About Backflow-Prevention Valves
More
Threaded Check Valves
These valves open to allow flow in one direction and close when flow stops or reverses.
Nickel-plated brass valves are more corrosion resistant than plain brass or bronze valves.
316 stainless steel valves have the best 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 Use With: See table
- Spring Material: See table
- Seal Material: See table
| Pipe Size  | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Spring Material | Seal Material | End-to-End Lg. | For Use With | Each | |
Brass Body—Brass Spring-Loaded Piston | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 0.6 | 500 psi @ 70° F | 1 | -20° to 180° | 302 Stainless Steel | Buna-N Rubber | 1 3/8" | Air; Argon; Helium; Krypton; Neon; Water; Xenon | 0000000 | 000000 |
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Spring Material: See table
- Seal Material: See table
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Spring Material | Seal Material | End-to-End Lg. | Each | |
Brass Body—Brass Spring-Loaded Piston | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 0.2 | 500 psi @ 70° F | 1 | -20° to 180° | 302 Stainless Steel | Buna-N Rubber | 1 3/16" | 0000000 | 000000 |
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Spring Material: 302 Stainless Steel
- Seal Material: See table
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Seal Material | End-to-End Lg. | Each | |
Brass Body—Brass Spring-Loaded Piston | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8 | 0.4 | 500 psi @ 70° F | 1 | -20° to 180° | Buna-N Rubber | 1 1/16" | 0000000 | 000000 |
316 Stainless Steel Body—316 Stainless Steel Spring-Loaded Piston | ||||||||
| 1/8 | 0.2 | 500 psi @ 70° F | 1 | -15° to 400° | Fluoroelastomer Rubber | 1 1/16" | 00000000 | 00000 |
- For Use With: See table
- Spring Material: See table
- Seal Material: See table
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Spring Material | Seal Material | End-to-End Lg. | For Use With | Each | |
Brass Body—Brass Spring-Loaded Piston | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 0.4 | 500 psi @ 70° F | 1 | -20° to 180° | 302 Stainless Steel | Buna-N Rubber | 1 1/4" | Air; Argon; Helium; Krypton; Neon; Water; Xenon | 0000000 | 000000 |
316 Stainless Steel Body—316 Stainless Steel Spring-Loaded Piston | ||||||||||
| 1/8 | 0.2 | 500 psi @ 70° F | 1 | -15° to 400° | 302 Stainless Steel | Fluoroelastomer Rubber | 1 1/4" | Air; Argon; Helium; Krypton; Neon; Water; Xenon | 00000000 | 00000 |
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Spring Material: 304 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Brass Body—Brass Spring-Loaded Piston | |||||||
|---|---|---|---|---|---|---|---|
| 1/8 | 1.1 | 1,000 psi @ 70° F | 0.3 | 10° to 400° | 2" | 0000000 | 000000 |
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Spring Material: 304 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Brass Body—Brass Spring-Loaded Piston | |||||||
|---|---|---|---|---|---|---|---|
| 1/8 | 1.1 | 1,000 psi @ 70° F | 0.3 | 10° to 400° | 1 1/4" | 0000000 | 000000 |
- For Use With: See table
- Spring Material: See table
- Seal Material: See table
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Spring Material | Seal Material | End-to-End Lg. | For Use With | Each | |
316 Stainless Steel Body—316 Stainless Steel Spring-Loaded Piston | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 1.85 | 580 psi @ 350° F | 150 psi @ 212° F | 4 | 0° to 355° | 302 Stainless Steel | Fluoroelastomer Rubber | 2" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 0000000 | 0000000 |
Compact Threaded Check Valves
- For Use With: Air, Nitrogen, Water
- Ball Material: 304 Stainless Steel
- Seal Material: See table
With a shorter end-to-end length than other check valves, these fit in tight spaces. They open to allow flow in one direction and close when flow stops or reverses.
303 stainless steel valves are more corrosion resistant than brass 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.
