Gas Check Valves
Last Updated: April 1, 2025
Description
Gas check valves are devices designed to allow gas to flow in one direction while preventing backflow. They are essential components in systems where maintaining a unidirectional flow of gas is critical to the operation and safety of the system.
Working Principle
Gas check valves operate based on a simple mechanism that allows gas to pass through in one direction while blocking any reverse flow. This is typically achieved using a ball or piston that moves to open the valve when gas flows in the desired direction and seals the valve when there is a reverse flow. The utility of gas check valves lies in their ability to prevent contamination, maintain pressure, and protect equipment from damage due to backflow.
Applications
Gas check valves are used in a variety of applications. For example, they are commonly found in hydraulic systems, fluid power systems, and chemical processing where they help regulate the flow of gases. A specific example includes their use in oil baths to regulate oil pressure, especially in environments with extreme temperatures ranging from -20° C to 200° C, where they help maintain system integrity without needing to meet stringent pressure specifications or being completely leak-proof .
Advantages over other Manufacturing - Vacuum Equipment
Gas check valves offer several advantages over other types of vacuum equipment. They can be used with a wide range of substances, including steam, air, gas, water, and vapor lines, and are suitable for high flow velocities. Additionally, they can be installed in lines with vertical flow and are available with renewable seat rings, which can enhance their longevity and reduce maintenance needs .
Limitations
One limitation of gas check valves is that they may not be suitable for applications requiring complete leak-proof performance or where stringent pressure specifications are necessary. Additionally, the materials used in the construction of the valve, such as O-rings, may not be suitable for all temperature ranges, which can limit their use in certain environments .
Considerations
When selecting gas check valves, several factors should be considered. Initial costs can vary depending on the materials and design specifications required for the application. Operating expenses may be influenced by the need for regular maintenance and potential replacement of components like seat rings. Durability is often dependent on the materials used and the operating environment, while accuracy in preventing backflow is crucial for maintaining system integrity. Replacement and maintenance costs should also be factored into the overall cost of ownership, as these can impact the long-term economic viability of using gas check valves in a system.
from Haskel International LLC
Ball Check Valves are ideal when leak tight shut-off is not necessary. This valve uses no elastomers and employs a metal to metal seal. The temperature range for the Ball Check Valves is -420 ° F to 1200 ° F (-251 ° C to 648 ° C). Available in pressures up to 100,000 PSI (6895 bar). [See More]
- Media: Air; Compressed Air; Gas
- Maximum Pressure: 15000.00 to 100000.00
from Radwell International
CHECK VALVE, 377 SERIES, 2 INCH SIZE,4.3 INCH TOP TO INLET CENTER, 150-600 PRESSURE CLASS 150 LBS PRESSURE CLASS, 8 INCH INLET TO OUTLET LENGTH, PTFE GASKET, RAISED FACE FLANGED END STYLE, CF8M MATERIAL. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
from Bonomi North America, Inc.
High Capacity Spring Loaded Stainless Steel Check Valve 250 WOG, FNPT Threaded w/ FKM Seat [See More]
- Media: Water; Gas
- Valve Size: 1.00
- Material Of Construction: Stainless Steel
- Connection Description: Threaded
from DFT Inc.
The DFT ® Model PDC ® Silent Check Valve is specially designed for use on the discharge side of reciprocating air or gas compressors. It includes a pulse damping chamber to maintain the disc in the open position during the momentary reductions in flow associated with each cycle of a... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Stainless Steel (optional feature); Steel (optional feature)
- Valve Type: BallDisk; Severe Service
- Valve Size: 2.00 to 12.00
from Shenzhen Jewellok Technology Co., Ltd.
Product Features. • Compact designed check valves. • EPDM O-ring are standard (option: Viton ® ). • Pressure rating: 206 bar. Typical Applications. • Designed for instrumentation panels and systems. Technical Data. Working pressure ： 206 bar. Cracking pressure... [See More]
- Media: Gas
- Maximum Pressure: 2987.78
from Radwell International
MAINTENANCE KIT, BOOSTER REGULATOR KIT, FOR VBA SERIES, THESE KITS INCLUDE; PISTON SEAL, GOVERNOR ASSEMBLY, CHECK VALVE, GASKET, ROD SEAL, MOUNTING SCREWS, COVER C' ASSEMBLY AND GREASE PACK.. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Air; Gas
from Bonomi North America, Inc.
High Capacity Spring Loaded Stainless Steel Check Valve 800 WOG, FNPT Threaded w/ P.T.F.E. Seat [See More]
- Media: Water; Gas; Steam
- Valve Size: 1.00
- Material Of Construction: Stainless Steel
- Connection Description: Threaded
from DFT Inc.
The DFT ® Excalibur ® Silent Check Valve is a spring-assisted, center guided, in-line, check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/temperature combinations. The valve consists of a body, gasket, seat, spring, disc with stem and guide... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Aluminum (optional feature); Brass / Bronze (optional feature); Stainless Steel (optional feature); Steel (optional feature); Exotic Metal (optional feature)
- Valve Type: BallDisk; Severe Service
- Valve Size: 2.00 to 24.00
from Radwell International
CHECK VALVE, FLOW CONTROL OF FLUIDS AND GASES. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
from Bonomi North America, Inc.
High Flow Rate Brass Spring Loaded Check Valve FNPT Threaded w/ NBR Seat [See More]
- Media: Water; Gas
- Valve Size: 1.00
- Material Of Construction: Brass / Bronze
- Connection Description: Threaded
from DFT Inc.
The DFT ® Model DLC ® is a corrosion resistant, dependable, versatile and economical spring assisted, in-line check valve for a wide range of applications. Whether the fluid is liquid, gas or steam, the DLC ® provides tight shut-off and protects other equipment in the system from water... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Steam
- Material Of Construction: Stainless Steel; Exotic Metal (optional feature)
- Valve Type: BallDisk; Severe Service
- Valve Size: 0.50 to 3.00
from Radwell International
DISCONTINUED BY MANUFACTURER, CHECK VALVE REPAIR KIT, O-RINGS, GASKETS. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
from Bonomi North America, Inc.
High Flow Rate Brass Spring Loaded Check Valve FNPT Threaded w/ Viton Seat [See More]
- Media: Water; Gas
- Valve Size: 0.38
- Material Of Construction: Brass / Bronze
- Connection Description: Threaded
from DFT Inc.
The FBC ™ is a compact, lightweight, insert wafer check valve that easily installs between two flanges. The in-line, spring assisted design prevents "water hammer" and "reverse flow". The FBC ™ contains all of the proven features of the Basic-Check ® valve developed by DFT ® over... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Steam
- Material Of Construction: Stainless Steel
- Valve Type: BallDisk; Umbrella; Severe Service
- Valve Size: 1.00 to 4.00
from Bonomi North America, Inc.
