About Backflow-Prevention Valves
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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 | Max. Steam Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Spring Material | Seal Material | End-to-End Lg. | For Use With | Each | |
Brass Body—Buna-N Rubber Spring-Loaded Piston | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 8 | 400 psi @ 70° F | __ | 2 | 35° to 225° | 302 Stainless Steel | Buna-N Rubber | 3 11/16" | Air; Argon; Helium; Krypton; Neon; Oil; Water; Xenon | 00000000 | 000000 |
Brass Body—304 Stainless Steel Spring-Loaded Piston | |||||||||||
1 | 12 | 400 psi @ 70° F | 125 psi @ 350° F | 2 | 35° to 350° | 302 Stainless Steel | 303 Stainless Steel | 3 11/16" | Air; Argon; Helium; Krypton; Neon; Oil; Steam; Water; Xenon | 0000000 | 00000 |
Nickel-Plated Brass Body—303 Stainless Steel Spring-Loaded Piston | |||||||||||
1 | 12 | 400 psi @ 70° F | 125 psi @ 350° F | 2 | 35° to 225° | 302 Stainless Steel | 303 Stainless Steel | 3 11/16" | Air; Argon; Helium; Krypton; Neon; Oil; Steam; Water; Xenon | 0000000 | 00000 |
Bronze Body—PTFE Plastic Spring-Loaded Ball | |||||||||||
1 | 6 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 3 1/2" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 00000 |
316 Stainless Steel Body—Fluoroelastomer Rubber Spring-Loaded Piston | |||||||||||
1 | 11.9 | 3,000 psi @ 70° F | __ | 1 | -5° to 350° | 316 Stainless Steel | Fluoroelastomer Rubber | 3 11/16" | Air; Argon; Helium; Krypton; Neon; Water; Xenon | 0000000 | 00000 |
316 Stainless Steel Body—316 Stainless Steel Spring-Loaded Ball | |||||||||||
1 | 6 | 400 psi @ 70° F | __ | 0.5 | -5° to 350° | 316 Stainless Steel | Fluoroelastomer Rubber | 3 1/2" | Air; Water | 00000000 | 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 | |
Bronze Body—PTFE Plastic Spring-Loaded Ball | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 6 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 3 7/8" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 000000 |
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Spring Material: 316 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
Inlet Pipe Size | Outlet Thread Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
316 Stainless Steel Body—Fluoroelastomer Rubber Spring-Loaded Piston | ||||||||
---|---|---|---|---|---|---|---|---|
1 | 1 5/16"-12 | 11.2 | 3,000 psi @ 70° F | 2 | -5° to 350° | 4 11/16" | 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 | |
Brass Body—Buna-N Rubber Spring-Loaded Piston | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 13 | 400 psi @ 70° F | __ | 2 | 35° to 225° | 302 Stainless Steel | Buna-N Rubber | 3 11/16" | Air; Argon; Helium; Krypton; Neon; Oil; Water; Xenon | 00000000 | 000000 |
316 Stainless Steel Body—Fluoroelastomer Rubber Spring-Loaded Piston | |||||||||||
1 | 11.2 | 3,000 psi @ 70° F | __ | 2 | -5° to 350° | 316 Stainless Steel | Fluoroelastomer Rubber | 3 11/16" | Air; Argon; Helium; Krypton; Neon; Water; Xenon | 0000000 | 00000 |
316 Stainless Steel Body—316 Stainless Steel Spring-Loaded Piston | |||||||||||
1 | 9.088 | 580 psi @ 350° F | 150 psi @ 212° F | 4 | 0° to 355° | 302 Stainless Steel | Fluoroelastomer Rubber | 3 9/16" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 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 | |
Brass Body—303 Stainless Steel Spring-Loaded Piston | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 12 | 400 psi @ 70° F | 125 psi @ 350° F | 2 | 35° to 350° | 302 Stainless Steel | 303 Stainless Steel | 3 11/16" | Air; Argon; Helium; Krypton; Neon; Oil; Steam; Water; Xenon | 00000000 | 000000 |
High-Flow Threaded Check Valves
To achieve the maximum possible flow, internal components are designed to reduce flow resistance. These valves open to allow flow in one direction and close when flow stops or reverses. A removable cap provides easy access to internal components for maintenance.
