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 | Straight |
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 | Threaded |
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About Backflow-Prevention Valves
More
Threaded Check Valves for Harsh Chemicals
These valves open to allow flow in one direction and close when flow stops or reverses.
Valves for drinking water meet NSF/ANSI Standard 61.
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.
PVC Plastic Body—Ball
- For Use With: Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Ethanol, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol, Mineral Spirits, Natural Gas, Oil, Oxygen, Phosphoric Acid, Potable Water, Propane, Salt Water, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Water
- Ball Material: PVC Plastic
- Seal Material: Fluoroelastomer Rubber
| DIN Size, mm | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Specifications Met | Each | |
Metric Female × Metric Female | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 65 | 170 | 150 psi @ 70° F | 1.5 | 35° to 140° | Dark Gray | 271mm | ASTM D1784, NSF/ANSI 61 | 0000000 | 0000000 |
| 80 | 250 | 150 psi @ 70° F | 1.5 | 35° to 140° | Dark Gray | 268mm | ASTM D1784, NSF/ANSI 61 | 0000000 | 000000 |
| 100 | 400 | 150 psi @ 70° F | 1.5 | 35° to 140° | Dark Gray | 329mm | ASTM D1784, NSF/ANSI 61 | 0000000 | 000000 |
CPVC Plastic Body—Ball
- For Use With: Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Mineral Spirits, Natural Gas, Nitric Acid, Oxygen, Phosphoric Acid, Potable Water, Propane, Salt Water, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Sulfuric Acid, Water
- Ball Material: CPVC Plastic
- Seal Material: Fluoroelastomer Rubber
| DIN Size, mm | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Specifications Met | Each | |
Metric Female × Metric Female | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 65 | 170 | 150 psi @ 70° F | 1.5 | 35° to 190° | Dark Gray | 271mm | ASTM D1784, NSF/ANSI 61 | 0000000 | 0000000 |
| 80 | 250 | 150 psi @ 70° F | 1.5 | 35° to 190° | Dark Gray | 268mm | ASTM D1784, NSF/ANSI 61 | 0000000 | 000000 |
| 100 | 400 | 150 psi @ 70° F | 1.5 | 35° to 190° | Dark Gray | 329mm | ASTM D1784, NSF/ANSI 61 | 0000000 | 000000 |
Polypropylene Plastic Body—Ball
- For Use With: Air, Ammonia, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Drinking Water, Ethanol, Ethylene Glycol, Isopropyl Alcohol, Kerosene, Methanol, Natural Gas, Oil, Oxygen, Phosphoric Acid, Potable Water, Salt Water, Soap Solutions, Sodium Hydroxide, Water
- Ball Material: Polypropylene Plastic
- Seal Material: Fluoroelastomer Rubber
| DIN Size, mm | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Specifications Met | Each | |
Metric Female × Metric Female | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 15 | 4.8 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 118mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| 20 | 7.7 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 121mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| 25 | 11 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 133mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| 40 | 45 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 171mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
| 50 | 130 | 150 psi @ 70° F | 1.5 | 35° to 200° | White | 203mm | ASTM D4101, NSF/ANSI 61 | 0000000 | 000000 |
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)