High Flow Rate Spring Loaded Lead Free Brass Check Valve FNPT Threaded w/ NBR Seat [See More]
- Media: Water; Gas
- Valve Size: 1.00
- Material Of Construction: Brass / Bronze
- Connection Description: Threaded
from DFT Inc.
The DFT ® Restrictor Check Valve (RCV) is a versatile, all-purpose, spring-assisted, in-line check valve for applications that require higher cracking pressures to open the check valve than those offered by other DFT ® check valves. Cracking pressures are available from 2 to 40 psi. Like the... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Stainless Steel
- Valve Type: BallDisk; Severe Service
- Valve Size: 0.25 to 2.50
from Bonomi North America, Inc.
High Flow Rate Spring Loaded Lead Free Brass Check Valve w/ EURO-PRESS Connections [See More]
- Media: Water; Gas
- Valve Size: 1.00
- Material Of Construction: Brass / Bronze
- Maximum Pressure: 175.00 to 400.00
from DFT Inc.
The DSV ® is an in-line spring-assisted check valve designed to prevent flow reversal in industries with strict cleanliness codes. To accommodate various piping arrangements, the DSV ® is available as a "Vertical" or "Horizontal" valve. The Horizontal valve is for Horizontal lines requiring... [See More]
- Media: Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Steam
- Material Of Construction: Stainless Steel
- Valve Type: BallDisk; Severe Service
- Valve Size: 0.50 to 3.00
from Bonomi North America, Inc.
High Flow Rate Spring Loaded Lead Free Brass Check Valve w/ Solder Ends [See More]
- Media: Water; Gas
- Valve Size: 1.00
- Material Of Construction: Brass / Bronze
- Maximum Pressure: 175.00 to 400.00
from DFT Inc.
The DSV ® is an in-line spring-assisted check valve designed to prevent flow reversal in industries with strict cleanliness codes. To accommodate various piping arrangements, the DSV ® is available as a "Vertical" or "Horizontal" valve. The Horizontal valve is for Horizontal lines requiring... [See More]
- Media: Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Steam
- Material Of Construction: Stainless Steel
- Valve Type: BallDisk; Severe Service
- Valve Size: 0.50 to 3.00
from DFT Inc.
The DFT ® Model GLC ® Silent Check Valve is a spring-assisted, center guided, in-line, flanged check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/temperature combinations. The valve consists of a body, seat, spring, disc with stem and guide... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Aluminum (optional feature); Brass / Bronze (optional feature); Cast Iron (optional feature); Stainless Steel (optional feature); Steel (optional feature); Exotic Metal (optional feature)
- Valve Type: BallDisk; Severe Service
- Valve Size: 1.00 to 24.00
from DFT Inc.
The DFT ® Basic-Check ® valve is a versatile all-purpose, spring-assisted, in-line check valve that provides reliable, low maintenance service for a wide range of liquids and gases at various pressure/temperature combinations. The valve consists of a guard cage, spring, valve disc, retaining... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Stainless Steel
- Valve Type: BallDisk; Severe Service
- Valve Size: 0.25 to 2.50
from DFT Inc.
The DFT ® Model SCV ® is a corrosion resistant, dependable, versatile and economical spring-assisted, in-line check valve for a wide range of applications. Whether the fluid is liquid, gas or steam, the SCV ® provides tight shut-off and protects other equipment in the system from water... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Steam
- Material Of Construction: Stainless Steel
- Valve Type: BallDisk; Severe Service
- Valve Size: 0.50 to 3.00
from DFT Inc.
DFT ® Vacuum Breakers provide effective protection against collapse of pressure vessels, tanks and rolls. They prevent condensate "back-up" when equipment is shut down or inlet steam is reduced by modulating control valves. In piping systems, DFT ® Vacuum Breakers are used to break siphons,... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Stainless Steel
- Valve Type: BallDisk; Severe Service
- Valve Size: 1.00 to 4.00
from DFT Inc.
The ALC ® is an in-line, spring assisted, single guided "wafer" check valve designed to prevent "water hammer" and "reverse" flow. The lightweight compact design fits between mating flanges and meets API 594 Face-to-Face dimensions. The ALC ® is an easy to maintain check valve for... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Steam
- Material Of Construction: Stainless Steel (optional feature); Steel (optional feature); Exotic Metal (optional feature)
- Valve Type: BallDisk; Umbrella; Severe Service
- Valve Size: 10.00 to 24.00
from DFT Inc.
The DFT ® Model WLC Wafer style Silent Check Valve is a lightweight, spring-assisted, in-line check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/temperature combinations. The joint between the seat ring and body is sealed by the flange gasket upon... [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Cast Iron (optional feature); Stainless Steel (optional feature); Steel (optional feature)
- Valve Type: BallDisk; Umbrella; Severe Service
- Valve Size: 1.00 to 10.00
from KSB AG
Design. Cast swing check valve to BS 1868 with bolted cover. Internal hinge pin mounted design. Bigger sizes with anti-slam/dash pot arrangement (optional). With graphite gasket. Seating surfaces 13% Cr steel/stellite hard-faced. Pressure/temperature ratings to ASME B16.34. Flanged/butt weld ends to... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Stainless Steel; Steel
- Valve Type: Swing
- Valve Size: 1.97 to 23.62
from Cooper Valves
COOPER ® Valves full port lift check valves are an excellent choice for applications where faster closing speeds are required to prevent surges. Cooper lift checks are built with an Inconel X-750 spring for extra strength and corrosion resistance. Cooper lift checks have a low differential... [See More]
- Media: Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Stainless Steel; Exotic Metal; Nickel Alloy, Monel, Hastelloy, Incoloy, Inconel,Titanium Alloy, Zirconium Alloy
- Valve Type: Lift Check; Severe Service
- Valve Size: 0.50 to 3.00
from ESAB Welding and Cutting Products
Features. Wide assortment of NPTF Thread Check Valves. For oxygen and fuel gas service [See More]
- Media: Gas; Oxygen, Fuel Gas
- Connection Description: Threaded; NPTF-Poppet, NPTF-Swing
- Valve Size: 0.25 to 1.50
from Watson McDaniel Company
The model WSSCV is an all stainless steel in-line check valve for steam, gas, or liquid service. It provides tight shut-off, minimizes water hammer and also stops recycling of pumps by preventing back flow of liquid. Used in the petrochemical, pulp and paper, textile and the food & beverage... [See More]
- Media: Water; Gas; Steam; Liquids
- Material Of Construction: Stainless Steel
- Valve Type: Poppet
- Valve Size: 0.50
from Curtiss-Wright, Valve Group
Curtis Wright provides a variety of industrial grade check valves that meet the harsh environments suitable for applications such as power and oil, petrochemical, hydrocarbon service, seawater cooling systems, offshore applications. Curtiss-Wright check valves are supplied through their Phonix,... [See More]
- Media: Water; Hot Water; Gas; High Purity; Specialty Corrosive; Steam; non aggressive liquids, gases and vapours
- Material Of Construction: Stainless Steel; Steel; Exotic Metal
- Valve Type: BallDisk; Swing; Severe Service
- Valve Size: 0.50 to 24.00
from Xiamen Landee Industries Co., Ltd.
