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Connection Style Connection Style | Show |
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 | Butt Weld |
Connection Style Connection Style | Hide |
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 | Threaded |
 | Barbed |
 | Flanged |
 | Socket Connect |
 | Push to Connect |
 | Yor-Lok |
 | Threaded Union |
 | Quick Clamp |
 | Solder Connect |
 | Quick Turn |
 | Clamp On |
| Butt Weld |
 | Unthreaded |
Body Material Body Material |
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Maximum Pressure Maximum Pressure |
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Mounting Orientation Mounting Orientation |
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Maximum Temperature Maximum Temperature |
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Valve Function Valve Function |
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Valve Type Valve Type |
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Specifications Met Specifications Met |
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Shape Shape |
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 | Straight |
Minimum Opening Pressure Minimum Opening Pressure |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Piston Material Piston Material |
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Spring Material Spring Material |
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For Pipe Schedule For Pipe Schedule |
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Seal Material Seal Material |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Minimum Temperature Minimum Temperature |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Backflow-Prevention Valves
More
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 | |||||||||
| 1/2 | 40 | 2.4 | 1,500 psi @ 100° F | 0.5 | -10° to 400° | 2 3/16" | ANSI/ASME B16.25 | 0000000 | 0000000 |
| 3/4 | 40 | 4.4 | 1,500 psi @ 100° F | 0.5 | -10° to 400° | 2 11/16" | ANSI/ASME B16.25 | 0000000 | 000000 |
| 1 | 40 | 6.1 | 1,500 psi @ 100° F | 0.5 | -10° to 400° | 2 15/16" | ANSI/ASME B16.25 | 0000000 | 000000 |
| 1 1/4 | 40 | 12.7 | 1,500 psi @ 100° F | 0.5 | -10° to 400° | 3 5/8" | ANSI/ASME B16.25 | 0000000 | 000000 |
| 1 1/2 | 40 | 18.8 | 1,500 psi @ 100° F | 0.5 | -10° to 400° | 3 15/16" | ANSI/ASME B16.25 | 0000000 | 000000 |
| 2 | 40 | 32 | 1,500 psi @ 100° F | 0.5 | -10° to 400° | 4 3/8" | ANSI/ASME B16.25 | 0000000 | 000000 |