316 stainless steel valves are more corrosion resistant than bronze valves.
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.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon
- Disc Material: See table
- Seal Material: See table
Valves | Repair Kits | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Disc Material | Seal Material | End-to-End Lg. | Features | Each | Each | ||
NPT Female × NPT Female—Pressure Class 125 | |||||||||||||
1 | 31 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Brass | Brass | 3 1/4" | Removable Cap | 0000000 | 000000 | 0000000 | 000000 |
NPT Female × NPT Female—Pressure Class 150 | |||||||||||||
1 | 22 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Brass | Brass | 3 11/16" | Removable Cap | 0000000 | 000000 | 000000 | 00 |
NPT Female × NPT Female—Pressure Class 200 | |||||||||||||
1 | 22 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 3 11/16" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
NPT Female × NPT Female—Pressure Class 300 | |||||||||||||
1 | 22 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 3 11/16" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
- For Use With: Air, Steam, Water
- Disc Material: 316 Stainless Steel
- Seal Material: PTFE Plastic
Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Features | Each | |
NPT Female × NPT Female—Pressure Class Not Rated | |||||||||
---|---|---|---|---|---|---|---|---|---|
1 | 30 | 200 psi @ 70° F | 150 psi @ 350° F | 0.5 | -20° to 400° | 3 9/16" | Removable Cap | 00000000 | 0000000 |
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 | 4.48 | 2,000 psi @ 70° F | 0.33 | -5° to 350° | 4 1/4" | 0000000 | 0000000 |
High-Temperature Threaded Check Valves
Size Bronze Valves and 303
Stainless Steel 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.
303 stainless steel valves are more corrosion resistant than bronze valves.
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.
Valves | Repair Kits | ||||||||
---|---|---|---|---|---|---|---|---|---|
Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | Each | ||
Bronze Body | |||||||||
NPT Female × NPT Female | |||||||||
1 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 3 3/8" | 00000000 | 0000000 | 00000000 | 0000000 |
303 Stainless Steel Body | |||||||||
NPT Female × NPT Female | |||||||||
1 | 8 | 600 psi @ 70° F | 1 | 0° to 500° | 3 11/16" | 00000000 | 000000 | 00000000 | 00000 |
High-Cycling Threaded Check Valves
- For Use With: Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon
- Disc Material: Bronze
- Seal Material: See table
With few moving parts to wear out, these valves withstand frequent opening and closing, pulsating flow, and rapid flow reversal. They open to allow flow in one direction and close when flow stops or reverses. All have a removable cap that provides easy access to internal components for maintenance.
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 | Max. Steam Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Seal Material | End-to-End Lg. | Features | Each | |
Bronze Body | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | ||||||||||
1 | 8.86 | 1,000 psi @ 70° F | 520 psi @ 421° F | 2 | -20° to 450° | Bronze | 3 1/2" | Removable Cap | 0000000 | 0000000 |
1 | 8.86 | 200 psi @ 70° F | 175 psi @ 353° F | 2 | -20° to 405° | Bronze | 3 1/16" | Removable Cap | 0000000 | 000000 |
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.
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: 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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
3/4" | 1 | __ | Not Rated | Not Rated | 1 | -20° to 250° | White | 2 5/16" | 00000000 | 000000 |
NPT Male Inlet × Barbed Male Outlet | ||||||||||
__ | 1 | 3/4" | Not Rated | Not Rated | 1 | -20° to 250° | White | 2 5/16" | 00000000 | 00000 |
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 | Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
303 Stainless Steel Body | ||||||||
---|---|---|---|---|---|---|---|---|
1" | 1 | 11.9 | 300 psi @ 70° F | 2 | 30° to 300° | 4 1/4" | 000000 | 000000 |
Outlet | |||||||||
---|---|---|---|---|---|---|---|---|---|
Pipe Size | Barbed Connection Type | 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 | Barbed | 1" | 11.9 | 300 psi @ 70° F | 2 | 30° to 300° | 4 1/4" | 0000000 | 000000 |
Compact Flange-Mount Check Valves
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Piston Material: 316 Stainless Steel
- Spring Material: 316 Stainless Steel
- Seal Material: Viton® Fluoroelastomer
Less than half the end-to-end length of standard flange-mount check valves, these can be installed between ANSI flanges in pipelines with limited clearance. ANSI flanges are sold separately. Valves open to allow flow in one direction and close when flow stops or reverses. All have a 316 stainless steel body for 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.
Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | For Flange Class | Each | |
316 Stainless Steel Body | ||||||||
---|---|---|---|---|---|---|---|---|
Flanged × Flanged | ||||||||
1 | 6.1 | 720 psi @ 100° F | 0.5 | -10° to 400° | 1/4" | 150, 300 | 0000000 | 0000000 |
Socket-Connect Check Valves
- For Use With: Argon, Helium, Krypton, Neon, Steam, Water, Xenon
- Disc Material: 316 Stainless Steel
- Seal Material: PTFE Plastic
Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection. These valves open to allow flow in one direction and close when flow stops or reverses. The valve body is 316 stainless steel for excellent corrosion resistance. A removable cap provides easy access to internal components for maintenance.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Flow Coefficient (Cv) | Pressure Class | Max. Pressure | Max. Steam Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Features | Each | |
316 Stainless Steel Body | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Socket Connect × Socket Connect | ||||||||||
1 | 30 | 200 | 200 psi @ 70° F | 150 psi @ 350° F | 0.5 | -20° to 400° | 3 9/16" | Removable Cap | 0000000 | 0000000 |
Clear-View Socket-Connect Check Valves
- For Use With: Air, Water
- Piston Material: PVC Plastic
- Seal Material: EPDM Rubber
Visually inspect flow and debris accumulation through the transparent valve body. Insert unthreaded pipe into the socket ends and bond with primer and cement to create a permanent, leak-tight connection. These valves open to allow flow in one direction and close when flow stops or reverses. They have a removable cap that provides easy access to internal components for maintenance.
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 | For Pipe Schedule | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Features | Each | |
PVC Plastic Body | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Socket Connect × Socket Connect | ||||||||||
1 | 40, 80 | 21 | 150 psi @ 70° F | 0.29 | 35° to 140° | Clear | 6 7/8" | Removable Cap | 0000000 | 000000 |
Butt-Weld Check Valves
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Piston Material: 316 Stainless Steel
- Spring Material: 316 Stainless Steel
- Seal Material: Viton® Fluoroelastomer
Weld these valves to unthreaded pipe for a smooth, flush connection that provides maximum flow. All open to allow flow in one direction and close when flow stops or reverses. They have a 316 stainless steel body for 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.
Pipe Size | For Pipe Schedule | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Specifications Met | Each | |
316 Stainless Steel Body | |||||||||
---|---|---|---|---|---|---|---|---|---|
Butt Weld × Butt Weld | |||||||||
1 | 40 | 6.1 | 1,500 psi @ 100° F | 0.5 | -10° to 400° | 2 15/16" | ANSI/ASME B16.25 | 0000000 | 0000000 |
Union-Insert Check Valves
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Piston Material: 316 Stainless Steel
- Spring Material: 316 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
To reduce installation time and allow for maintenance without detaching pipe connections, these valves insert into a union fitting. Union fittings are sold separately. Valves open to allow flow in one direction and close when flow stops or reverses. Body is 316 stainless steel for 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.
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.
PVC and CPVC valves come with unthreaded socket-connect female fittings in addition to the threaded NPT female fittings.