Key Specifications/Special Features: Working pressure: PN10; PN16. Body materials: cast iron, ductile iron, aluminum bronze, stainless steel and carbon steel. Applicable temperature: from -40 to +230 degrees C. Size range: from 2 to 40 inches diameter (DN25 to DN1000mm). Face to face according to... [See More]
- Media: Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; LP Gas; Natural Gas; Sour Gas
- Material Of Construction: Aluminum; Brass / Bronze; Cast Iron; Ductile Iron; Stainless Steel; Steel; Carbon Steel
- Valve Type: Swing
- Valve Size: 2.00 to 40.00
from CoorsTek
CoorsTek provides industrial-grade valves and valve components that excel in even the most punishing conditions. Made to outperform conventional plastic, metal, carbide-coated, and diffusion alloy materials in corrosive, high-temperature, and high-pressure applications our components are made-to-fit... [See More]
- Media: Gas; Specialty Corrosive
- Material Of Construction: Ceramic
- Valve Type: BallDisk
from Check-All Valve Mfg. Co.
The Bushing Valve is a check valve with a standard bushing housing. The valve is adaptable to many types of service applications. It has very little restriction and produces a low pressure drop. It can be used quite effectively in systems where flow and pressure drop are critical by the use of a... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 0.50
from Danfoss A/S
SCA-X are check and stop valves with built-in stop valve function. SCA-X valves are available in angleway versions. The valves are designed to open at very low differential pressures, allow favourable flow conditions and are easy to disassemble for inspection and service. SCA-X valves are equipped... [See More]
- Media: Gas; Refrigerents, Ammonia, Propane, Butane, Iso-Butane and Ethane
- Valve Size: 0.59 to 4.92
- Material Of Construction: Copper
- Connection Description: Socket Weld
from KITZ Corporation of America
KITZ offers a wide selection of cast steel valves with a variety of options appropriate for everything from small/large bore lines to low/high-pressure environments [See More]
- Media: Gas
- Connection Description: BoltFlange
- Material Of Construction: Steel
- Agency: API; ASME
from Liquid Controls Group; a Unit of IDEX Corporation
Back Check Valves. Designed with a soft seat to prevent reverse flow and eliminate counter advancement when PTO is engaged. Includes built-in pressure relied to keep the meter, downstream piping and delivery hose packed to a set pressure. Full port design assures maximum system flow rate. [See More]
- Media: Gas; Gasoline / Diesel Fuel
- Maximum Pressure: ? to 350.00
- Material Of Construction: Aluminum
from AVK International A/S
Swing Check Valves. Flanged Non Return Valve to EN12266. Cast Iron or Ductile Iron with or without Stainless Steel internals. Sizes range from DN150 to DN300. [See More]
- Media: Gas; LP Gas; Natural Gas
- Valve Size: 6.00 to 20.00
- Material Of Construction: Cast Iron (optional feature); Ductile Iron
- Connection Description: BoltFlange
from Sharpe Valves
Outside screw/yoke, bolted bonnet, integral seats, flanged ends [See More]
- Media: Water; Cold Water ; Potable Water; Wastewater; Gas; Gasoline / Diesel Fuel
- Material Of Construction: Stainless Steel; Steel
- Valve Type: Swing
- Valve Size: 0.50
from WEH Technologies Inc.
CNG Check valve for cars and fueling stations. With the type TVR1 CNG WEH ® offers an advanced, high performance check valve for use with natural gas. The check valve system is designed to minimize the effect of dirt particles on the sealing components within the unit. The WEH ® TVR1 CNG... [See More]
- Media: Gas; Natural Gas
- Valve Size: 0.24 to 0.47
- Material Of Construction: Stainless Steel
- Connection Description: Threaded (optional feature); Tube Fitting (optional feature)
from Triangle Pump Components, Inc.
Among our diverse product offerings at Triangle Pump Components, Inc. is the Abrasion Resistant (AR) Valve, designed for applications enduring some of the heaviest wear. This valve, available in two different varieties, is ideally suited for use in pumping environments containing abrasives or small... [See More]
- Media: Gas
- Material Of Construction: Stainless Steel
- Valve Type: Lift Check
- Maximum Pressure: 15000.00
from National Oilwell Varco
Valves. NOV's Valve Division manufactures top of the line Reset Relief Valves, Shear Relief Valves, Float Valves, and Gate Valves for the oil and gas industry. These product lines protect drilling equipment from pressure spikes and backflow, which can lead to premature failure of equipment if not... [See More]
- Media: Gas
- Valve Type: Lift Check
from Spirax-Sarco
The DCV41 is an austenitic stainless steel disc check valve available with either screwed or socket weld end connections. Its function is to prevent reverse flow on a wide variety of fluids for applications in process lines, hot water systems, steam and condensate systems. [See More]
- Media: Air; Water; Gas; Steam
- Material Of Construction: Stainless Steel
- Valve Type: BallDisk
- Valve Size: 0.50 to 1.00
from Mueller Steam Specialty
Recommended for use in higher temperature or pressure applications. [See More]
- Media: Hydraulic (optional feature); Air; Compressed Air (optional feature); Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); High Temp and Pressure Applications
- Material Of Construction: Carbon Steel
- Valve Type: BallDisk
- Valve Size: 2.00 to 4.00
from Safran Electrical & Power
Techspace Aero is the European leader in the field of regulation valves for launcher engines and stages. The company's engineering skills cover all fluids used in propulsion systems, from extreme cryogenics to combustion gases (nitrogen, helium, hydrogen, oxygen, hydrazine, nitrogen peroxide,... [See More]
- Media: Gas
from Hy-Lok USA, Inc.
Compressed Natural Gas Check Valve. Hy-Lok's 700H Series Check Valves are designed for flow control CNG. Tested and certified for this application per AGA/CGA NGV 3.1. [See More]
- Media: Gas; Natural Gas
- Valve Size: 0.25 to 0.75
from DK-LOK U.S.A.
