Connection Style Connection Style |
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| Barbed | Threaded |
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| Unthreaded | Quick Turn |
For Use With For Use With |
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Body Material Body Material |
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Mounting Orientation Mounting Orientation |
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Check Valve Type Check Valve Type |
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Maximum Pressure Maximum Pressure |
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End-to-End Length End-to-End Length |
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Seal Material Seal Material |
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Spring Material Spring Material |
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Diaphragm Material Diaphragm Material |
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Piston Material Piston Material |
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About Backflow-Prevention Valves
More
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.
Nylon valves are more impact resistant than PVC or polypropylene valves.
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 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.5 | 125 psi @ 70° F | 1 | 30° to 140° | Dark Gray | 3 1/2" | 0000000 | 000000 |
| 3/8" | Not Rated | 125 psi @ 70° F | 1 | 30° to 140° | Dark Gray | 3 1/2" | 0000000 | 00000 |
| 1/2" | Not Rated | 125 psi @ 70° F | 1 | 30° to 140° | Dark Gray | 3 1/2" | 0000000 | 00000 |
- 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 | 35° to 140° | White | 1 3/8" | 0000000 | 00000 |
| 3/16" | 0.2 | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 3/4" | 0000000 | 0000 |
| 1/4" | 0.3 | 125 psi @ 70° F | 1 | 35° to 140° | White | 2 1/16" | 0000000 | 0000 |
- For Use With: Air, Water
- Piston Material: Nylon Plastic
- Spring Material: 316 Stainless Steel
- Seal Material: Buna-N Rubber
| Pipe Size | For Tube ID | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
NPT Male Inlet × Barbed Outlet | ||||||||
|---|---|---|---|---|---|---|---|---|
1/8 | 3/16" | 125 psi @ 70° F | 1 | -20° to 180° | White | 1 1/2" | 0000000 | 000000 |
| 1/4 | 1/4" | 125 psi @ 70° F | 1 | -20° to 180° | White | 1 5/8" | 0000000 | 00000 |
| 1/4 | 3/8" | 125 psi @ 70° F | 1 | -20° to 180° | White | 1 5/8" | 0000000 | 00000 |
| 1/2 | 3/8" | 125 psi @ 70° F | 1 | -20° to 180° | White | 1 3/4" | 0000000 | 00000 |
| 1/2 | 1/2" | 125 psi @ 70° F | 1 | -20° to 180° | White | 1 3/4" | 0000000 | 00000 |
- 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 |
Heavy Duty Check Valves with Barbed Fittings
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Piston Material: Fluoroelastomer Rubber
- Spring Material: 302 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
For more durability than plastic barbed check valves, these have a stainless steel body. Barbs grip onto tubing, providing a secure hold. Valves open to allow flow in one direction and close when flow stops or reverses. The stainless steel body provides excellent corrosion resistance.
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 Tube ID | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
303 Stainless Steel Body | |||||||
|---|---|---|---|---|---|---|---|
| 1/4" | 0.5 | 300 psi @ 70° F | 2 | -10° to 300° | 4 1/4" | 0000000 | 000000 |
| 3/8" | 1.1 | 300 psi @ 70° F | 2 | -10° to 300° | 4 1/4" | 0000000 | 00000 |
| 1/2" | Not Rated | 300 psi @ 70° F | 2 | -10° to 300° | 4 3/8" | 0000000 | 00000 |
| 3/4" | Not Rated | 300 psi @ 70° F | 2 | -10° to 300° | 4 5/8" | 0000000 | 00000 |
| For Tube ID | Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
303 Stainless Steel Body | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 1/4 | 0.5 | 300 psi @ 70° F | 2 | -10° to 300° | 3 7/16" | 0000000 | 000000 |
| 3/8" | 3/8 | 1.1 | 300 psi @ 70° F | 2 | -10° to 300° | 3 7/16" | 0000000 | 00000 |
| 1/2" | 1/2 | Not Rated | 300 psi @ 70° F | 2 | -10° to 300° | 3 7/16" | 0000000 | 00000 |
| 3/4" | 3/4 | Not Rated | 300 psi @ 70° F | 2 | -10° to 300° | 3 1/2" | 0000000 | 00000 |
| Pipe Size | For Tube ID | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
303 Stainless Steel Body | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4 | 1/4" | 0.5 | 300 psi @ 70° F | 2 | -10° to 300° | 3 7/16" | 0000000 | 000000 |
| 3/8 | 3/8" | 1.1 | 300 psi @ 70° F | 2 | -10° to 300° | 3 7/16" | 0000000 | 00000 |
| 1/2 | 1/2" | Not Rated | 300 psi @ 70° F | 2 | -10° to 300° | 3 7/16" | 0000000 | 00000 |
| 3/4 | 3/4" | Not Rated | 300 psi @ 70° F | 2 | -10° to 300° | 3 1/2" | 0000000 | 00000 |
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.
