About Backflow-Prevention Valves
More
Threaded Check Valves
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: 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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 0.85 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 2 1/16" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 000000 |
| 3/8 | 1.21 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 2 1/8" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 00000 |
| 1/2 | 1.4 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 2 5/16" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 00000 |
| 3/4 | 3.53 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 2 7/8" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 00000 |
| 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 |
| 1 1/4 | 44 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 4 3/16" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 000000 |
| 1 1/2 | 65 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 4 15/16" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 000000 |
| 2 | 81 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 6" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 0.85 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 2 3/8" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 000000 |
| 3/8 | 1.21 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 2 3/8" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 00000 |
| 1/2 | 1.4 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 2 9/16" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 00000 |
| 3/4 | 3.53 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 3 1/8" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 00000 |
| 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 | 00000 |
| 1 1/4 | 44 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 4 7/16" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 000000 |
| 1 1/2 | 65 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 5 3/16" | Air; Argon; Helium; Krypton; Neon; Steam; Water; Xenon | 00000000 | 000000 |
| 2 | 81 | 400 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | Stainless Steel | PTFE Plastic | 6 1/2" | Air; Argon; Helium; Krypton; Neon; 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.
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 | |||||||||||||
| 1/4 | 3.3 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Brass | Brass | 2 1/8" | Removable Cap | 0000000 | 000000 | 0000000 | 000000 |
| 3/8 | 6 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Brass | Brass | 2 1/8" | Removable Cap | 0000000 | 00000 | 0000000 | 00000 |
| 1/2 | 10 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Brass | Brass | 2 5/16" | Removable Cap | 0000000 | 00000 | 0000000 | 00000 |
| 3/4 | 18 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Brass | Brass | 2 5/8" | Removable Cap | 0000000 | 00000 | 0000000 | 00000 |
| 1 | 31 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Brass | Brass | 3 1/4" | Removable Cap | 0000000 | 00000 | 0000000 | 00000 |
| 1 1/4 | 54 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Brass | Brass | 3 9/16" | Removable Cap | 0000000 | 000000 | 0000000 | 00000 |
| 1 1/2 | 76 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Brass | Brass | 4" | Removable Cap | 0000000 | 000000 | 0000000 | 00000 |
| 2 | 131 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Bronze | Bronze | 4 3/4" | Removable Cap | 0000000 | 000000 | 0000000 | 000000 |
| 2 1/2 | 192 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Bronze | Bronze | 6" | Removable Cap | 0000000 | 000000 | 0000000 | 000000 |
| 3 | 297 | 200 psi @ 150° F | 125 psi @ 353° F | 0.5 | -20° to 405° | Bronze | Bronze | 6 7/8" | Removable Cap | 0000000 | 000000 | 0000000 | 000000 |
NPT Female × NPT Female—Pressure Class 150 | |||||||||||||
| 1/4 | 2.3 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Bronze | Bronze | 2 1/4" | Removable Cap | 0000000 | 00000 | 000000 | 00 |