Up to 3000psig (206bar). Up to 190 ℃ (375 ℉). ss316, Brass. DK-LOK OD1/8 - 1 inch. Pipe thread 1/8 - 1 inch [See More]
- Media: Air; Compressed Air; Water; Gas
- Material Of Construction: Brass / Bronze; Stainless Steel; Viton, NBR, (optional EPDM, Kalrez); PTFE (optional feature); Rubber
- Valve Type: Lift Check
- Valve Size: 0.19
from Chemac Inc./Uraca/Uhde HPT/Gather/BHDT
High Pressure Piping, Valves and Fittings. Based on the High-pressure valves and fittings to IG standards for pressure ratings of 325 and 700 bar, Chemac Inc offers these for pressure ratings of 500, 1600, 2500, 3200, 3600 and 4000 bar in similar construction with lens-type gaskets. Valves with... [See More]
- Media: Air; Water; Gas
from MAXPRO Technologies, Inc.
MAXIMATOR ball check valves prevent reverse flow where bubble tight shutoff is not mandatory. These check valves are designed with a ball cradled floating poppet to assure positive inline seating. This poppet design allows full flow around the ball to minimize pressure drop. Check valves are rated... [See More]
- Media: Air; Compressed Air; Gas
- Valve Size: 0.25
- Material Of Construction: Stainless Steel
- Connection Description: Tube Fitting
from Armstrong International
The primary purpose of an electrically operated solenoid valve is to automatically control the flow of fluids, liquids and gasses. Armstrong ’s SFA series solenoid valves may be applied on a variety of applications. These flanged, industrial refrigeration only duty solenoid valves are simple... [See More]
- Media: Gas; Fluids, Liquid, Refrigerants
- Maximum Pressure: 300.00
- Connection Description: Flange
from NIBCO INC.
Bronze Check Valves for use in commercial and industrial applications. Typical services include; hot and cold water, HVAC, steam, compressed air, gas and other general utility services. 125 psi/8.6 bar saturated steam to 353 °F/178 °C, 200 psi/13.8 bar non-shock cold working pressure,... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; LP Gas; Natural Gas; Steam
- Material Of Construction: Brass / Bronze
- Valve Type: BallDisk; Swing
- Valve Size: 0.25 to 4.00
from Harwood Engineering Company
Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. These valves allow fluids to flow in only one direction and require a minimum pressure to open. Features. Service for liquids and gases at pressures up to 200,000... [See More]
- Media: Air; Gas
- Material Of Construction: Stainless Steel
- Valve Type: BallDisk
- Connection Description: Inlet: 4L, Outlet: 4L
from Valcor Engineering Corporation
Description. Extreme reliability is inherent due to rugged design, simplicity of operation, and a minimum number of moving parts. Isolation standoffs prevent excessive heat transfer to the solenoid operator. Internal parts are contoured to retard buildup of contamination and sludge. Compact, light... [See More]
- Media: Water; Gas
- Connection Description: Threaded
- Valve Size: 0.38 to 3.00
- Maximum Pressure: 2500.00
from KSB AG
Design. Cast swing check valve to ASME B16.34. Pressure seal cover.Internal hinge pin mounted design. Stellite hard-faced seating surfaces, graphite gasket. Pressure/temperature ratings to ASME B16.34. Butt weldends to ASME B16.25 standard. Face-to-face length to ASME B16.10, valve testing in... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Swing
- Valve Size: 1.97 to 15.75
from Cooper Valves
COOPER ® Valves cast check valves have a simple yet reliable design that allows them to perform with low pressure drop and excellent seat tightness. The Cooper cast check valve is also available for cryogenic service with an extended bonnet. Cast check valves larger than 12 ” are available... [See More]
- Media: Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Stainless Steel; Exotic Metal; Nickel Alloy, Monel, Hastelloy, Incoloy, Inconel,Titanium Alloy, Zirconium Alloy
- Valve Type: Swing; Severe Service
- Valve Size: 0.50 to 24.00
from Xiamen Landee Industries Co., Ltd.
Swing Check Valve with Cast Iron, Ductile Iron, Aluminum Bronze, and Stainless Steel Materials. Model Number:LD 016-WCK4. Key Specifications/Special Features: Working pressure: PN10, PN16, 125LBS. Body materials: cast iron, ductile iron, aluminum bronze, stainless steel, and carbon steel. Applicable... [See More]
- Media: Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; LP Gas; Natural Gas; Sour Gas
- Material Of Construction: Aluminum; Brass / Bronze; Cast Iron; Ductile Iron; Stainless Steel; Steel
- Valve Type: Swing
- Valve Size: 2.00 to 40.00
from Check-All Valve Mfg. Co.
The Connector Valve is a check valve with a hex nipple or connector housing. It is designed to be used in installations where check valves with male pipe threads are required. The Connector Valve is adaptable for use as a check valve, vacuum breaker, or low pressure relief valve. Two valves used in... [See More]
- Media: Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 0.50
from Danfoss A/S
SCA-X SS are check and stop valves in stainless steel with a built-in stop valve function. SCA-X SS are available in angleway versions. The valves are designed to open at very low differential pressures, allow favourable flow conditions and are easy to disassemble for inspection and service. SCA-X... [See More]
- Media: Gas; Refrigerents, Ammonia, Propane, Butane, Iso-Butane and Ethane
- Valve Size: 0.59 to 1.57
- Material Of Construction: Copper
- Connection Description: Socket Weld
from Sharpe Valves
Class 800, ASTM A182/F316L, 316L body/bonnet, threaded or socket weld [See More]
- Media: Water; Cold Water ; Potable Water; Wastewater; Gas; Gasoline / Diesel Fuel
- Material Of Construction: Stainless Steel
- Valve Type: Wafer
- Valve Size: 0.50
from WEH Technologies Inc.
Check valve for hydrogen cars. With this product WEH offers an advanced, high performance check valve for use with gaseous hydrogen (CGH. 2). The check valve system is designed to minimise the effect that dirt particles have on the sealing components within the unit. The WEH TVR1 H2 check valve is... [See More]
- Media: Gas; High Purity
- Valve Size: 0.24 to 0.39
- Material Of Construction: Steel
- Connection Description: Threaded (optional feature); Tube Fitting (optional feature)
from Triangle Pump Components, Inc.
Among our diverse pump valve component line at Triangle Pump Components, we offer a Plate Valve model. The plate pump valve is a double-sprung, stem guided plate style valve available with a Delrin ®, Stainless Steel, or titanium plate. This valve features a one-piece retainer that can house... [See More]
- Media: Gas
- Material Of Construction: Stainless Steel
- Valve Type: Lift Check
- Maximum Pressure: 15000.00
from Spirax-Sarco
The Spirax Sarco vacuum breaker range will protect your plant and process equipment against vacuum, and at the same time allow condensate to drain effectively from pipework and storage vessels. [See More]
- Media: Air; Water; Gas; Steam
- Material Of Construction: Brass / Bronze
- Valve Type: BallDisk
- Valve Size: 0.12 to 0.50
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications. [See More]
- Media: Hydraulic (optional feature); Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Brass / Bronze
- Valve Type: Wafer
- Valve Size: 1.00 to 10.00
from DK-LOK U.S.A.
