About Pressure-Relief Valves
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About Backflow-Prevention Valves
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About On/Off Valves
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Pressure-Regulating Valves for Chemicals
- For Use With: Chemicals
- Temperature Range:
Polypropylene Body: 35° to 180° F
PVC Body: 40° to 140° F
A plastic body and fluoroelastomer seal stand up to harsh chemicals. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | |||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Location | Max. Pressure, psi | Pipe Size | Location | Pressure Range, psi | End-to-End Lg. | Each | |
NPT Female | ||||||||
PVC Body—Fluoroelastomer Seal | ||||||||
| 1/2 | Side | 125 | 1/2 | Side | 10 to 80 | 3" | 00000000 | 0000000 |
| 3/4 | Side | 125 | 3/4 | Side | 10 to 80 | 3 15/16" | 00000000 | 000000 |
| 1 | Side | 125 | 1 | Side | 10 to 80 | 3 15/16" | 00000000 | 000000 |
| 1 1/2 | Side | 125 | 1 1/2 | Side | 10 to 80 | 6 1/8" | 00000000 | 00000000 |
| 2 | Side | 125 | 2 | Side | 10 to 80 | 6" | 00000000 | 00000000 |
Adjustable Inline Pressure-Relief Valves for Chemicals
- For Use With: Potassium Sulfate, Sodium Hypochlorite
- Temperature Range: 0° to 140° F
With a three-port design, these valves allow inline flow from the inlet to the outlet during normal conditions and divert flow through the relief port in overpressure conditions. Often used with feed pumps for fertilizers and bleach, they have a PVC body and a PTFE seal for excellent chemical resistance. The relief port begins opening at the set pressure and fully opens at about 10% over the set pressure. It begins closing as pressure drops and fully closes when the system pressure is restored below the set pressure, resuming inline flow from the inlet to the outlet. Adjust the set pressure within the range.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | Relief Port | Set Pressure | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Maximum Pressure, psi | Pipe Size | Location | Pipe Size | Location | Range, psi | Adjustment Method | Overall Ht. | Each | |
NPT Female Inlet, Outlet, and Relief Port | |||||||||||
Dark Gray PVC Body—PTFE Seal | |||||||||||
| 1/4 | Side | 350 | 1/4 | Side | 1/4 | Bottom | 10 to 150 | External Adjustment Screw | 3 17/32" | 00000000 | 0000000 |
| 1/2 | Side | 350 | 1/2 | Side | 1/2 | Bottom | 10 to 250 | External Adjustment Screw | 5 9/16" | 00000000 | 000000 |
| 1 | Side | 350 | 1 | Side | 1 | Bottom | 10 to 250 | External Adjustment Screw | 5 7/8" | 00000000 | 000000 |
Adjustable Pressure-Relief Valves for Chemicals
- For Use With: Aluminum Chloride, Boric Acid
- Temperature Range: 40° to 140° F
Often used with catalysts, pH buffers, and electroplating solutions, these valves have a PVC body and an EPDM seal for excellent chemical resistance. They begin opening at the set pressure and fully open at about 10% over the set pressure. Valves begin closing as pressure drops and fully close when the system pressure is restored below the set pressure. Adjust the set pressure within the range. Valves have a port for attaching a pressure gauge.
For technical drawings and 3-D models, click on a part number.
Inlet | Relief Port | Set Pressure | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Maximum Pressure, psi | Pipe Size | Location | Range, psi | Adjustment Method | Overall Ht. | Gauge Port Pipe Size | Each | |
NPT Female Inlet and Relief Port | ||||||||||
Dark Gray PVC Body—EPDM Seal | ||||||||||
| 1/2 | Bottom | 150 | 1/2 | Side | 5 to 75 | External Adjustment Screw | 6 3/4" | 1/4 | 0000000 | 0000000 |
| 3/4 | Bottom | 150 | 3/4 | Side | 5 to 75 | External Adjustment Screw | 6 7/8" | 1/4 | 0000000 | 000000 |
| 1 | Bottom | 150 | 1 | Side | 5 to 75 | External Adjustment Screw | 8 3/4" | 1/4 | 0000000 | 000000 |
| 1 1/2 | Bottom | 150 | 1 1/2 | Side | 5 to 75 | External Adjustment Screw | 13 1/4" | 1/4 | 0000000 | 00000000 |
| 2 | Bottom | 150 | 2 | Side | 5 to 75 | External Adjustment Screw | 15 1/2" | 1/4 | 0000000 | 00000000 |
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
| Pipe Size | For Pipe Schedule | Max. Pressure | Min. Opening Pressure, psi | End-to-End Lg. | Color | Temperature Range, °F | Each | |
PVC Plastic Body | ||||||||
|---|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | ||||||||
| 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 Female × NPT Female | ||||||||
| 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 |
- 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 Female × NPT Female | ||||||||
| 2 | 80 | 100 psi @ 75° F | 1 | 8 1/2" | Gray | 40° to 140° | 0000000 | 0000000 |
CPVC Plastic Body | ||||||||
NPT Female × NPT Female | ||||||||
| 1 1/2 | 80 | 100 psi @ 75° F | 1 | 7 15/16" | Light Gray | 40° to 180° | 0000000 | 000000 |
Socket-Connect On/Off Valves for Drinking Water
- Valve Type: Ball
- For Use With: Drinking Water
- Seal Material: EPDM Rubber
- Specifications Met: NSF/ANSI 61
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 systems. All have a T-handle that resists accidental movement when snagged or bumped. They are full port, so they do not restrict flow.
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 | Temperature Range, °F | Vacuum Rating, in. of Hg | End-to-End Lg. | Choose a Color | Each | |
PVC Plastic Body | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Socket Connect × Socket Connect | |||||||||
| 2 | 40, 80 | 755 | 150 psi @ 70° F | 40° to 140° | 26 | 5 3/16" | 0000000 | 000000 | |
| 3 | 40, 80 | 1,660 | 150 psi @ 70° F | 40° to 140° | 26 | 7 15/16" | 0000000 | 000000 | |
| 4 | 40, 80 | 3,129 | 150 psi @ 70° F | 40° to 140° | 26 | 9 3/16" | 0000000 | 000000 | |