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Warning: Products have one, but not necessarily all, of the selected characteristics.
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Set Pressure Set Pressure |
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Set Pressure Configuration Set Pressure Configuration |
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Inlet Thread Type Inlet Thread Type |
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Maximum Inlet Pressure Maximum Inlet Pressure |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Relief Port Thread Type Relief Port Thread Type |
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About Pressure-Relief Valves
More
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 | ||||||||
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| 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 |