Up to 6000 psig (413bar). Up to 204 ℃ (400 ℉). ss316. O-ring seal blow-out proof design. DK-LOK OD 1/8 - OD1 inch. Pipe thread 1/8 - 1" [See More]
- Media: Air; Compressed Air; Water; Gas; Sour Gas (optional feature)
- Material Of Construction: Brass / Bronze; Stainless Steel; Viton, NBR, (optional EPDM, Kalrez); PTFE (optional feature); Rubber
- Valve Type: Lift Check
- Connection Description: Compression; 1/8" Dk-Lok
from MAXPRO Technologies, Inc.
MAXIMATOR o-ring check valves provide high quality directional flow control and tight shutoff for liquids and gases. All check valves are supplied with glands and collars. These check valves are not to be used as a relief device. Click on the underlined item number below to request a quote. [See More]
- Media: Air; Compressed Air; Gas
- Valve Size: 0.25
- Material Of Construction: Stainless Steel
- Connection Description: Tube Fitting
from KSB AG
Design. Die-forged piston type lift valves as per API 602 (800/1500)/ASME B16.34 (2500). Bolted cover (800) or welded cover (1500/2500). Integral stellite hard-faced body seat, disc seating face 13% Cr steel/stellite hard-faced. Graphite gasket. Pressure/temperature ratings to ASME B16.34. Line... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Wafer
- Valve Size: 0.59 to 1.97
from Cooper Valves
Extreme temperatures and pressures require extreme precision and durability —just what Cooper's cryogenic full port check valves deliver. They're available in a variety of sizes ranging from 1/2" to 12", a range of ASME pressure classes, with bolted cover and metal or renewable disks. Options... [See More]
- Media: Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Stainless Steel
- Valve Type: Swing; Severe Service
- Valve Size: 0.50 to 12.00
from Xiamen Landee Industries Co., Ltd.
Cast Steel Check Valve Delivered in 30 Days. Model Number: LD-003-CK. Key Specifications/Special Features: Manufacturing standards: API, ANSI, BS, DIN, JIS. Size range: from 1/2 inch to 32 inch (DN15mm - DN800mm). Pressure: from ANSI class 150 to 2500 (PN1.6-42MPa). Operating temperature: from -196... [See More]
- Media: Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; LP Gas; Natural Gas; Sour Gas
- Material Of Construction: Stainless Steel; Steel; Carbon Steel
- Valve Type: Swing
- Valve Size: 0.50 to 32.00
from Check-All Valve Mfg. Co.
The CAV series of valves are not catalog items but rather are custom designed and tailored to meet customer specific connections or valve configurations. If you have a check valve application where our standard catalog items do not quite match what you are looking for, contact our sales department... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Aluminum; Brass / Bronze; Stainless Steel (optional feature); Steel (optional feature); Exotic Metal; Titanium, Monel
- Valve Type: Cartridge (optional feature); Lift Check; Poppet; Back Flow
- Connection Description: Threaded (optional feature); Compression (optional feature); BoltFlange (optional feature); Clamp Flange (optional feature); Union (optional feature); Tube Fitting (optional feature); Butt Weld (optional feature); Socket Weld (optional feature); Face Seal (optional feature)
from Danfoss A/S
CHV-X check valves are available in angleway versions. The valves are designed to open at very low differential pressures, allow favourable flow conditions and are easy to disassemble for inspection and service. Laser cut V-ports provide excellent opening characteristics (CHV-X 50-125). The valve... [See More]
- Media: Gas; Refrigerents, Ammonia, Propane
- Valve Size: 1.26 to 4.92
- Material Of Construction: Copper
- Connection Description: Socket Weld
from Sharpe Valves
200 psi, WOG at 350 °F, screwed cap, integral seats [See More]
- Media: Water; Cold Water ; Potable Water; Wastewater; Gas; Gasoline / Diesel Fuel
- Material Of Construction: Steel
- Valve Type: Swing
- Valve Size: 0.50
from WEH Technologies Inc.
High-Performance Check Valve for hydrogen for use with cars (DN 4 mm). With this product WEH offers a high performance check valve for use with hydrogen cars of the latest generation. The check valve system is designed to minimize the effect that dirt particles have on the sealing components within... [See More]
- Media: Gas; High Purity
- Valve Size: 0.24 to 0.39
- Material Of Construction: Steel
- Connection Description: Threaded; Tube Fitting
from Triangle Pump Components, Inc.
Triangle Pump Components, Inc. is proud to offer the Durabla V7 Pump Valve as part of our diverse product selection. This specific model from the Durabla family is popularly used on steam pump applications. The V7 ’s seats are furnished in one of three ways: threaded for screw fit, tapered for... [See More]
- Media: Gas; Steam
- Valve Size: 1.50 to 7.75
- Valve Type: Lift Check
- Connection Description: Threaded; Compression
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications. [See More]
- Media: Hydraulic (optional feature); Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Brass / Bronze
- Valve Type: Wafer
- Valve Size: 1.00 to 10.00
from DK-LOK U.S.A.
Up to 6000 psig (413bar). Up to 204 ℃ (400 ℉). ss316. O-ring seal blow-out proof design. DK-LOK OD 1/8 - OD1 inch. Pipe thread 1/8 - 1" [See More]
- Media: Air; Compressed Air; Water; Gas; Sour Gas (optional feature)
- Material Of Construction: Brass / Bronze; Stainless Steel; Viton, NBR, (optional EPDM, Kalrez); PTFE (optional feature); Rubber
- Valve Type: Lift Check
- Connection Description: Compression; 1/2" Dk-Lok
from MAXPRO Technologies, Inc.
MAXIMATOR ball check valves prevent reverse flow where bubble tight shutoff is not mandatory. These check valves are designed with a ball cradled floating poppet to assure positive inline seating. This poppet design allows full flow around the ball to minimize pressure drop. Check valves are rated... [See More]
- Media: Air; Compressed Air; Gas
- Connection Description: Tube Fitting
- Material Of Construction: Stainless Steel
- Maximum Pressure: 21000.00
from KSB AG
Design. Dual-plated wafer type check valve, single-piece body. Metal or elastomer sealing. Cast iron, ductile iron, cast steel or stainless steel body; maintenance free. PN 10 / 16 / 25 / 40, Class 150, Class 300. EN, ANSI and JIS flange connections available. Overview of technical data. Body... [See More]
- Media: Water; Hot Water; Cold Water ; Gas
- Material Of Construction: Cast Iron (optional feature); Stainless Steel (optional feature); Steel (optional feature)
- Valve Type: Wafer
- Valve Size: 1.97 to 23.62
from Cooper Valves
Precise response. Faster closing. Excellent seat tightness. Those are the strong points of COOPER ® Valves forged check valves. [See More]
- Media: Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Stainless Steel; Exotic Metal; Nickel Alloy, Monel, Hastelloy, Incoloy, Inconel,Titanium Alloy, Zirconium Alloy
- Valve Type: Lift Check; Severe Service
- Valve Size: 0.50 to 2.00
from Xiamen Landee Industries Co., Ltd.
