Low Pressure Gas Check Valve

Description: The check valve permits free flow in one direction and no (checked) flow in the opposite direction. This valve is specified in many applications because of its very low cracking pressure (typically less than 0.5 psig), its excellent repeatability, and leak-tight

• Back Flow Preventer Assembly: Yes
• Connection: Threaded, Tube Fitting
• Flow (Cv): 0.0 to 0.0480
• Material of Construction: Brass / Bronze, Stainless Steel, Other

Description: Features Compact (OD f18mm[0.71inch]), Light weight (33g[0.07pound]). Cracking pressure is extremely low: 1 kPa[0.15psi] or less. Leakage is minute: 1 ml / min or less at 10 kPa[1.45psi]. Applications Machine Tools:Milling

• Connection: Tube Fitting
• Material of Construction: Other
• Media Description: Air, Compressed Air, Water
• Pressure Rating: 36.26 psi

Description: from 2 to 40 psi. Like the Basic-Check® valve, the Restrictor Check provides reliable, low maintenance service for a wide range of fluids and gases at various pressure/temperature combinations. The valve consists of a guard cage, spring, valve

• Connection: Threaded
• Flow (Cv): 5.8 to 90
• Material of Construction: Stainless Steel
• Media Description: Air, Compressed Air, Water, Hot Water, Cold Water, Potable Water, Salt Water, Wastewater, Gas, Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Hydraulic Fluid

Description: check valves. Danfoss makes check valves for all commonly used refrigerants and refrigeration applications, for commercial as well as industrial refrigeration purposes. Danfoss check valves are available in most connection types and sizes, for low and

• Connection: Socket Weld / Solder
• Material of Construction: Copper
• Media Description: Gas, Other
• Media Temperature: -58 to 284 F

Description: Specifically designed for use on sump pump discharge lines. Includes compression end connectors with Buna-N gaskets for use on either 1-1/4" or 1-1/2" pipe. All plastic construction with elastomer seals - no metal parts. Angled seat and weighted flapper for low-pressure seal. Suitable for

• Valve Type: Swing Check Valves

Description: 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

• Connection: Threaded
• Flow (Cv): 5.8 to 90
• Material of Construction: Stainless Steel
• Media Description: Air, Compressed Air, Water, Hot Water, Cold Water, Potable Water, Salt Water, Wastewater, Gas, Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Hydraulic Fluid

Description: Low pressure drop refrigerant stop check valves are butt-weldable directly to steel piping, thereby eliminating potential leaky flanges or threaded joints and simplifying installation. The important features of these valves are non-leak packing and have a back seat

• Connection: Butt Weld
• Media Description: Other
• Media Temperature: -60 to 240 F
• Pressure Rating: 365 psi

Description: , gas analyzer etc. Battery:Household fuel cell, secondary battery, gas engine etc. Water (liquid) treatment: Pure water production, pure water recycling. Gas generator related: Compressor, compact pressure vessel, various gas generator etc. Others: Oxygen capsule,

• Connection: Threaded
• Flow (Cv): 0.2800 to 6.9
• Material of Construction: Brass / Bronze, Stainless Steel
• Media Description: Air, Compressed Air, Water

Description: , gas analyzer etc. Battery:Household fuel cell, secondary battery, gas engine etc. Water (liquid) treatment: Pure water production, pure water recycling. Gas generator related: Compressor, compact pressure vessel, various gas generator etc. Others: Oxygen capsule,

• Connection: Threaded
• Flow (Cv): 0.2800 to 6.9
• Material of Construction: Brass / Bronze, Stainless Steel
• Media Description: Air, Compressed Air, Water

Description: 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

• Agency / Standard: ANSI, API, AWWA, MSS, NSF
• Connection: Bolt Flange
• Flow (Cv): 19 to 1355
• Material of Construction: Cast Iron, Stainless Steel, Steel

