Body Material Body Material |
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Connection Style Connection Style |
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| Threaded | Barbed |
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| Threaded Union | Unthreaded |
For Use With For Use With |
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Valve Type Valve Type |
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Mounting Orientation Mounting Orientation |
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Check Valve Type Check Valve Type |
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Shape Shape |
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 | Straight |
Maximum Pressure Maximum Pressure |
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Maximum Temperature Maximum Temperature |
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Minimum Temperature Minimum Temperature |
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Valve Function Valve Function |
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Seal Material Seal Material |
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Actuation Actuation |
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Fitting Type Fitting Type |
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About Backflow-Prevention Valves
More
Plastic Threaded Check Valves
Plastic provides a lightweight alternative to metal. These valves open to allow flow in one direction and close when flow stops or reverses.
Glass-filled polypropylene valves are more corrosion resistant than PVC valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Piston Material: Polypropylene Plastic
- Spring Material: 302 Stainless Steel
- Seal Material: Buna-N Rubber
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
NPT Female Inlet × NPT Female Outlet | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4 | 2.3 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2" | 0000000 | 000000 |
| 3/8 | 4.2 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2 1/16" | 0000000 | 00000 |
| 1/2 | 8.1 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2 1/2" | 0000000 | 00000 |
| 3/4 | 12.5 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2 3/4" | 0000000 | 00000 |
Check Valves with Barbed Fittings
Barbs grip onto tubing, providing a secure hold. These valves open to allow flow in one direction and close when flow stops or reverses.
Polypropylene valves are more corrosion resistant than PVC or nylon valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Ball Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Buna-N Rubber
| For Tube ID | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Barbed Inlet × Barbed Outlet | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8" | 0.1 | 125 psi @ 70° F | 1 | 30° to 140° | White | 1 3/8" | 0000000 | 00000 |
| 3/16" | 0.2 | 125 psi @ 70° F | 1 | 30° to 140° | White | 1 3/4" | 0000000 | 0000 |
| 1/4" | 0.3 | 125 psi @ 70° F | 1 | 30° to 140° | White | 2 1/16" | 0000000 | 0000 |
High-Cycling Check Valves
With internal components that resist wear from frequent operation, these valves can cycle as often as once per second. Barbed fittings and unthreaded fittings grip onto tubing, providing a secure hold. All valves open to allow flow in one direction and close when flow stops or reverses.
Polypropylene valves are more corrosion resistant than nylon valves.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water
- Diaphragm Material: Fluoroelastomer Rubber
- Seal Material: Fluoroelastomer Rubber
| For Tube ID | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Barbed Male Inlet × Barbed Male Outlet | |||||||
|---|---|---|---|---|---|---|---|
| 3/16" | 15 psi @ 70° F | 0.5 | -20° to 250° | White | 1 11/16" | 00000000 | 00000 |
| 1/4" | 15 psi @ 70° F | 0.5 | -20° to 250° | White | 1 9/16" | 00000000 | 0000 |
| 5/16" | 15 psi @ 70° F | 0.5 | -20° to 250° | White | 1 3/4" | 00000000 | 0000 |
Unthreaded Male Inlet × Unthreaded Male Outlet | |||||||
| 1/8" | 15 psi @ 70° F | 0.5 | -20° to 250° | White | 1 5/8" | 00000000 | 0000 |
Easy-to-Install Threaded Check
Valves for Harsh Chemicals
To reduce installation time and allow for maintenance without detaching pipe connections, these valves have union fittings. The plastic body and fluoroelastomer seal provide excellent chemical resistance. Valves open to allow flow in one direction and close when flow stops or reverses.
Valves for drinking water meet NSF/ANSI 61.
Polypropylene valves are more corrosion resistant than PVC or CPVC valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Citric Acid, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Nitric Acid, Phosphoric Acid, Salt Water, Sodium Hypochlorite, Water
- Ball Material: Polypropylene Plastic
- Seal Material: Fluoroelastomer Rubber
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Specifications Met | Each | |
NPT Female × NPT Female | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 4.8 | 150 psi @ 70° F | 1 | 35° to 160° | White | 4 11/16" | ASTM D4101 | 0000000 | 000000 |
| 3/4 | 7.7 | 150 psi @ 70° F | 1 | 35° to 160° | White | 4 3/4" | ASTM D4101 | 0000000 | 000000 |
| 1 | 11 | 150 psi @ 70° F | 1 | 35° to 160° | White | 5 3/8" | ASTM D4101 | 0000000 | 000000 |
| 1 1/2 | 45 | 150 psi @ 70° F | 1 | 35° to 160° | White | 6 3/4" | ASTM D4101 | 0000000 | 000000 |
| 2 | 130 | 150 psi @ 70° F | 1 | 35° to 160° | White | 8 1/8" | ASTM D4101 | 0000000 | 000000 |
Threaded Check Valves for Harsh Chemicals
These valves open to allow flow in one direction and close when flow stops or reverses.
Valves for drinking water meet NSF/ANSI Standard 61.
Polypropylene valves are more corrosion resistant than PVC or CPVC valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Ammonia, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Drinking Water, Ethanol, Ethylene Glycol, Isopropyl Alcohol, Kerosene, Methanol, Natural Gas, Oil, Oxygen, Phosphoric Acid, Potable Water, Salt Water, Soap Solutions, Sodium Hydroxide, Water
- Ball Material: Polypropylene Plastic
- Seal Material: Fluoroelastomer Rubber
| Pipe Size | DIN Size, mm | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Specifications Met | Each | |
NPT Female × NPT Female | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | __ | 4.8 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 4 5/8" | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| 3/4 | __ | 7.7 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 4 3/4" | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| 1 | __ | 11 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 5 1/4" | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| 1 1/2 | __ | 45 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 6 3/4" | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| 2 | __ | 130 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 8" | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
Metric Female × Metric Female | ||||||||||
| __ | 15 | 4.8 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 118mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 00000 |
| __ | 20 | 7.7 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 121mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| __ | 25 | 11 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 133mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| __ | 40 | 45 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 171mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| __ | 50 | 130 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 203mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
Check Valves with Barbed Fittings for Harsh Chemicals
Prevent backflow in chemical tubing lines. These valves have barbed fittings that grip onto tubing, providing a secure hold. The plastic body and fluoroelastomer seal provide excellent chemical resistance. Valves open to allow flow in one direction and close when flow stops or reverses.
Polypropylene valves are more corrosion resistant than nylon valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Acetone, Air, Argon, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Helium, Kerosene, Krypton, Mineral Spirits, Neon, Nitrogen, Oil, Propane, Salt Water, Soap Solutions, Toluene, Water, Xenon, Xylene
- Ball Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
Plastic Threaded Check Valves for Oil and Fuel
Plastic provides a lightweight alternative to metal. These valves open to allow flow in one direction and close when flow stops or reverses.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
- For Use With: Diesel Fuel, Gasoline, Oil
- Piston Material: Polypropylene Plastic
- Spring Material: 302 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
NPT Female × NPT Female | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4 | 2.3 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2" | 0000000 | 000000 |
| 3/8 | 4.2 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2 1/16" | 0000000 | 00000 |
| 1/2 | 8.1 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2 1/2" | 0000000 | 00000 |
| 3/4 | 12.5 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2 3/4" | 0000000 | 00000 |