Swing Check Valves, Pressure from ANSI Class 150 to 2500 (PN1.6-42MPa). Model Number:LD-003-CK2. Key Specifications/Special Features: Pressure: from ANSI class 150 to 2500 (PN1.6-42MPa). Manufacturing standards: API, ANSI, BS, DIN, JIS. Size range: from 1/2 inch to 32 inch (DN15mm - DN800mm). [See More]
- Media: Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; LP Gas; Natural Gas; Sour Gas
- Material Of Construction: Aluminum; Brass / Bronze; Cast Iron; Ductile Iron; Stainless Steel; Steel; Carbon Steel
- Valve Type: Swing
- Valve Size: 0.50 to 32.00
from Check-All Valve Mfg. Co.
Flange Insert valves are the ultimate check valves in flanged systems. They provide the simplest most economical way to install check valves in a piping system, the valve body automatically positions the valve and holds it in place while bolts are being installed and tightened. All that is required... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; FEP Encapsulator; PVC; PTFE
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 0.50
from Danfoss A/S
NRV and NRVH can be used in liquid, suction and hot gas lines in refrigeration and air conditioning plants with fluorinated refrigerants. NRV and NRVH can be supplied with flare and solder connections. They are also available with oversize solder connections providing flexibility in the use of check... [See More]
- Media: Gas; Fluorinated Refrigerants
- Valve Size: 0.88 to 1.62
- Material Of Construction: Copper
- Connection Description: Socket Weld
from WEH Technologies Inc.
High-Performance Check Valve for buses and trucks (DN 12 mm). Type TVR5 CNG is the largest of our check valves. It is most efficient and developed specifically for CNG buses and trucks. The check valve system is designed to minimize the effect of dirt particles on the sealing components within the... [See More]
- Media: Gas; Natural Gas
- Valve Size: 0.47 to 0.63
- Material Of Construction: Stainless Steel
- Connection Description: Threaded (optional feature); Tube Fitting (optional feature)
from Triangle Pump Components, Inc.
One of our many versatile valve offerings, the Durabla V7F Pump Valve is a variation of the Durabla family. It incorporates all of the basic features of the V7H, such as durability and a long operational life cycle, as well as a few additional design elements to accommodate higher volumes of liquid... [See More]
- Media: Gas
- Valve Type: Lift Check
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications. [See More]
- Media: Hydraulic (optional feature); Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Carbon Steel
- Valve Type: BallDisk
- Valve Size: 2.00 to 30.00
from DK-LOK U.S.A.
Up to 3000psig (206bar). Up to 190 ℃ (375 ℉). ss316, Brass. O-ring seal blow-out proof design. Pipe thread 1/4 - 1/2 inch [See More]
- Media: Air; Compressed Air; Water; Gas
- Material Of Construction: Brass / Bronze; Stainless Steel; Viton, NBR, (optional EPDM, Kalrez); PTFE (optional feature); Rubber
- Valve Type: Lift Check
- Connection Description: Threaded; 1/4" Male NPT
from MAXPRO Technologies, Inc.
MAXIMATOR o-ring check valves provide high quality directional flow control and tight shutoff for liquids and gases. All check valves are supplied with glands and collars. These check valves are not to be used as a relief device. Materials. Body, cover, poppet, cover gland: 316 series stainless... [See More]
- Media: Air; Compressed Air; Gas
- Connection Description: Tube Fitting
- Material Of Construction: Stainless Steel
- Maximum Pressure: 21000.00
from KSB AG
Design. Flanged or weld end non-return valve, check disc with closing spring; seats made of wear and corrosion resistant 17% Cr steel or stellite. Applications. In industrial plants, power stations, process engineering and shipbuilding. For water, steam, gas, oil and other non-aggressive fluids. [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Wafer
- Valve Size: 0.39 to 7.87
from Cooper Valves
Simple. Hard-working. Precise. Proven. COOPER ® Valves forged check valves have a simple yet reliable design that allows them to perform with low pressure drop and excellent seat tightness. [See More]
- Media: Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Material Of Construction: Stainless Steel; Exotic Metal; Nickel Alloy, Monel, Hastelloy, Incoloy, Inconel,Titanium Alloy, Zirconium Alloy
- Valve Type: Swing; Severe Service
- Valve Size: 0.50 to 2.00
from Xiamen Landee Industries Co., Ltd.
Swing Check Valve, Flange Drilling According to ANSI125/150, DIN2501 PN10/PN16, and AS2129 Table E. Model Number:LD 016-WCK1. Key Specifications/Special Features: Key Specifications/Special Features: Working pressure: PN10, PN16, 125lb. Body materials: cast iron, ductile iron, aluminum bronze,... [See More]
- Media: Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; LP Gas; Natural Gas; Sour Gas
- Material Of Construction: Aluminum; Brass / Bronze; Cast Iron; Ductile Iron; Stainless Steel; Steel; Carbon Steel
- Valve Type: Swing
- Valve Size: 2.00 to 40.00
from Check-All Valve Mfg. Co.
The Check-All Flanged & Drilled check valve is a one-piece cast body valve with ANSI/ASME B16.5 Class 150 flanged ends. The HVFD series valve is used when higher flow rates and lower pressure drops are required. The valve is available in sizes 1 through 10 inches and standard materials of 316... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Brass / Bronze; Stainless Steel; Steel
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 1.00
from Danfoss A/S
Check valve type NRVA can be used in liquid, suction and hot gas lines in refrigeration and air conditioning plants with ammonia. NRVA can also be used in refrigeration systems with fluorinated refrigerants.When NRVA is used in liquid lines where cold thick oil or impurities may be present, it is... [See More]
- Media: Gas; Florinated Refrigerents, Ammonia
- Valve Size: 0.50 to 2.50
- Material Of Construction: Copper
- Connection Description: Butt Weld
from WEH Technologies Inc.
Hydrogen check valve for buses and trucks (DN 12 mm). WEH TVR5 H2 is the largest of our check valves. It is most efficient and developed specifically for hydrogen buses and trucks. The check valve system is designed to minimise the effect that dirt particles have on the sealing components within the... [See More]
- Media: Gas; High Purity
- Valve Size: 0.47 to 0.63
- Material Of Construction: Steel
- Connection Description: Threaded (optional feature); Tube Fitting (optional feature)
from Triangle Pump Components, Inc.