Description: 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,

• Agency / Standard: ANSI, API, AWWA
• Connection: Bolt Flange
• Flow (Cv): 17 to 11100
• Material of Construction: Aluminum, Brass / Bronze, Cast Iron, Exotic Metal, Stainless Steel, Steel

Description: , F6, or FP are not practical. Many valves in this series meet API 594 requirements. Consult the factory for complete details. WV valves can be used as check valves, low pressure relief valves, and vacuum breakers by simply using deferent spring

• Agency / Standard: ANSI, API, ASME, MSS, ISO
• Back Flow Preventer Assembly: Yes
• Connection: Bolt Flange
• Flow (Cv): 89

Description: This Ultra Miniature low cracking pressure check valve permits free flow in one direction and no (checked) flow in the opposite direction. This valve is specified in many applications because of its very low cracking pressure (typically less than 0.5

• Connection: Threaded, Tube Fitting
• Flow (Cv): 0.0 to 0.0480
• Material of Construction: Brass / Bronze, Stainless Steel, Other
• Media Description: Air, Compressed Air, Water, Hot Water, Cold Water, Potable Water, Wastewater, Gas, Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Hydraulic Fluid, Other

Description: A complete range of gate, globe and check valves for all of your high pressure and high temperature applications, proven over years of service in thermal and nuclear power plants as well as oil and gas industry applications around the world. Only Velan offers the

• Agency / Standard: ASME
• Connection: Butt Weld, Socket Weld / Solder
• Media Description: Water, Wastewater, Steam
• Valve Size: 2.5 to 14 inch

Description: 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.

• Connection: Threaded
• Flow (Cv): 0.2000 to 57.4
• Material of Construction: Stainless Steel
• Media Description: Air, Gas

Description: , component gas analysis, gas analyzer etc. Battery:Household fuel cell, secondary battery, gas engine etc. Water (liquid) treatment: Pure water production, pure water recycling. Gas generator related: Compressor, compact pressure vessel, various gas

• Connection: Threaded
• Flow (Cv): 28 to 32
• Material of Construction: Other
• Media Description: Air, Compressed Air, Water

Description: Flow-tested for minimum turbulence. Fully serviceable, replaceable components, uses standard o-ring seat. Safe-T-Blocked seal carrier - full rated pressure. Easily converted to foot valve. NSF Certified for potable water use. Low extractable PVC material. Sizes 1/2" - 2"

• Connection: Threaded, Union, Socket Weld / Solder
• Material of Construction: PVC
• Valve Size: 0.5000 inch
• Valve Type: Ball / Disk Check Valves

Description: 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

• Agency / Standard: ASME
• Connection: Bolt Flange, Butt Weld
• Material of Construction: Stainless Steel, Steel
• Media Description: Water, Hot Water, Cold Water, Gas, Steam, Other

Description: “press-in” installation ensuring retention and prevents any by-pass leakage around the valve. The valves are all stainless steel construction providing compatibility with a wide range of fluids and gases and contain a high-quality metal to metal seat for low leakage,

• Valve Type: Check Valves

Description: quality metal to metal seat provides low leakage, a highly repeatable cracking pressure and long life. Features All Stainless Steel Free Flow Lohm Rate: 140 Lohms Lee's Highest Flow Capacity 5.5mm Diameter Check Valve Guided Ball Design 100% Performance Tested Unique

• Valve Type: Check Valves

Description: 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

• Agency / Standard: ANSI, API
• Connection: Threaded, Bolt Flange, Butt Weld, Socket Weld / Solder
• Material of Construction: Exotic Metal, Stainless Steel, Other
• Media Description: Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Other

Description: the valve. These valves are 5.5 mm in diameter and contain all stainless steel construction providing compatibility with a wide range of fluids and gases. A high quality metal seat provides low leakage, a highly repeatable cracking pressure and long life. The 5.5

• Valve Type: Check Valves

Description: the valve. These valves are 8 mm in diameter and contain all stainless steel construction providing compatibility with a wide range of fluids and gases. A high quality metal seat provides low leakage, a highly repeatable cracking pressure and long life. The 8 mm

