Air Flow Check Valve

Description: Simple hydraulic flow restrictor that allows fluid to flow in one direction only. In-line mounting

• Connection: Threaded
• Media Description: Air, Compressed Air, Hydraulic Fluid
• Pressure Rating: 7500 psi

Description: 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

• Material of Construction: Stainless Steel
• Media Description: Air, Gas
• Pressure Rating: 100000 psi
• Valve Type: Ball / Disk Check Valves

Description: Holds clamping pressure until released by a separate pilot pressure line (allows only one-way flow until released). Can be used as a safety device in case the fluid line to the fixture could become damaged. Can also be used to prevent workpieces from floating between opposing clamps. Leakage

• Connection: Threaded
• Media Description: Air, Compressed Air, Hydraulic Fluid
• Pressure Rating: 7500 psi
• Valve Size: 0.2500 to 0.5000 inch

Description: Qosina is a leading supplier of High Flow Check Valve with 0.040 psi CP, Fits 3/32 inch OD Tubing; 0.1 inch - 0.08 inch ID (0.093 inch, 2.4 mm; 2.5 mm - 2 mm). Get fast shipping and volume discounts on Check Valves parts.

• Pressure Rating: 0.0400 psi
• Valve Type: Check Valves

Description: Qosina is a leading supplier of High Flow Check Valve with 0.29 psi CP, Both Ports 0.339 inch ID (8.6 mm). Get fast shipping and volume discounts on Tubing to Tubing parts.

• Pressure Rating: 0.2900 psi
• Valve Type: Check Valves

Description: Air Activated/ Differential Check Valves. For use with M-7, M-10, M-15, M-25 and M-30 Meters. Designed to stop the flow whenever air or vapor is present thereby assuring accurate measurement.

• Connection: Bolt Flange
• Material of Construction: Aluminum, Stainless Steel
• Media Description: Gas, Gasoline / Diesel Fuel

Description: Qosina is a leading supplier of High Flow Check Valve with 0.035 psi CP, Fits 1/4 inch OD Tubing; 0.24 inch - 0.255 inch ID (0.25 inch, 6.4 mm; 6.1 mm - 6.5 mm). Get fast shipping and volume discounts on Tubing to Tubing parts.

• Pressure Rating: 0.0350 psi
• Valve Type: Check Valves

Description: Qosina is a leading supplier of High Flow Check Valve with 0.061 psi CP, Fits 1/8 inch OD Tubing; 0.115 inch - 0.13 inch ID (0.125 inch, 3.2 mm; 2.9 mm - 3.3 mm). Get fast shipping and volume discounts on Tubing to Tubing parts.

• Pressure Rating: 0.0610 psi
• Valve Type: Check Valves

Description: This high flow check valve permits free flow in one direction and no flow (checked) 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,

• Connection: Threaded
• Flow (Cv): 0.0 to 0.1000
• 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, Steam, Other

Description: 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

• Agency / Standard: ANSI, API
• Connection: Bolt Flange
• Flow (Cv): 55 to 2300
• Material of Construction: Stainless Steel, Steel

Description: 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

• Agency / Standard: ANSI, API
• Connection: Bolt Flange
• Flow (Cv): 1690 to 7970
• Material of Construction: Exotic Metal, Stainless Steel, Steel

Description: The 695 series is a general purpose check valve that operates in any position, horizontal or vertical. A great low-resistance, high flow check valve where space is limited. Available in nylon for general purpose use and polypropylene for excellent chemical

• Material of Construction: Polypropylene (PP)
• Valve Size: 0.1875 inch

Description: High-performance check valve for use with liquid media and air pressure These brass check valves are specially designed for hydraulic and pneumatic applications in plant engineering and are well proven in applications with submesible pump, pressure, air

• Actuation: Mechanical Device
• Connection: Threaded
• Media Temperature: -4 to 275 F
• Pressure Rating: 696 psi

Description: vertical up-flow or horizontal installations. Pressure rating @ 73 water-full flow open 150 psi; back pressure closed-75 psi. Max. temp. 140F. Not for use with compressed air or gas.

• Valve Type: Swing Check Valves

Description: Designed for liquids and gases where flow reversal can cause surge and water hammer.

• Agency / Standard: ANSI, API
• Connection: Bolt Flange
• Material of Construction: Stainless Steel, Other
• Media Description: 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: Designed for liquids and gases where flow reversal can cause surge and water hammer. Elastomer seats provide bubble-tight shutoff.