| 3/8 | 4.3 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Bronze | Bronze | 2 1/4" | Removable Cap | 0000000 | 00000 | 000000 | 00 |
| 1/2 | 7.2 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Brass | Brass | 2 5/8" | Removable Cap | 0000000 | 00000 | 000000 | 00 |
| 3/4 | 13 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Brass | Brass | 3" | Removable Cap | 0000000 | 000000 | 000000 | 00 |
| 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 |
| 1 1/4 | 39 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Brass | Brass | 4 3/8" | Removable Cap | 0000000 | 000000 | 000000 | 00 |
| 1 1/2 | 56 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Brass | Brass | 4 5/8" | Removable Cap | 0000000 | 000000 | 000000 | 00 |
| 2 | 92 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Bronze | Bronze | 5 7/8" | Removable Cap | 0000000 | 000000 | 000000 | 00 |
| 2 1/2 | 150 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Bronze | Bronze | 7" | Removable Cap | 0000000 | 000000 | 000000 | 00 |
| 3 | 240 | 300 psi @ 150° F | 150 psi @ 366° F | 0.5 | -20° to 405° | Bronze | Bronze | 7 7/8" | Removable Cap | 0000000 | 00000000 | 000000 | 00 |
NPT Female × NPT Female—Pressure Class 200 | |||||||||||||
| 1/4 | 2.3 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 2 1/4" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
| 3/8 | 4.3 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 2 1/4" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
| 1/2 | 7.2 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 2 5/8" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
| 3/4 | 13 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 3" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
| 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 |
| 1 1/4 | 39 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 4 3/8" | Removable Cap | 0000000 | 000000 | 00000000 | 000000 |
| 1 1/2 | 56 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 4 5/8" | Removable Cap | 0000000 | 000000 | 00000000 | 000000 |
| 2 | 92 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 5 7/8" | Removable Cap | 0000000 | 000000 | 00000000 | 000000 |
| 2 1/2 | 150 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 7" | Removable Cap | 0000000 | 000000 | 00000000 | 000000 |
NPT Female × NPT Female—Pressure Class 300 | |||||||||||||
| 1/4 | 2.3 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 2 1/4" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
| 3/8 | 4.3 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 2 1/4" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
| 1/2 | 7.2 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 2 5/8" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
| 3/4 | 13 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 3" | Removable Cap | 0000000 | 000000 | 00000000 | 00000 |
| 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 |
| 1 1/4 | 39 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 4 3/8" | Removable Cap | 0000000 | 000000 | 00000000 | 000000 |
| 1 1/2 | 56 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 4 5/8" | Removable Cap | 0000000 | 000000 | 00000000 | 000000 |
| 2 | 92 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 5 7/8" | Removable Cap | 0000000 | 000000 | 00000000 | 000000 |
| 2 1/2 | 150 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 7" | Removable Cap | 0000000 | 00000000 | 00000000 | 000000 |
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.
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 | |||||||||
| 1/8 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 2 1/4" | 00000000 | 000000 | 00000000 | 000000 |
| 1/4 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 2 1/4" | 00000000 | 00000 | 00000000 | 00000 |
| 3/8 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 2 1/4" | 00000000 | 00000 | 00000000 | 00000 |
| 1/2 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 2 1/2" | 00000000 | 000000 | 00000000 | 00000 |