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:
BSPP thread type:
Butane, Kerosene, Liquid Carbon Dioxide, Natural Gas, Nitric Acid, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Water
NPT thread type:
Citric Acid, Diesel Fuel, Drinking Water, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Sodium Hypochlorite, Water - Ball Material: PVC 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 | |
BSPP Female × BSPP Female | |||||||||
---|---|---|---|---|---|---|---|---|---|
1 | 25 | 150 psi @ 70° F | 1 | 40° to 140° | Dark Gray | 5 3/16" | ASTM D1784 | 0000000 | 0000000 |
NPT Female × NPT Female | |||||||||
1 | 11 | 150 psi @ 70° F | 1 | 40° to 140° | Dark Gray | 5 3/8" | ASTM D1784, NSF/ANSI 61 | 0000000 | 00000 |
- For Use With: Citric Acid, Diesel Fuel, Drinking Water, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Nitric Acid, Phosphoric Acid, Salt Water, Sodium Hypochlorite, Water
- Ball Material: CPVC 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 | 11 | 150 psi @ 70° F | 1 | 35° to 190° | Light Gray | 5 3/8" | ASTM D1784, NSF/ANSI 61 | 0000000 | 0000000 |
- For Use With: Air, Ammonia, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Ethanol, Ethylene Glycol, Isopropyl Alcohol, Kerosene, Methanol, Natural Gas, Oil, Oxygen, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide, 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 | 11 | 150 psi @ 70° F | 1 | 35° to 160° | White | 5 3/8" | ASTM D4101 | 0000000 | 0000000 |
Socket-Connect Check Valves for Harsh Chemicals
Insert unthreaded pipe into the socket ends and bond with primer and cement to create a permanent, leak-tight connection. These valves have a plastic body and a fluoroelastomer seal for excellent chemical resistance. They 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: Citric Acid, Deionized Water, Diesel Fuel, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Mineral Spirits, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Sodium Hypochlorite, Water
- Piston Material: PVC Plastic
- Spring Material: PVC Plastic
- Seal Material: Fluoroelastomer Rubber
Pipe Size | For Pipe Schedule | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Socket Connect × Socket Connect | |||||||||
---|---|---|---|---|---|---|---|---|---|
1 | 40, 80 | 9 | 150 psi @ 70° F | 2 | 40° to 140° | Dark Gray | 5 3/16" | 000000 | 0000000 |
- For Use With: Citric Acid, Deionized Water, Diesel Fuel, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Mineral Spirits, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Sodium Hypochlorite, Water
- Piston Material: CPVC Plastic
- Spring Material: CPVC Plastic
- Seal Material: Fluoroelastomer Rubber
Pipe Size | For Pipe Schedule | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Socket Connect × Socket Connect | |||||||||
---|---|---|---|---|---|---|---|---|---|
1 | 40, 80 | 9 | 150 psi @ 70° F | 2 | 40° to 190° | Light Gray | 5 3/16" | 0000000 | 0000000 |
Clear-View Socket-Connect Check Valves for Harsh Chemicals
- For Use With: Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Hydrochloric Acid, Methanol, Nitric Acid, Phosphoric Acid, Salt Water, Sulfuric Acid, Water
- Piston Material: PVC Plastic
- Seal Material: Fluoroelastomer Rubber
Visually inspect flow and debris accumulation through the transparent valve body. Insert unthreaded pipe into the socket ends and bond with primer and cement to create a permanent, leak-tight connection. Valves have a PVC body and a fluoroelastomer seal for excellent chemical resistance. They open to allow flow in one direction and close when flow stops or reverses. All have a removable cap that provides easy access to internal components for maintenance.
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 | For Pipe Schedule | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Features | Each | |
PVC Plastic Body | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Socket Connect × Socket Connect | ||||||||||
1 | 40, 80 | 21 | 150 psi @ 70° F | 0.29 | 35° to 140° | Clear | 6 7/8" | Removable Cap | 0000000 | 0000000 |
Flanged Check Valves for Harsh Chemicals
- For Use With: Ammonia, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol, Methyl Ethyl Ketone, Mineral Spirits, Oil, Phosphoric Acid, Salt Water, Soap Solutions, Toluene, Water, Xylene
- Ball Material: PTFE Plastic
- Seal Material: PTFE Plastic
Bolt these valves to ANSI flanges. The glass-filled vinyl body and PTFE seal stand up to a wide range of harsh chemicals. 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.
Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | For Flange Class | Flange OD | Number of Bolt Holes | Bolt Hole Size | Bolt Circle Dia. | Bolts Included | Each | |
Glass-Filled Vinyl Plastic Body | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flanged × Flanged | ||||||||||||||
1 | 35 | 210 psi @ 250 ° F | 1 | -40° to 250° | Beige | 5" | 150 | 4 1/4" | 4 | 5/8" | 3 1/8" | No | 000000 | 0000000 |
Threaded Check Valves for Drinking Water
These valves meet NSF/ANSI 61 for drinking water service. They open to allow flow in one direction and close when flow stops or reverses.
Spring-loaded piston check valves reduce slamming and vibration in quick shut-off applications.
Swing check valves create less flow resistance than spring-loaded piston check valves.
Clear valves let you visually inspect flow and debris accumulation.
For technical drawings and 3-D models, click on a part number.
- For Use With: Drinking Water
- Piston Material: PVC Plastic
- Spring Material: 302 Stainless Steel
- Seal Material: EPDM Rubber
White | ||||||
---|---|---|---|---|---|---|
Pipe Size | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
NPT Female × NPT Female | ||||||
1 | 150 psi @ 70° F | 0.5 | 35° to 140° | 5 1/4" | 00000000 | 000000 |
Heavy Duty Threaded Check Valves for Drinking Water
- For Use With: Drinking Water
- Piston Material: Polyetherimide Plastic
- Spring Material: 302 Stainless Steel
- Seal Material: Buna-N Rubber
For more durability than plastic, these valves have a metal body. They meet NSF/ANSI 61 for drinking water service. All 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.
Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Brass Body | |||||||
---|---|---|---|---|---|---|---|
NPT Female × NPT Female | |||||||
1 | 16.9 | 400 psi @ 170° F | 0.5 | 10° to 210° | 2 7/8" | 0000000 | 000000 |
Socket-Connect Check Valves for Drinking Water
Insert unthreaded pipe into the socket ends and bond with primer and cement to create a permanent, leak-tight connection. These valves meet NSF/ANSI 61, which means they’re safe to use with drinking water. They open to allow flow in one direction and close when flow stops or reverses.
Spring-loaded piston check valves reduce slamming and vibration in quick shut-off applications.
Swing check valves create less flow resistance than spring-loaded piston check valves.
Clear valves let you visually inspect flow and debris accumulation.
For technical drawings and 3-D models, click on a part number.
- For Use With: Drinking Water
- Piston Material: PVC Plastic
- Spring Material: 302 Stainless Steel
- Seal Material: EPDM Rubber
White | |||||||
---|---|---|---|---|---|---|---|
Pipe Size | For Pipe Schedule | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Socket Connect × Socket Connect | |||||||
1 | 40 | 150 psi @ 70° F | 0.5 | 35° to 140° | 5 1/4" | 00000000 | 000000 |
High-Performance Threaded Check Valves for Fuel
These heavy duty valves can withstand pressures up to 1,975 psi and temperatures up to 800° F. They open to allow flow in one direction and close when flow stops or reverses. All have a removable cap that provides easy access to internal components for maintenance.
Spring-loaded ball check valves resist sticking and clogging better than spring-loaded piston check 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: Diesel Fuel, Natural Gas
- Piston Material: 420 Stainless Steel
- Spring Material: 304 Stainless Steel
- Seal Material: 304 Stainless Steel, Graphite
Pipe Size | Flow Coefficient (Cv) | Pressure Class | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Features | Each | |
NPT Female × NPT Female | |||||||||
---|---|---|---|---|---|---|---|---|---|
1 | 5.08 | 800 | 1,975 psi @ 100° F | 45 | -20° to 800° | 4 3/8" | Removable Cap | 0000000 | 0000000 |
- For Use With: Diesel Fuel, Natural Gas
- Ball Material: 304 Stainless Steel
- Spring Material: 304 Stainless Steel
- Seal Material: 304 Stainless Steel, Graphite
Pipe Size | Flow Coefficient (Cv) | Pressure Class | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Features | Each | |
NPT Female × NPT Female | |||||||||
---|---|---|---|---|---|---|---|---|---|
1 | 5.08 | 800 | 1,975 psi @ 100° F | 107 | -20° to 800° | 4 3/8" | Removable Cap | 0000000 | 0000000 |
High-Temperature Threaded Check Valves for Oil and Fuel
- For Use With: Butane, Diesel Fuel, Fuel Oil, Natural Gas, Propane
- Piston Material: Brass
- Spring Material: 316 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
For more than twice the temperature rating of standard check valves for oil and fuel, these have a heat-resistant fluoroelastomer seal that can withstand temperatures up to 500° F. They 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.
Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Bronze Body | |||||||
---|---|---|---|---|---|---|---|
NPT Female × NPT Female | |||||||
1 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 3 3/8" | 0000000 | 0000000 |
Socket-Connect Check Valves for Oil and Fuel
Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection. These heavy duty valves can withstand pressures up to 1,975 psi and temperatures up to 800° F. They open to allow flow in one direction and close when flow stops or reverses. A removable cap provides easy access to internal components for maintenance.
Spring-loaded ball check valves resist sticking and clogging better than spring-loaded piston check 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: Diesel Fuel, Gasoline, Natural Gas, Oil
- Piston Material: 420 Stainless Steel
- Spring Material: 304 Stainless Steel
- Seal Material: 304 Stainless Steel, Graphite
Pipe Size | Flow Coefficient (Cv) | Pressure Class | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Features | Each | |
Socket Connect × Socket Connect | |||||||||
---|---|---|---|---|---|---|---|---|---|
1 | 5.08 | 800 | 1,975 psi @ 100° F | 45 | -20° to 800° | 4 3/8" | Removable Cap | 0000000 | 0000000 |
- For Use With: Diesel Fuel, Natural Gas
- Ball Material: 304 Stainless Steel
- Spring Material: 304 Stainless Steel
- Seal Material: 304 Stainless Steel, Graphite
Pipe Size | Flow Coefficient (Cv) | Pressure Class | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Features | Each | |
Socket Connect × Socket Connect | |||||||||
---|---|---|---|---|---|---|---|---|---|
1 | 5.08 | 800 | 1,975 psi @ 100° F | 107 | -20° to 800° | 4 3/8" | Removable Cap | 0000000 | 0000000 |
Check Valves for Steam
- For Use With: Steam
- Ball Material: PTFE Plastic
- Spring Material: 316 Stainless Steel
- Seal Material: PTFE Plastic
To withstand high pressures and temperatures in steam service applications, these valves have a 316 stainless steel body, PTFE ball, and PTFE seal. They open to allow flow in one direction and close when flow stops or reverses.
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.
For technical drawings and 3-D models, click on a part number.
Threaded Two-Stage Backflow-Prevention Valves for Drinking Water
- For Use With: Drinking Water
- Seal Material: EPDM Rubber
Keep backflow from contaminating your drinking water supply—these valves meet NSF/ANSI 61 for use with drinking water. They consist of a primary check valve and a secondary check valve. If the primary check fails to close when flow stops or reverses, the secondary check valve engages to prevent backflow.
Single-union valves have a union fitting on one end.
Double-union valves have a union fitting on both ends.
For technical drawings and 3-D models, click on a part number.
Easy-Maintenance Threaded Two-Stage
Backflow-Prevention Valves for Drinking Water
- For Use With: Drinking Water
- Seal Material: Buna-N Rubber
Integral shutoff valves isolate flow for inline maintenance, and a top-entry cover provides easy access to internal components. These valves meet NSF/ANSI 61 for use with drinking water. For maximum protection from system contamination, they consist of a primary check valve and a secondary check valve. If the first check fails to close when flow stops or reverses, the secondary check valve engages to prevent backflow. A strainer prevents debris from blocking the check valves.
Reduced-pressure-zone valves have a relief valve that discharges backflow if both check valves fail. Valves with an air inlet provide high-capacity relief in emergency conditions. If both check valves fail, the inlet introduces air to quickly displace liquid for faster discharge through the relief valve.