• Agency / Standard: ANSI, API
• Connection: Bolt Flange
• Material of Construction: Brass / Bronze, Ductile Iron, Stainless Steel, Other
• Media Description: 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: 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

• Agency / Standard: ANSI, ASME
• Connection: Bolt Flange
• Flow (Cv): 5.8 to 90
• Material of Construction: Stainless Steel

Description: The Tubing Check Valve-Flared is a three piece constructed valve with 37º 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)

• Agency / Standard: ISO
• Back Flow Preventer Assembly: Yes
• Connection: Threaded, Tube Fitting
• Flow (Cv): 16

Description: Engineered to meet or exceed all requirements for unloading dry bulk products. Offers significant cost and quality improvements over older style valves. Lightweight aluminum (3 lbs) - Mounts at any angle - Stainless internal components - FDA approved silicone rubber sealing surfaces -

• Valve Type: Check Valves

Description: adjustment of the amount of controlled flow passing through the valve. Flow enters port 1, travels through an orifice sized by the tapered stem and out port 2. The flow control features a by-pass check which allows rapid free flow out port 1. Pneumadyne

• Connection: Threaded
• Flow (Cv): 0.0900
• Material of Construction: Brass / Bronze, Exotic Metal, Stainless Steel
• Media Description: Air, Compressed Air, Water

Description: circuitry • Octoport outlet design • Indicator shows valve position • Mutiple porting speeds piping • Micro gap construction - snap action and no blow by Media: Air, Water or Oil Flow: 9 scfm @ 100 psig Pilot Pressure Minimum: R

• Connection: Threaded
• Media Description: Air, Water, Other
• Media Temperature: 32 to 180 F
• Pressure Rating: 150 psi

Description: Spring Loaded Check Valves. Provides back pressure to increase air/vapor eliminator efficiency and to prevent reverse flow.

• Connection: Compression Fitting
• Material of Construction: Steel
• Media Description: Gas, Gasoline / Diesel Fuel
• Valve Type: Ball / Disk Check Valves

Description: system is designed to minimize the effect that dirt particles have on the components. Due to the sleek, internal aero-dynamic design of the check valve, chatter and flow restriction is greatly reduced. Almost all connection types are possible: Internal threads or tube

• Actuation: Mechanical Device
• Connection: Threaded
• Flow (Cv): 0.2000 to 57.4
• Media Temperature: -4 to 248 F

Description: The R-614 Multi Check Valve integrates four check valves in one compact valve body. Take advantage of the many features of this versatile line including easy manifold mounted design, integrated circuitry, Octoport outlet design, maximized performance and more. •

• Connection: Threaded
• Media Description: Air, Water, Other
• Media Temperature: 32 to 180 F
• Pressure Rating: 150 psi

Description: circuitry • Octoport outlet design • Indicator shows valve position • Mutiple porting speeds piping • Micro gap construction - snap action and no blow by Media: Air, Water or Oil Flow: 9 scfm @ 100 psig Pilot Pressure

• Connection: Threaded
• Media Description: Air, Water, Other
• Media Temperature: 32 to 180 F
• Pressure Rating: 150 psi

Description: 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

• Agency / Standard: ANSI
• Connection: Clamp Flange
• Flow (Cv): 2.4 to 109
• Material of Construction: Stainless Steel

Description: The Check Valves permit flow in one direction only; the operation of the check valve is based on the movement of a small disc within the housing. The disc shifts within the housing as the pressure differential changes from forward to reverse. A flat surface on one

• Material of Construction: Polypropylene (PP)
• Media Description: Air, Compressed Air
• Media Temperature: 40 to 120 F
• Pressure Rating: 10 psi

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: Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications.

• Agency / Standard: ANSI
• Connection: Bolt Flange
• Material of Construction: Other
• Media Description: 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: Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications.

• Connection: Bolt Flange
• Material of Construction: Stainless Steel
• Media Description: 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
• Media Temperature: Up to 100 F

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. Sizes 1/2" - 2" pressure rated to 235 psi @ 73F, sizes 3" -

• Connection: Threaded, Union
• Material of Construction: CPVC
• Valve Size: 3 inch
• Valve Type: Ball / Disk Check Valves

Description: The Beswick flow control valve provides control of small bore air cylinders with hysteresis-free control down to bubble-tight shut off. The size of the radial inlet orifice is selected to be compatible with the approximate maximum flow needed in the application. An O-ring

• Actuation: Manual / Hand, Other
• Connection: Threaded
• Flow (Cv): 0.0 to 0.0680
• Pressure Rating: 0.0 to 200 psi

Description: Maximum Operating Pressure 125 psi. Maximum Operating Temperature 140F. Seat Area Open Diameter .438. The 694 Series Check Valve covers a wide range of air and fluid applications. The 694 Check is a compact design with a 1/3 psi cracking pressure, high flow rate,