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Brass Body | |||||||
|---|---|---|---|---|---|---|---|
304 Stainless Steel Seal | |||||||
| 1/8 | 0.081 | 200 psi @ 70° F | 2 | 35° to 300° | 1" | 0000000 | 000000 |
304 Stainless Steel Seal with Loctite® Internal Sealant | |||||||
| 1/8 | 0.081 | 2,000 psi @ 70° F | 2 | 35° to 300° | 1" | 00000000 | 00000 |
303 Stainless Steel Body | |||||||
304 Stainless Steel Seal | |||||||
| 1/8 | 0.081 | 200 psi @ 70° F | 2 | 35° to 300° | 1" | 0000000 | 00000 |
304 Stainless Steel Seal with Loctite® Internal Sealant | |||||||
| 1/8 | 0.081 | 2,000 psi @ 70° F | 2 | 35° to 300° | 1" | 00000000 | 00000 |
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.
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
| 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 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8 | 1.1 | 125 psi @ 70° F | 1 | 30° to 140 | Dark Gray | 2 1/4" | 0000000 | 000000 |
NPT Female Inlet × NPT Male Outlet | ||||||||
| 1/8 | 1 | 125 psi @ 70° F | 1 | 30° to 140 | Dark Gray | 2 1/2" | 0000000 | 00000 |
NPT Male Inlet × NPT Male Outlet | ||||||||
| 1/8 | 0.9 | 125 psi @ 70° F | 1 | 30° to 140 | Dark Gray | 2 3/4" | 0000000 | 00000 |
High-Pressure Threaded Check Valves
These valves are rated for up to twice the pressure of standard check valves. They open to allow flow in one direction and close when flow stops or reverses.
316 stainless steel valves are more corrosion resistant than brass 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: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
NPT Female Inlet × NPT Female Outlet | |||||||
|---|---|---|---|---|---|---|---|
| 1/8 | 0.1 | 3,000 psi @ 70° F | 0.33 | -5° to 350° | 1 3/4" | 0000000 | 000000 |
High-Temperature Threaded Check Valves
The heat-resistant rubber seal withstands temperatures up to 500° F. These valves open to allow flow in one direction and close when flow stops or reverses.
Use bronze valves when corrosion is not a concern.
Repair kits include everything you need to rebuild the valve.
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.
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 Inlet Tube ID | Pipe Size | For Outlet Tube ID | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Barbed Male Inlet × NPT Male Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 1/8 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 2 5/8" | 0000000 | 000000 |
| 3/8" | 1/8 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/8" | 00000000 | 00000 |
NPT Male Inlet × Barbed Male Outlet | ||||||||||
| __ | 1/8 | 1/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 2 5/8" | 0000000 | 00000 |
| __ | 1/8 | 1/4" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/8" | 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 Use With: Air, Water
- Piston Material: Nylon Plastic
- Spring Material: 316 Stainless Steel
- Seal Material: Buna-N Rubber
| For Inlet Tube ID | Pipe Size | For Outlet Tube ID | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Barbed Male Inlet × NPT Male Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/16" | 1/8 | __ | Not Rated | Not Rated | 1 | -20° to 250° | White | 1 1/2" | 0000000 | 000000 |
NPT Male Inlet × Barbed Male Outlet | ||||||||||
| __ | 1/8 | 3/16" | Not Rated | Not Rated | 1 | -20° to 250° | White | 1 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 Inlet Tube ID | Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Barbed Male Inlet × NPT Male Outlet | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 1/8 | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 5/8" | 00000000 | 00000 |
Check Valves with Push-to-Connect Fittings
Insert tubing into the push-to-connect fittings—no heat, solder, or flux required. These valves open to allow flow in one direction and close when flow stops or reverses.