• Valve Type: Check Valves

Description: Cartridge, designed specifically for degassing (sparging) lines to prevent solvent backup if the sparging gas runs out. This check valve will help prevent potential solvent cross-contamination and damage to the gas regulating valve. The cracking pressures

• Valve Type: Check Valves, Pressure Relief Valves

Description: Cartridge, designed specifically for degassing (sparging) lines to prevent solvent backup if the sparging gas runs out. This check valve will help prevent potential solvent cross-contamination and damage to the gas regulating valve. The cracking pressures

• Valve Type: Check Valves, Pressure Relief Valves

Description: 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.

• Agency / Standard: ANSI, API
• Connection: Threaded, Socket Weld / Solder
• Material of Construction: Exotic Metal, Stainless Steel, Other
• Media Description: Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Other

Description: 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

• Agency / Standard: ANSI, API
• Connection: Threaded, Bolt Flange, Butt Weld
• Material of Construction: Exotic Metal, Stainless Steel, Other
• Media Description: Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Other

Description: The Universal Low Pressure check valve is a one piece body machined from bar stock and is designed for minimum pressure drop. The valve is light, compact, and provides maintenance free dependable service. For applications above 3000 PSIG, view our UN-10

• Agency / Standard: ISO
• Back Flow Preventer Assembly: Yes
• Connection: Threaded
• Flow (Cv): 11

Description: 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

• Connection: Socket Weld / Solder
• Material of Construction: Copper
• Media Description: Gas, Other
• Media Temperature: -76 to 302 F

Description: Cartridge, designed specifically for degassing (sparging) lines to prevent solvent backup if the sparging gas runs out. This check valve will help prevent potential solvent cross-contamination and damage to the gas regulating valve. The cracking pressures

• Valve Type: Check Valves, Pressure Relief Valves

Description: Cartridge, designed specifically for degassing (sparging) lines to prevent solvent backup if the sparging gas runs out. This check valve will help prevent potential solvent cross-contamination and damage to the gas regulating valve. The cracking pressures

• Valve Type: Check Valves, Pressure Relief Valves

Description: 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

• Connection: Socket Weld / Solder
• Material of Construction: Copper
• Media Description: Gas, Other
• Media Temperature: -76 to 302 F

Description: 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

• Connection: Socket Weld / Solder
• Material of Construction: Copper
• Media Description: Gas, Other
• Media Temperature: -76 to 302 F

Description: 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

• Valve Type: Check Valves

Description: 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

• Media Description: Gas
• Pressure Rating: 6500 psi
• Valve Size: 1.5 to 6 inch
• Valve Type: Lift Check Valves

Description: reputation in refineries, petrochemical, gas liquefaction, other process industries. They are also frequently used in HVAC applications because of their cost-efficient design and non-slam properties. Double door check valves are spring loaded for fast, non-slam shut-off against

• Valve Type: Check Valves

Description: technology sets a new standard in performance critical areas such as intrinsic safety, reliability and compact design. The linear valve is designed with an aerodynamic geometry to minimize flow resistance, resulting in extremely low pressure drop for improved gas grid

• Valve Type: Shut Off Valves

Description: 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

• Agency / Standard: ISO
• Back Flow Preventer Assembly: Yes
• Connection: Threaded
• Flow (Cv): 6.5

Description: High pressure valve with automatic venting and check valve for inert gases up to 6,000 psi (420 bar) The Block & Bleed high pressure valve type TV17GER is also designed as a shut-off valve for pressurized gases. The valve

• Connection: Threaded
• Material of Construction: Brass / Bronze, Stainless Steel
• Media: High Purity Gas
• Pressure Rating: 6000 psi

Description: High pressure valve with check valve for inert gases up to 6,000 psi (420 bar) The high pressure valve type TV17GR is designed as a shut-off valve for pressurized gases. The valve prevents backflow of the medium at the outlet