Pipe Size | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Features | Specifications Met | Each | |
Bronze Body—Dual-Check Valve | ||||||||
---|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | ||||||||
1 | 175 psi @ 180° F | 30 | 35° to 180° | 17" | Strainer | ASSE 1015, CSA Certified, NSF/ANSI 61, USC Foundation Approved | 0000000 | 0000000 |
Bronze Body—Reduced-Pressure-Zone Valve | ||||||||
NPT Female × NPT Female | ||||||||
1 | 175 psi @ 140° F | 30 | 35° to 140° | 19 5/8" | Air Inlet, Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 0000000 | 00000000 |
1 | 175 psi @ 180° F | 30 | 35° to 180° | 18 1/4" | Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 00000000 | 000000 |
Vacuum-Breaking Valves
Also known as vacuum breakers, these valves have vents that open when pressure drops to relieve vacuum conditions and prevent backward suction from drawing liquid into upstream piping.
303 stainless steel valves have the best corrosion resistance.
Elbows are designed for intermittent flow. They discharge liquid directly and should not be installed in areas where spillage could cause damage.
Straights are often used with steam coils, heat exchangers, and space heaters.
For technical drawings and 3-D models, click on a part number.
- For Use With: Water
- Seal Material: Silicone Rubber
Brass Body | |||||
---|---|---|---|---|---|
Pipe Size | Max. Pressure | Temperature Range, °F | Port-to-Port Lg. | Each | |
NPT Female Inlet × NPT Female Outlet | |||||
1 | 125 psi @ 70° F | 35° to 180° | 1 5/8" | 00000000 | 000000 |
- For Use With: Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon
- Seal Material: EPR Rubber
Inlet Pipe Size | Outlet Pipe Size | Max. Pressure | Temperature Range, °F | End-to-End Lg. | Body Material | Each | |
Brass Body | |||||||
---|---|---|---|---|---|---|---|
NPT Male Inlet × NPT Female Outlet | |||||||
1 | 3/4 | 300 psi @ 70° F | -20° to 365° | 2 3/8" | Brass | 0000000 | 0000000 |
303 Stainless Steel Body | |||||||
NPT Male Inlet × NPT Female Outlet | |||||||
1 | 3/4 | 300 psi @ 70° F | -20° to 365° | 2 3/8" | 303 Stainless Steel | 0000000 | 000000 |
High-Pressure Vacuum-Breaking Valves
- For Use With: Air, Argon, Helium, Krypton, Neon, Oil, Water, Xenon
- Seal Material: Fluoroelastomer Rubber
Rated for 12 times the pressure of standard vacuum-breaking valves, these can handle up to 1,500 psi. Also known as vacuum breakers, they have vents that open when pressure drops to relieve vacuum conditions and prevent backward suction from drawing liquid into upstream piping. Body is 316 stainless steel for 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.
Outlet Pipe Size | Inlet Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | End-to-End Lg. | Each | |
316 Stainless Steel Body | |||||||
---|---|---|---|---|---|---|---|
NPT Male × NPT Female | |||||||
1 | 3/4 | 6.6 | 1,500 psi @ 70° F | -10° to 400° | 1 7/8" | 0000000 | 0000000 |
Vacuum-Breaking Valves for Chemicals
A plastic body withstands pH neutralizing, cleaning, and plating solutions containing sodium hydroxide, methyl ethyl ketone, and other harsh chemicals. Also known as vacuum breakers, these valves have vents that open when pressure drops to relieve vacuum conditions and prevent backward suction from drawing liquid into upstream piping.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Ammonia, Argon, Beverage, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Food, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol, Methyl Ethyl Ketone, Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Water, Xenon
- Diaphragm Material: Fluoroelastomer Rubber
- Seal Material: Fluoroelastomer Rubber
Pipeline Flame Arresters
- For Use With: Butane, Natural Gas, Propane
- Flame-Arresting Element Material: 316 Stainless Steel
To prevent flashback in flammable gas pipelines, an internal flame-arresting element absorbs the heat from a fire to extinguish the flame. These valves are commonly used in pilot lines connected to waste gas burners.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Max. Pressure | Max. Temperature, °F | End-to-End Lg. | Each | |
Aluminum Body | |||||
---|---|---|---|---|---|
NPT Female | |||||
1 | 25 psi @ 176° F | 176° | 3 3/4" | 0000000 | 0000000 |