| 3/4 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 2 3/4" | 00000000 | 000000 | 00000000 | 00000 |
| 1 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 3 3/8" | 00000000 | 000000 | 00000000 | 000000 |
| 1 1/4 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 3 3/4" | 00000000 | 000000 | 00000000 | 000000 |
| 1 1/2 | 38 | 400 psi @ 70° F | 1 | 0° to 500° | 4 7/8" | 00000000 | 000000 | 00000000 | 00000 |
| 2 | 59 | 400 psi @ 70° F | 1 | 0° to 500° | 5 9/16" | 00000000 | 000000 | 00000000 | 00000 |
| 2 1/2 | 69 | 400 psi @ 70° F | 1 | 0° to 500° | 6 3/4" | 00000000 | 000000 | 00000000 | 00000 |
| 3 | 185 | 400 psi @ 70° F | 1 | 0° to 500° | 7 3/8" | 00000000 | 000000 | 00000000 | 000000 |
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 | ||||||||||
| 1/2 | 2.87 | 1,000 psi @ 70° F | 520 psi @ 421° F | 2 | -20° to 450° | Bronze | 2 9/16" | Removable Cap | 0000000 | 0000000 |
| 1/2 | 2.87 | 200 psi @ 70° F | 175 psi @ 353° F | 2 | -20° to 405° | Brass | 2 3/16" | Removable Cap | 0000000 | 000000 |
| 3/4 | 5.24 | 1,000 psi @ 70° F | 520 psi @ 421° F | 2 | -20° to 450° | Bronze | 3" | Removable Cap | 0000000 | 000000 |
| 3/4 | 5.24 | 200 psi @ 70° F | 175 psi @ 353° F | 2 | -20° to 405° | Bronze | 2 1/2" | Removable Cap | 0000000 | 000000 |
| 1 | 8.86 | 1,000 psi @ 70° F | 520 psi @ 421° F | 2 | -20° to 450° | Bronze | 3 1/2" | Removable Cap | 0000000 | 000000 |
| 1 | 8.86 | 200 psi @ 70° F | 175 psi @ 353° F | 2 | -20° to 405° | Bronze | 3 1/16" | Removable Cap | 0000000 | 000000 |
| 1 1/4 | 15.67 | 1,000 psi @ 70° F | 520 psi @ 421° F | 2 | -20° to 450° | Bronze | 4 1/16" | Removable Cap | 0000000 | 000000 |
| 1 1/4 | 15.67 | 200 psi @ 70° F | 175 psi @ 353° F | 2 | -20° to 405° | Bronze | 3 5/8" | Removable Cap | 0000000 | 000000 |
| 1 1/2 | 21.83 | 1,000 psi @ 70° F | 520 psi @ 421° F | 2 | -20° to 450° | Bronze | 4 5/8" | Removable Cap | 0000000 | 000000 |
| 1 1/2 | 21.83 | 200 psi @ 70° F | 175 psi @ 353° F | 2 | -20° to 405° | Bronze | 3 7/8" | Removable Cap | 0000000 | 000000 |
| 2 | 37.84 | 1,000 psi @ 70° F | 520 psi @ 421° F | 2 | -20° to 450° | Bronze | 5 3/4" | Removable Cap | 0000000 | 00000000 |
| 2 | 37.84 | 200 psi @ 70° F | 175 psi @ 353° F | 2 | -20° to 405° | Bronze | 4 11/16" | Removable Cap | 0000000 | 000000 |
Check Valves with Solder-Connect Fittings
- For Use With: Steam, Water
- Disc Material: Bronze
- Seal Material: Bronze
Solder these valves to copper tubing for a permanent, leak-tight connection. 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.
| For Copper Tube Size | For Tube OD | Flow Coefficient (Cv) | Pressure Class | Max. Pressure | Max. Steam Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Features | Each | |
Bronze Body | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Solder Connect × Solder Connect | |||||||||||
| 1/4 | 3/8" | 1.3 | 125 | 200 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | 2 1/16" | Removable Cap | 0000000 | 000000 |
| 3/8 | 1/2" | 2.5 | 125 | 200 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | 2 1/16" | Removable Cap | 0000000 | 00000 |
| 1/2 | 5/8" | 4.8 | 125 | 200 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | 2 9/16" | Removable Cap | 0000000 | 00000 |
| 3/4 | 7/8" | 14.3 | 125 | 200 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | 3 3/8" | Removable Cap | 0000000 | 000000 |
| 1 | 1 1/8" | 24 | 125 | 200 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | 4 1/16" | Removable Cap | 0000000 | 000000 |
| 1 1/2 | 1 5/8" | 60 | 125 | 200 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | 5 1/4" | Removable Cap | 0000000 | 000000 |
| 2 | 2 1/8" | 102 | 125 | 200 psi @ 70° F | 125 psi @ 350° F | 0.5 | -20° to 405° | 6 3/8" | Removable Cap | 0000000 | 000000 |
Heavy Duty Check Valves with Push-to-Connect Fittings for Drinking Water
A metal body provides more durability than plastic. Insert tubing into the push-to-connect fittings—no heat, solder, or flux required. These valves meet NSF/ANSI 61 for use in drinking water systems. 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: Drinking Water, Steam