• Connection: Threaded
• Material of Construction: Brass / Bronze, Stainless Steel
• Media: High Purity Gas
• Pressure Rating: 6000 psi

Description: Class 150 or 300 flanges, and the FIV Class 600 (F6) valves are designed for schedule 80 pipe or Class 600 flanges. Flange Insert valves can be used as check valves, low pressure relief valves, and vacuum breakers by simply using different spring

• Agency / Standard: ANSI, ASME, MSS, ISO
• Back Flow Preventer Assembly: Yes
• Connection: Bolt Flange
• Flow (Cv): 6.1

Description: High pressure valve with automatic venting for inert gases up to 6,000 psi (420 bar) The high pressure valve type TV17GE is designed as a shut-off valve for pressurized gases. Additionally the outlet port of the valve is vented after closing.

• Connection: Threaded
• Material of Construction: Brass / Bronze, Stainless Steel
• Media: High Purity Gas
• Pressure Rating: 6000 psi

Description: , sulfuric acid, and many other abrasive and corrosive materials, this double-sprung valve operates under pressures up to 15000 psi. Our plate valves, available in a broad range of sizes, are made of: 316 Stainless Steel Monel® In addition to this base

• Material of Construction: Stainless Steel
• Media Description: Gas
• Pressure Rating: 15000 psi
• Valve Type: Lift Check Valves

Description: 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

• Agency / Standard: API, ASME
• Connection: Bolt Flange
• Material of Construction: Steel
• Media Description: Gas

Description: small solids and high pressures. While our standard AR valve seats come in 316 Stainless Steel, they are also available in 17-4 hardened Stainless Steel and other alloys. The valve member is made of the same material as the seat, either with or without a polyurethane insert for

• Material of Construction: Stainless Steel
• Media Description: Gas
• Media Temperature: Up to 160 F
• Pressure Rating: 15000 psi

Description: Program Angle shut-off valves Check valves Control valves with electric, pneumatic and hydraulic actuators Specially developed High-pressure valve (pulsation valve) PN 3200 with hydraulic actuator and electronic controller for use in

• Valve Type: Angle Valves, Butterfly Valves, Check Valves, Control Valves, Diaphragm Valves, Globe Valves, Piston Valves, Pressure Relief Valves

Description: -20 mA output as standard Range Identification Relay Maintenance free LAN/Web control Micro-valve for very low dead volume and fast purging time 3U cabinet Applications: Gas Manufacturing Facilities: monitoring Pressure Swing Adsorption (PSA

• Application: Process Gas
• Features: Self Calibration
• Instrument Type: Analyzer
• Operating Temperature: 50 to 113 F

Description: The SA-10 gas booster is designed for 200,000 psi max service. 2 stages ensure maximum pumping efficiency at these high pressures. The low pressure (2,000 psi max) drive equipment consists of oil reservoir, electric motor and pump, pressure regulating valve,

• Features: Compressor Included
• Generator Type: Hydrogen, Specialty / Other
• Outlet Pressure: 200000 psi

Description: first stage discharges slightly more gas than the second stage requires. An interstage cooler and receiver, check valves, necessary high pressure piping, and interstage and high pressure discharge instrumentation are supplied. These boosters will accept bottle

• Features: Compressor Included
• Generator Type: Hydrogen, Specialty / Other
• Outlet Pressure: 60000 psi

Description: drop across orifice plates, liquid levels with bubbler systems and pressures in fluid amplifier or fluidic systems. It also checks gas-air ratio controls and automatic valves, and monitors blood and respiratory pressures in medical care equipment.