• Material of Construction: Polypropylene (PP)
• Valve Size: 0.7500 inch

Description: , Poppet & Ball style check valves NSF approved materials available In-line, Right-angle, Panel-mount body styles Air, Vacuum, Water, Gas, Cryogenic, Oxygen, Refrigeration, Medical, Dental, Metering & Flow Control applications

• Material of Construction: Brass / Bronze
• Pressure Rating: 3000 psi
• Valve Size: 0.2500 to 0.3750 inch
• Valve Type: Ball / Disk Check Valves

Description: • Compact design • In-line mounted • Quiet operation • Instantaneous shutoff against reverse flow, low forward pressure opening • Disc seats before reverse flow to avoid fluid shock on reverse pressure differential

• Connection: Threaded
• Flow (Cv): 3.6
• Material of Construction: Brass / Bronze
• Media Description: Air, Water

Description: the DCV3, with face-to-face dimensions conforming to EN 558 part 2, series 52. As standard it will be supplied with a metal-to-metal seat for use on steam applications. Where it is being used on oil, air, gas and water applications, alternative seat material is available - see 'Optional

• Connection: Clamp Flange
• Material of Construction: Stainless Steel
• Media Description: Air, Water, Gas, Steam
• Media Temperature: 14 to 752 F

Description: 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

• Actuation: Other
• Flow (Cv): 3.2
• Media: Air, Water, Hot Water, Cold Water, Ground Water, Potable Water, Salt Water, Gas, Gasoline / Diesel Fuel, High Purity Gas, LP - Gas, Natural Gas, Sour Gas, Specialty / Corrosive Gases, Hydraulic Fluid, Steam, Other
• Number of Ports/Ways: 2

Description: 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

• Connection: Socket Weld / Solder
• Material of Construction: Copper
• Media Description: Gas, Other
• Media Temperature: -22 to 248 F

Description: DCV8 disc check valves are of a wafer pattern, designed to be sandwiched between DIN 2501 and EN 1092 flanges. Their function is to prevent reverse flow on a wide variety of fluids. The DCV8 is designed for use with agressive fluids, vapours, acids and alkalines at high

• Connection: Clamp Flange
• Material of Construction: Stainless Steel
• Media Description: Air, Water, Gas, Steam
• Media Temperature: -321 to 752 F

Description: The fixed orifice flow control valve is designed with a factory pre-set orifice. Rotation of the knurled sleeve will not change the orifice setting. Ideal for applications where improper adjustment of a flow setting could damage the machine or process. Fluid is metered in one

• Actuation: Other
• Connection: Threaded
• Flow (Cv): 3.50E-4 to 0.0190
• Pressure Rating: 0.0 to 200 psi

Description: The check valves in the VNR Series are available with M5 (10-32 UNF), 1/8" and 1/4" ports. They must be used when it is required to intercept a flow in one direction only. The design of these valves is of the poppet type and this feature allows operation at low pressures

• Connection: Threaded
• Material of Construction: Brass / Bronze
• Media Description: Air, Compressed Air
• Media Temperature: 32 to 175 F

Description: High Flow Capacity Low Cracking Pressure Compact and Light Weight Provides Flow in One Direction Built-In One-Touch Fittings Reduce Installation Time

• Media Description: Air
• Media Temperature: 23 to 140 F
• Pressure Rating: -14.5 to 145 psi
• Valve Size: 0.3750 inch

Description: , Poppet & Ball style check valves NSF approved materials available In-line, Right-angle, Panel-mount body styles Air, Vacuum, Water, Gas, Cryogenic, Oxygen, Refrigeration, Medical, Dental, Metering & Flow Control applications

• Material of Construction: Brass / Bronze
• Pressure Rating: 1200 psi
• Valve Size: 0.7500 inch
• Valve Type: Poppet Check Valves

Description: , Poppet & Ball style check valves NSF approved materials available In-line, Right-angle, Panel-mount body styles Air, Vacuum, Water, Gas, Cryogenic, Oxygen, Refrigeration, Medical, Dental, Metering & Flow Control applications

• Material of Construction: Brass / Bronze
• Pressure Rating: 1200 psi
• Valve Size: 0.2500 to 0.3750 inch
• Valve Type: Poppet Check Valves

Description: , Poppet & Ball style check valves NSF approved materials available In-line, Right-angle, Panel-mount body styles Air, Vacuum, Water, Gas, Cryogenic, Oxygen, Refrigeration, Medical, Dental, Metering & Flow Control applications

• Material of Construction: Stainless Steel
• Pressure Rating: 5000 psi
• Valve Size: 0.3125 inch
• Valve Type: Poppet Check Valves