Triangle Pump Components, Inc. is proud to offer the industry ’s leading pump valve, the Durabla V7H. Meticulously designed to provide superior service and a long operating life, the V7H is the most effective valve for Low Net Positive Suction Head (NPSH) applications, when plunger pumps are... [See More]
- Media: Gas
- Valve Size: 1.50 to 6.00
- Valve Type: Lift Check
- Maximum Pressure: 6500.00
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications. [See More]
- Media: Hydraulic (optional feature); Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Carbon Steel
- Valve Type: Wafer
- Valve Size: 1.00 to 10.00
from KSB AG
Design. Flanged or weld end non-return valve, check disc with closing spring; seats made of wear and corrosion resistant 17% Cr steel or stellite. Applications. In industrial plants, power stations, process engineering and shipbuilding. For water, steam, gas, oil and other non-aggressive fluids. [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Wafer
- Valve Size: 2.56 to 7.87
from Xiamen Landee Industries Co., Ltd.
Wafer Check Valves with Stainless Steel CF8, API, ANSI, BS and DIN Manufacturing Standards. Model Number: LD 003-CK1. Key Specifications/Special Features: Body materials: carbon steel, alloy steel and stainless steel. Manufacturing standards: API, ANSI, BS and DIN. Sizes range: from 2 to 48-inch... [See More]
- Media: Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; LP Gas; Natural Gas; Sour Gas
- Material Of Construction: Stainless Steel; Steel; Carbon Steel
- Valve Type: Wafer
- Valve Size: 2.00 to 40.00
from Check-All Valve Mfg. Co.
The Check-All Flanged & Drilled - PTFE Lined check valve is a one-piece body valve with ANSI/ASME flanged ends. The valve has a solid one-piece PTFE liner, which covers the flange faces out to the raised face diameter. All wetted surfaces are fluoropolymer (PTFE/FEP/PFA) including the FEP... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Steel; FEP Encapsulator
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 1.00
from Danfoss A/S
BCV check valves are installed in the liquid line of heat pump air conditioner to prevent counter flow at change over cycles from heating to cooling or vice versa. For prevention of reverse flow of high pressure gas when compressors stops. For use with Fluorinated Refrigerants, air or oil. BCV can... [See More]
- Media: Gas; Fluorinated Refrigerants
- Valve Size: 0.26 to 0.63
- Material Of Construction: Copper
- Connection Description: Socket Weld
from WEH Technologies Inc.
High-performance check valves for use with liquid and gaseous media. For many years we have been a preferred supplier for a wide range of industries with our check valve range. The WEH check valves are especially designed for both liquid and gaseous media. The check valve system is designed to... [See More]
- Media: Air; Gas
- Valve Size: 0.16 to 1.97
- Material Of Construction: Stainless Steel
- Connection Description: Threaded
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications. [See More]
- Media: Hydraulic (optional feature); Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Brass / Bronze
- Valve Type: BallDisk
- Valve Size: 2.00 to 30.00
from KSB AG
Design. Flanged or weld end non-return valve, check disc with closing spring; seats made of wear and corrosion resistant Cr steel or CrNi steel. Applications. In industrial plants, building services, power stations andshipbuilding. For water, steam, gas and other non-aggressive fluids. Other fluids... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Wafer
- Valve Size: 0.39 to 11.81
from Xiamen Landee Industries Co., Ltd.
API, ANSI, BS, DIN-Standard Wafer Check Valves. Model Number: LD 016-WCK. Key Specifications/Special Features: Manufacturing standards: API, ANSI, BS, DIN. Sizes range: from 1" diameter to 24" diameter (DN25mm - DN600mm). Pressure: from ANSI class 150 to 2500 (PN1.6 - 42MPa). Body materials: carbon... [See More]
- Media: Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; LP Gas; Natural Gas; Sour Gas
- Material Of Construction: Stainless Steel; Steel; Carbon Steel
- Valve Type: Wafer
- Valve Size: 1.00 to 24.00
from Check-All Valve Mfg. Co.
The Lined Pipe Insert valve is designed to mate between two flanges on most lined pipe systems. It provides the simplest most economical way to install a check valve in a lined piping system. No gaskets are required, just spread the flanges, center the valve and bolt the flanges together. Lined Pipe... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Exotic Metal; FEP Encapsulator; PTFE
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 1.00
from Danfoss A/S
CHV-X SS stainless steel check valves are available in angleway versions. The valves are designed to open at very low differential pressures, allow favourable flow conditions and are easy to disassemble for inspection and service. The valve cone has a built-in flexibility to ensure a precise and... [See More]
- Media: Gas; Refrigerents, Ammonia, Propane
- Valve Size: 0.59 to 1.57
- Material Of Construction: Copper
- Connection Description: Socket Weld
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge. [See More]
- Media: Hydraulic (optional feature); Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Cast Iron
- Valve Type: BallDisk
- Valve Size: 2.00 to 30.00
from KSB AG
Flanged or weld end non-return valve, check disc with closing spring; seats made of wear and corrosion resistant stellite. Applications. In industrial plants, power stations, process engineering and shipbuilding. For water, steam, gas, oil and other non-aggressive fluids. Other fluids on request. [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Wafer
- Valve Size: 0.39 to 1.97
from Check-All Valve Mfg. Co.
The Check-All Mini-Check is a three piece constructed check valve. The valve is designed for minimum pressure drops. The three piece construction permits many combinations of end fittings, which makes the valve adaptable for nearly every application. The Mini-Check is available with 1/8, 1/4, and... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 0.12
from Danfoss A/S
Check valve type NRVS is for use in liquid line applications. NRVS is designed to be mounted directly to PM or solenoid valves EVRA/EVRAT. Refrigerants: Applicable to HCFC, HFC and R717 (Ammonia). Flammable hydrocarbons are not recommended. The valve is only recommended for use in closed circuits. [See More]
- Media: Gas; Refrigerents, Ammonia
- Connection Description: Insertion
- Material Of Construction: Copper
- Maximum Pressure: 406.11
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Elastomer seats provide bubble-tight shutoff. [See More]
- Media: Hydraulic (optional feature); Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Cast Iron
- Valve Type: Wafer
- Valve Size: 2.00 to 54.00
from KSB AG
Design. Flanged or weld end swing check valve in pressure seal design, with internal hinge pin forged / welded body; seats made of wear and corrosion resistant 17 % Cr steel or stellite. Applications. In industrial plants, power stations, process engineering and shipbuilding. For water, steam, gas,... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Swing
- Valve Size: 3.15 to 11.81
from Check-All Valve Mfg. Co.