• Accuracy: 2 ±% FS
• Dial Size: 4 inch
• Display: Analog
• Liquid Filled: Yes

Description: discharges slightly more gas than the second stage requires. An interstage cooler and receiver, check valves, necessary high pressure piping, and interstage and high pressure discharge instrumentation are supplied. These boosters will accept bottle pressures

• Features: Compressor Included
• Generator Type: Hydrogen, Specialty / Other
• Outlet Pressure: 100000 psi

Description: The DA-7 gas booster is designed for 100,000 psi max service. The low pressure (2,000 psi max) drive equipment consists of oil reservoir, electric motor and pump, pressure regulating valve, directional control valve, driving pressure indicating gage,

• Features: Compressor Included
• Generator Type: Hydrogen, Specialty / Other
• Outlet Pressure: 100000 psi

Description: Fuel Safety Valve High & Low Gas Pressure Switches* High Temperature Limit Switch Remote Station for Floor Mounting with Status Indicating Lights and Summer/Off/Winter Selector Switch Door Switch Air Flow Switch Rear Inlet Guard Block

• Fuel / Energy Source: Electric, Natural Gas / Propane
• Maximum Air Flow: 6500 to 7900 SCFM

Description: Association for Technical Inspection and Safety) Minimal pressure losses thanks to optimized flow patterns High-grade stainless steel 316 L construction Options for connecting test and analytical devices Condensate run-off valves on compressed gas housings

• Features: FDA Compliant
• Housing Material: Steel - Stainless
• Industry Use: Biopharmaceutical
• Maximum Pressure: 145 psi

Description: A complete range of gate, globe and check valves for all of your high pressure and high temperature applications, proven over years of service in thermal and nuclear power plants as well as oil and gas industry applications around the world. Only Velan offers the

• Media: Water
• Valve Size: 2.5 to 10 inch
• Valve Type: Butterfly Valves, Globe Valves

Description: Versatile, Reliable Pumps for a Wide Range of Applications Hydra-Cell positive displacement diaphragm pumps feature a seal-less pumping chamber so there are no seals, packing or cups to leak or replace. The seal-less design and check valves enable Hydra-Cell to handle abrasives and

• Discharge Size: 2 inch
• Maximum Discharge Pressure: 500 to 1500 psi
• Maximum Discharge Flow: 96 GPM
• Power Source: None, Pump Only, AC Powered, Gasoline / Diesel Engine, Natural Gas

Description: Versatile, Reliable Pumps for a Wide Range of Applications Hydra-Cell positive displacement diaphragm pumps feature a seal-less pumping chamber so there are no seals, packing or cups to leak or replace. The seal-less design and check valves enable Hydra-Cell to handle abrasives and

• Discharge Size: 1.5 inch
• Maximum Discharge Pressure: 500 to 3500 psi
• Maximum Discharge Flow: 38 GPM
• Power Source: None, Pump Only, AC Powered, Gasoline / Diesel Engine, Natural Gas

Description: Versatile, Reliable Pumps for a Wide Range of Applications Hydra-Cell positive displacement diaphragm pumps feature a seal-less pumping chamber so there are no seals, packing or cups to leak or replace. The seal-less design and check valves enable Hydra-Cell to handle abrasives and

• Discharge Size: 1.25 inch
• Maximum Discharge Pressure: 500 to 5000 psi
• Maximum Discharge Flow: 26 GPM
• Power Source: None, Pump Only, AC Powered, Gasoline / Diesel Engine, Natural Gas

Description: A complete range of gate, globe and check valves for all of your high pressure and high temperature applications, proven over years of service in thermal and nuclear power plants as well as oil and gas industry applications around the world. Only Velan offers the

• Media: Water
• Valve Size: 2.5 to 6 inch
• Valve Type: Butterfly Valves, Gate / Knife Valves

Description: inoperative. The recommended procedures for winterizing valves shall be as follows: the valve must be fully closed or fully opened and the body cavity should be purged with a nonreactive gas (for example, nitrogen) or filled with a fluid to produce a solution with a low

Description: inoperative. The recommended procedures for winterizing valves shall be as follows: the valve must be fully closed or fully opened and the body cavity should be purged with a nonreactive gas (for example, nitrogen) or filled with a fluid to produce a solution with a low