- Ball Material: PTFE Plastic
- Spring Material: 316 Stainless Steel
- Seal Material: EPDM Rubber
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Push to Connect × Push to Connect | ||||||||
|---|---|---|---|---|---|---|---|---|
| 5/8" | 1.4 | 400 psi @ 350° F | 125 psi @ 212° F | 0.5 | 0° to 250° | 4 1/2" | 000000 | 000000 |
| 7/8" | 3.5 | 400 psi @ 350° F | 125 psi @ 212° F | 0.5 | 0° to 250° | 5 1/4" | 0000000 | 00000 |
| 1 1/8" | 6 | 400 psi @ 350° F | 125 psi @ 212° F | 0.5 | 0° to 250° | 6 5/16" | 0000000 | 000000 |
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 | |||||||
| 1/4 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 2 1/4" | 0000000 | 000000 |
| 3/8 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 2 1/4" | 0000000 | 00000 |
| 1/2 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 2 1/2" | 0000000 | 000000 |
| 3/4 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 2 3/4" | 0000000 | 000000 |
| 1 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 3 3/8" | 0000000 | 000000 |
| 1 1/4 | Not Rated | 300 psi @ 70° F | 2 | 50° to 500° | 3 3/4" | 0000000 | 000000 |
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 | ||||||||
| 1/2 | 175 psi @ 180° F | 30 | 35° to 180° | 12 3/4" | Strainer | ASSE 1015, CSA Certified, NSF/ANSI 61, USC Foundation Approved | 0000000 | 0000000 |
| 3/4 | 175 psi @ 180° F | 30 | 35° to 180° | 14 5/16" | Strainer | ASSE 1015, CSA Certified, NSF/ANSI 61, USC Foundation Approved | 0000000 | 000000 |
| 1 | 175 psi @ 180° F | 30 | 35° to 180° | 17" | Strainer | ASSE 1015, CSA Certified, NSF/ANSI 61, USC Foundation Approved | 0000000 | 000000 |
| 1 1/2 | 175 psi @ 180° F | 30 | 35° to 180° | 21 5/8" | Strainer | ASSE 1015, CSA Certified, NSF/ANSI 61, USC Foundation Approved | 0000000 | 000000 |
| 2 | 175 psi @ 180° F | 30 | 35° to 180° | 24 13/16" | Strainer | ASSE 1015, CSA Certified, NSF/ANSI 61, USC Foundation Approved | 0000000 | 00000000 |
Bronze Body—Reduced-Pressure-Zone Valve | ||||||||
NPT Female × NPT Female | ||||||||
| 1/2 | 175 psi @ 180° F | 30 | 35° to 180° | 12 3/4" | Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 00000000 | 000000 |
| 3/4 | 175 psi @ 140° F | 30 | 35° to 140° | 18 1/16" | Air Inlet, Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 0000000 | 00000000 |
| 3/4 | 175 psi @ 180° F | 30 | 35° to 180° | 16 15/16" | Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 00000000 | 000000 |
| 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 |
| 1 1/4 | 175 psi @ 180° F | 30 | 35° to 180° | 21 13/16" | Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 00000000 | 00000000 |
| 1 1/2 | 175 psi @ 180° F | 30 | 35° to 180° | 22 3/4" | Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 00000000 | 00000000 |
| 2 | 175 psi @ 180° F | 30 | 35° to 180° | 26 11/16" | Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 00000000 | 00000000 |
NPT Male × NPT Male | ||||||||
| 1 1/2 | 175 psi @ 140° F | 30 | 35° to 140° | 24 3/8" | Air Inlet, Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 0000000 | 00000000 |
| 2 | 175 psi @ 140° F | 30 | 35° to 140° | 25 15/16" | Air Inlet, Relief Valve, Strainer | ASSE 1013, NSF/ANSI 61, USC Foundation Approved | 0000000 | 00000000 |
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.
Chrome-plated bronze valves are more corrosion resistant than brass valves.
Elbows are designed for intermittent flow. They discharge liquid directly and should not be installed in areas where spillage could cause damage.
- For Use With: Water
- Seal Material: Silicone Rubber
Chrome-Plated Bronze Body | |||||
|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Temperature Range, °F | Port-to-Port Lg. | Each | |
NPT Female Inlet × NPT Female Outlet | |||||
| 1/4 | 125 psi @ 70° F | 35° to 180° | 1" | 0000000 | 000000 |
| 3/8 | 125 psi @ 70° F | 35° to 180° | 1" | 0000000 | 00000 |
| 1/2 | 125 psi @ 70° F | 35° to 180° | 1 1/4" | 0000000 | 00000 |
| 3/4 | 125 psi @ 70° F | 35° to 180° | 1 1/2" | 0000000 | 00000 |