The Sanitary Cartridge Valve is a 316 stainless steel check valve for use in new or existing sanitary systems. The SCV design seals on the ID of sanitary ferrules with replaceable food grade seals (Standard is FDA EPDM). The valves fit the Alfa Laval Inc. Bevel Seat and Tri-Clamp ® fittings, the... [See More]
- Media: Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Stainless Steel
- Valve Type: Cartridge; Lift Check; Poppet; Back Flow
- Valve Size: 0.75
from Mueller Steam Specialty
Can be used in a variety of applications including: chilled and hot water systems, refrigeration, plumbing, air conditioning, gas and liquid applications, water filtration, oxygen systems, boiler feed lines, centrifugal pump and compressor systems and process applications. [See More]
- Media: Hydraulic; Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Process Industries, Construction
- Material Of Construction: Aluminum (optional feature); Brass / Bronze (optional feature); Stainless Steel (optional feature)
- Valve Type: BallDisk
- Valve Size: 2.00 to 36.00
from KSB AG
Design. Flanged or weld end swing check valve, with bolted cover, internal hinge pin body of forged or welded steel construction; seats made ofwear and corrosion resistant 17% Cr steel or stellite. Applications. In industrial plants, power stations, process engineering and shipbuilding. For water,... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Swing
- Valve Size: 3.15 to 15.75
from Check-All Valve Mfg. Co.
For over 35 years, the compact, fluoropolymer (PTFE/FEP/PFA), Sanitary Insert Valve has been used as the most economical solution to providing a check valve in a new or existing sanitary piping system. This valve style is designed to fit into grooved-end clamp-type fittings. Since the Sanitary... [See More]
- Media: Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: FEP Encapsulator; PTFE
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 0.75
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. [See More]
- Media: Hydraulic (optional feature); Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Brass / Bronze (optional feature); Cast Iron (optional feature)
- Valve Type: Wafer
- Valve Size: 1.50 to 12.00
from KSB AG
Design. Flanged or weld end swing check valve, with bolted cover, internal hinge pin body of forged or welded steel construction; seats made ofwear and corrosion resistant 17% Cr steel. Applications. In industrial plants, power stations, process engineering and shipbuilding. For water, steam, gas,... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Swing
- Valve Size: 3.15 to 15.75
from Check-All Valve Mfg. Co.
The 3-A Sanitary Check Valve is an all 316/316L stainless steel check valve with a standard 32 Ra or better finish, (finer available) for use in new or existing sanitary systems. The 3SC design seals on the ID of sanitary ferrules with 3-A specified materials (standard is EPDM). The valve seals... [See More]
- Media: Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Stainless Steel
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 1.00
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. [See More]
- Media: Hydraulic (optional feature); Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Brass / Bronze (optional feature); Cast Iron (optional feature)
- Valve Type: Wafer
- Valve Size: 1.50 to 12.00
from KSB AG
Design. Swing check valve (SC) or piston check valve (PT) designed to ANSI/ASME. Forged steel A105 trim 8 (stellite/13% Cr). Pressure/temperature rating to ASME B16.34. Threaded ends (NPT ) to ASME B1.20.1. Socket weld ends (SW) to ASME B 16.11. Testing to API 598. Reduced bore. Boltedcover. [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Swing
- Valve Size: 0.59 to 1.97
from Check-All Valve Mfg. Co.
The Straight Sided Insert is a thread less check valve. designed to be inserted into any cavity where a check valve is needed and threads are not desired. Available Materials: 316 Stainless Steel (SS). Carbon Steel (CS). Alloy 20 (A2). Alloy C-276 (HC). Brass (BR). Alloy B (HB). MONEL ® (MO) [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276,, Titanium
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 0.50
from Mueller Steam Specialty
Can be used in a variety of applications including: chilled and hot water systems, refrigeration, plumbing, air conditioning, gas and liquid applications, water filtration, oxygen systems, boiler feed lines, and centrifugal pump and compressor systems. [See More]
- Media: Hydraulic (optional feature); Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Refrigeration, Plumbing
- Material Of Construction: Cast Iron
- Valve Type: BallDisk
- Valve Size: 2.00 to 36.00
from KSB AG
Design. Weld end non-return valve, Y-pattern, check disc with closing spring, pressure seal design, Hastelloy-faced body seats. Applications. In industrial plants, power stations, process engineering and shipbuilding. For water, steam, gas, oil and other non-aggressive fluids. Other fluids on... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Wafer
- Valve Size: 0.39 to 1.97
from Check-All Valve Mfg. Co.
The Tubing Check Valve-Flared is a three piece constructed valve with 37 º flared ends which conform to J. I. C. and S. A. E. Hydraulic Standards. These valves are designed for maximum flow with minimal pressure drop. Available Materials: 316 Stainless Steel (SS). Brass (BR). Carbon Steel (CS) [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 0.25
from Mueller Steam Specialty
Can be used in a variety of applications including: chilled and hot water systems, refrigeration, plumbing, air conditioning, gas and liquid applications, water filtration, oxygen systems, boiler feed lines, and centrifugal pump and compressor systems. [See More]
- Media: Hydraulic (optional feature); Air; Compressed Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Refrigeration, Plumbing
- Material Of Construction: Cast Iron
- Valve Type: BallDisk
- Valve Size: 2.00 to 24.00
from KSB AG
Design. Weld end swing check valve in pressure seal design, with internal hinge pin, billet forged body; seats made of wear and corrosion resistant stellite. Applications. In industrial plants, power stations, process engineering and shipbuilding. For water, steam, gas, oil and other non-aggressive... [See More]
- Media: Water; Hot Water; Cold Water ; Gas; Steam; Non-Aggressive Fluids
- Material Of Construction: Steel
- Valve Type: Swing
- Valve Size: 1.97 to 31.50
from Check-All Valve Mfg. Co.
The Tubing Check Valve is a three piece constructed check valve with flareless tube ends. The valve is designed for minimum pressure drops. The valves are furnished complete with ferrules and nuts. Available Materials: 316 Stainless Steel (SS). Brass (BR). Carbon Steel (CS) [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 0.12
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. [See More]
- Media: Hydraulic (optional feature); Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature)
- Material Of Construction: Stainless Steel (optional feature); Carbon Steel
- Valve Type: Wafer
- Valve Size: 2.00 to 12.00
from Check-All Valve Mfg. Co.
The Union Insert Valve is the threaded pipe counterpart of the Flange Insert Valve. Designed to be inserted into most standard ground joint unions, it provides the simplest and most economical way to install a check valve in a threaded pipe system. A check valve may be installed anywhere in the... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Material Of Construction: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Valve Type: Lift Check; Poppet; Back Flow
- Valve Size: 0.50