Acetal valves are more wear 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, Water
- Piston Material: Nylon Plastic
- Spring Material: See Table
- Seal Material: Buna-N Rubber
| Inlet Pipe Size | For Outlet Tube OD | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Spring Material | Color | End-to-End Lg. | Each | |
| 1/8 | 5/32" | Not Rated | 125 psi @ 70° F | 1 | 40° to 100° | 316 Stainless Steel | Gray | 1" | 0000000 | 000000 |
| 1/8 | 3/16" | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | 302 Stainless Steel | Gray | 1" | 00000000 | 00000 |
| 1/8 | 1/4" | Not Rated | 125 psi @ 70° F | 1 | 40° to 100° | 316 Stainless Steel | Gray | 7/8" | 0000000 | 00000 |
| 1/8 | 5/16" | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | 302 Stainless Steel | Gray | 1 1/16" | 00000000 | 00000 |
| 1/8 | 3/8" | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | 302 Stainless Steel | Gray | 1 1/4" | 00000000 | 00000 |
Push-to-Connect
Female Outlet 90° Elbow
- For Use With: Air, Water
- Piston Material: Nylon Plastic
- Spring Material: See Table
- Seal Material: Buna-N Rubber
| Inlet Pipe Size | For Outlet Tube OD | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Spring Material | Color | Port-to-Port Lg. | Each | |
| 1/8 | 5/32" | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | 302 Stainless Steel | Gray | 1 1/4" | 00000000 | 000000 |
| 1/8 | 3/16" | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | 302 Stainless Steel | Gray | 1 1/4" | 00000000 | 00000 |
| 1/8 | 1/4" | Not Rated | 125 psi @ 70° F | 1 | 40° to 100° | 316 Stainless Steel | Gray | 1 5/16" | 0000000 | 00000 |
| 1/8 | 5/16" | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | 302 Stainless Steel | Gray | 1 3/8" | 00000000 | 00000 |
- For Use With: Air, Water
- Piston Material: Nylon Plastic
- Spring Material: 302 Stainless Steel
- Seal Material: Buna-N Rubber
| For Inlet Tube OD | Outlet Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
| 5/32" | 1/8 | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | Gray | 1" | 00000000 | 000000 |
| 3/16" | 1/8 | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | Gray | 1" | 00000000 | 00000 |
| 1/4" | 1/8 | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | Gray | 7/8" | 00000000 | 00000 |
| 5/16" | 1/8 | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | Gray | 1 1/16" | 00000000 | 00000 |
| 3/8" | 1/8 | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | Gray | 1 1/4" | 00000000 | 00000 |
- For Use With: Air, Water
- Piston Material: Nylon Plastic
- Spring Material: 302 Stainless Steel
- Seal Material: Buna-N Rubber
| For Inlet Tube OD | Outlet Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | Port-to-Port Lg. | Each | |
| 5/32" | 1/8 | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | Gray | 1 1/4" | 00000000 | 000000 |
| 3/16" | 1/8 | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | Gray | 1 1/4" | 00000000 | 00000 |
| 1/4" | 1/8 | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | Gray | 1 3/8" | 00000000 | 00000 |
| 5/16" | 1/8 | 0.65 | 125 psi @ 70° F | 1 | -30° to 250° | Gray | 1 3/8" | 00000000 | 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.
Polycarbonate valves are clear so you can monitor your line.
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 | |
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 | 00000 |
| 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: 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 | |
NPT Male Inlet × Barbed Male Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 1/8" | 50 psi @ 65° F | 0.5 | 32° to 250° | Fluoroelastomer Rubber | Fluoroelastomer Rubber | Off-White | 1 3/8" | 000000000 | 00000 |
| 1/8 | 3/16" | 50 psi @ 65° F | 0.5 | 32° to 250° | Fluoroelastomer Rubber | Fluoroelastomer Rubber | Off-White | 1 1/2" | 000000000 | 0000 |
| 1/8 | 1/4" | 50 psi @ 65° F | 0.5 | 32° to 250° | Fluoroelastomer Rubber | Fluoroelastomer Rubber | Off-White | 1 1/2" | 000000000 | 0000 |
| 1/8 | 3/8" | 50 psi @ 65° F | 0.5 | 32° to 250° | Fluoroelastomer Rubber | Fluoroelastomer Rubber | Off-White | 1 5/8" | 000000000 | 0000 |
- For Use With: Air, Water
- Diaphragm Material: Silicone Rubber
- Seal Material: Silicone 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 Male Outlet | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8 | 1/8" | 50 psi @ 65° F | 0.5 | -80° to 275° | Clear | 1 3/8" | 000000000 | 00000 |
| 1/8 | 3/16" | 50 psi @ 65° F | 0.5 | -80° to 275° | Clear | 1 1/2" | 000000000 | 0000 |
| 1/8 | 1/4" | 50 psi @ 65° F | 0.5 | -80° to 275° | Clear | 1 1/2" | 000000000 | 0000 |
| 1/8 | 3/8" | 50 psi @ 65° F | 0.5 | -80° to 275° | Clear | 1 5/8" | 000000000 | 0000 |
Threaded Check Valves for Harsh Chemicals
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 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, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Natural Gas, Nitric Acid, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Sodium Hydroxide, Toluene, Water, Xylene
- Ball Material: 316 Stainless Steel
- Spring Material: 316 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 Male × NPT Male | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8 | Not Rated | 220 psi @ 70° F | 2.5 | 40° to 180° | White | 1" | 00000000 | 000000 |
Threaded Check Valves for Oil and Fuel
These valves open to allow flow in one direction and close when flow stops or reverses. They function both horizontally and vertically. When vertical, the flow arrow must point up.
