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Body Material Body Material |
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For Use With For Use With | Show |
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For Use With For Use With | Hide |
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Warning: Products have one, but not necessarily all, of the selected characteristics.
Mounting Orientation Mounting Orientation |
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Color Color |
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 | Gray |
 | Light Gray |
Connection Style Connection Style |
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 | Threaded |
Gender Gender |
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 | Male |
Valve Type Valve Type |
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Actuation Actuation |
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Connection Type Connection Type |
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 | Pipe |
Check Valve Type Check Valve Type |
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Maximum Temperature Maximum Temperature |
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Shape Shape |
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 | Straight |
Maximum Pressure Maximum Pressure |
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Valve Function Valve Function |
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For Pipe Schedule For Pipe Schedule |
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Minimum Opening Pressure Minimum Opening Pressure |
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Environment Environment |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Flow Coefficient (Cv) Flow Coefficient (Cv) |
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About Backflow-Prevention Valves
More
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.
Diaphragm
- 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
| Pipe Size | For Pipe Schedule | Max. Pressure | Min. Opening Pressure, psi | End-to-End Lg. | Color | Temperature Range, °F | Each | |
PVC Plastic Body | ||||||||
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NPT Male × NPT Male | ||||||||
| 1/2 | 80 | 100 psi @ 75° F | 1 | 4 5/16" | Gray | 40° to 140° | 000000 | 0000000 |
| 3/4 | 80 | 100 psi @ 75° F | 1 | 4 5/8" | Gray | 40° to 140° | 0000000 | 000000 |
| 1 | 80 | 100 psi @ 75° F | 1 | 5 1/8" | Gray | 40° to 140° | 0000000 | 000000 |
CPVC Plastic Body | ||||||||
NPT Male × NPT Male | ||||||||
| 1/2 | 80 | 100 psi @ 75° F | 1 | 4 5/16" | Light Gray | 40° to 180° | 0000000 | 000000 |
| 3/4 | 80 | 100 psi @ 75° F | 1 | 4 5/8" | Light Gray | 40° to 180° | 0000000 | 000000 |
| 1 | 80 | 100 psi @ 75° F | 1 | 5 1/8" | Light Gray | 40° to 180° | 0000000 | 000000 |
Spring-Loaded Piston
- 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
- Piston Material:
PVC Plastic Body: PVC Plastic
CPVC Plastic Body: CPVC Plastic - Spring Material: Plastic Polymer
- Seal Material: Fluoroelastomer Rubber
| Pipe Size | For Pipe Schedule | Max. Pressure | Min. Opening Pressure, psi | End-to-End Lg. | Color | Temperature Range, °F | Each | |
PVC Plastic Body | ||||||||
|---|---|---|---|---|---|---|---|---|
NPT Male × NPT Male | ||||||||
| 1 1/2 | 80 | 100 psi @ 75° F | 1 | 7 15/16" | Gray | 40° to 140° | 0000000 | 0000000 |
| 2 | 80 | 100 psi @ 75° F | 1 | 8 1/2" | Gray | 40° to 140° | 0000000 | 000000 |
CPVC Plastic Body | ||||||||
NPT Male × NPT Male | ||||||||
| 1 1/2 | 80 | 100 psi @ 75° F | 1 | 7 15/16" | Light Gray | 40° to 180° | 0000000 | 000000 |
| 2 | 80 | 100 psi @ 75° F | 1 | 8 1/2" | Light Gray | 40° to 180° | 0000000 | 000000 |