Nylon valves are more impact resistant than polypropylene valves.
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: See table
- Seal Material: See table
| Pipe Size | For Tube ID | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Diaphragm Material | Seal Material | Color | End-to-End Lg. | Each | |
Barbed Male Inlet × Barbed Male Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| __ | 3/16" | 15 psi @ 70° F | 0.5 | -20° to 250° | Fluoroelastomer Rubber | Fluoroelastomer Rubber | White/Gray | 1 11/16" | 00000000 | 00000 |
| __ | 3/16" | 15 psi @ 70° F | 0.5 | -20° to 250° | Fluorosilicone Rubber | Fluorosilicone Rubber | White/Black | 1 11/16" | 00000000 | 0000 |
| __ | 1/4" | 15 psi @ 70° F | 0.5 | -20° to 250° | Fluorosilicone Rubber | Fluorosilicone Rubber | White/Black | 1 9/16" | 00000000 | 0000 |
| __ | 5/16" | 15 psi @ 70° F | 0.5 | -20° to 250° | Fluorosilicone Rubber | Fluorosilicone Rubber | White/Black | 1 9/16" | 00000000 | 0000 |
Unthreaded Male Inlet × Unthreaded Male Outlet | ||||||||||
| __ | 1/8" | 15 psi @ 70° F | 0.5 | -20° to 250° | Fluorosilicone Rubber | Fluorosilicone Rubber | Off-White | 1 5/8" | 00000000 | 0000 |
NPT Male Inlet × Barbed Male Outlet | ||||||||||
| 1/8 | 1/8" | 50 psi @ 65° F | 0.5 | -60° to 200° | Silicone Rubber | Silicone Rubber | Off-White | 1 3/8" | 0000000 | 0000 |
| 1/8 | 3/16" | 50 psi @ 65° F | 0.5 | -60° to 200° | Silicone Rubber | Silicone Rubber | Off-White | 1 9/16" | 0000000 | 0000 |
| 1/8 | 3/8" | 50 psi @ 65° F | 0.5 | -60° to 200° | Silicone Rubber | Silicone Rubber | Off-White | 1 5/8" | 0000000 | 0000 |
- 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 |
Check Valves with Quick-Turn Fittings
- For Use With: Air, Water
- Diaphragm Material: Silicone Rubber
- Seal Material: Silicone Rubber
Also known as luer lock couplings, quick-turn fittings consist of a plug and a socket that connect with a half turn, so you can easily connect and disconnect your line. These valves open to allow flow in one direction and close when flow stops or reverses. The clear body allows you to visually inspect flow and debris accumulation.
For technical drawings and 3-D models, click on a part number.
| Gender | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Polycarbonate Plastic Body | |||||||
|---|---|---|---|---|---|---|---|
Quick-Turn | |||||||
| Female Inlet × Female Outlet | 50 psi @ 65° F | 0.5 | -80° to 275° | Clear | 1" | 000000 | 00000 |
| Female Inlet × Male Outlet | 50 psi @ 65° F | 0.5 | -80° to 275° | Clear | 1 1/4" | 000000 | 0000 |
| Male Inlet × Male Outlet | 50 psi @ 65° F | 0.5 | -80° to 275° | Clear | 1 1/2" | 000000 | 0000 |
| Male Inlet × Female Outlet | 50 psi @ 65° F | 0.5 | -80° to 275° | Clear | 1 1/4" | 000000 | 0000 |
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.
PVDF valve resists abrasion and UV light.
Polypropylene valves are more corrosion resistant than nylon valves.
Nylon valves are more impact resistant than polypropylene 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, Butane, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Gasoline, Hydrochloric Acid, Nitric Acid, Oil, Propane, Salt Water, Soap Solutions, Sodium Hypochlorite, Sulfuric Acid, 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 × Barbed | |||||||
|---|---|---|---|---|---|---|---|
| 1/4" | 15 psi @ 70° F | 0.5 | -20° to 250° | White | 1 21/32" | 00000000 | 00000 |
- 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
- 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