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: Diesel Fuel, Gasoline, Oil
- Piston Material: Brass
- Spring Material: 302 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
NPT Female Inlet × NPT Female Outlet | |||||||
|---|---|---|---|---|---|---|---|
| 1/8 | 0.6 | 500 psi @ 70° F | 1 | -20° to 180° | 1 3/8" | 0000000 | 000000 |
NPT Female Inlet × NPT Male Outlet | |||||||
| 1/8 | 0.4 | 500 psi @ 70° F | 1 | -20° to 180° | 1 1/16" | 0000000 | 00000 |
NPT Male Inlet × NPT Male Outlet | |||||||
| 1/8 | 0.2 | 500 psi @ 70° F | 1 | -20° to 180° | 1 3/16" | 0000000 | 00000 |
NPT Male Inlet × NPT Female Outlet | |||||||
| 1/8 | 0.4 | 500 psi @ 70° F | 1 | -20° to 180° | 1 1/4" | 0000000 | 00000 |
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 technical drawings and 3-D models, click on a part number.
- For Use With: Diesel Fuel, Gasoline, Oil
- Ball Material: Stainless Steel
- Spring Material: 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 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8 | 1.1 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2 1/4" | 00000000 | 000000 |
NPT Male × NPT Female | ||||||||
| 1/8 | 1 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2 7/16" | 00000000 | 00000 |
NPT Male × NPT Male | ||||||||
| 1/8 | 0.9 | 125 psi @ 70° F | 0.33 | 35° to 140° | Black | 2 11/16" | 00000000 | 00000 |
Backflow-Prevention Inline Hydraulic Valves
Also known as check valves, these open to allow flow in one direction and close when flow stops or reverses.
Brass valves have good corrosion resistance. 303 stainless steel valves are more corrosion resistant than brass valves.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
Inlet Connection | Outlet Connection | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Dash Size | Pipe Size | Dash Size | Max. Flow Rate, gpm | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Port-to-Port Lg. | Hex Wd. | Mounting Orientation | Temp. Range, °F | Each | |
Brass Body | |||||||||||||
| 1/8 | 02 | 1/8 | 02 | 1.5 | 0.23 | 2,000 | 2.5 | 1 1/2" | 11/16" | Any Position | -15° to 400° | 0000000 | 000000 |
Steel Body | |||||||||||||
| 1/8 | 02 | 1/8 | 02 | 1.5 | 0.23 | 5,000 | 2.5 | 1 1/2" | 11/16" | Any Position | -15° to 400° | 0000000 | 00000 |
303 Stainless Steel Body | |||||||||||||
| 1/8 | 02 | 1/8 | 02 | 1.5 | 0.23 | 5,000 | 2.5 | 1 1/2" | 11/16" | Any Position | -15° to 400° | 0000000 | 00000 |
Inlet Connection | Outlet Connection | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Dash Size | Pipe Size | Dash Size | Max. Flow Rate, gpm | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Seal Material | Port-to-Port Lg. | Hex Wd. | Mounting Orientation | Temp. Range, °F | Each | |
Brass Body | ||||||||||||||
| 1/8 | 02 | 1/8 | 02 | 1 | 0.17 | 2,000 | 2.5 | __ | 1" | 7/16" | Any Position | -30° to 190° | 00000000 | 000000 |
| 1/8 | 02 | 1/8 | 02 | 1 | 0.17 | 2,000 | 2.5 | Buna-N Rubber | 1" | 7/16" | Any Position | -30° to 190° | 00000000 | 00000 |