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Warning: Products have one, but not necessarily all, of the selected characteristics.
Valve Function Valve Function |
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Maximum Inlet Pressure Maximum Inlet Pressure |
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Valve Type Valve Type |
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Inlet Thread Type Inlet Thread Type |
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Set Pressure Configuration Set Pressure Configuration |
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Set Pressure Set Pressure |
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Seal Material Seal Material |
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Inlet Gender Inlet Gender |
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Maximum Temperature Maximum Temperature |
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Inlet Connection Style Inlet Connection Style |
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Gauge Port Pipe Size Gauge Port Pipe Size |
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Gauge Port Thread Type Gauge Port Thread Type |
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Relief Port Gender Relief Port Gender |
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Relief Port Thread Type Relief Port Thread Type |
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Flow Coefficient (Cv) Flow Coefficient (Cv) |
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About Pressure-Relief Valves
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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 | ||||||||
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| 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 | 000000 |
| 2 | Bottom | 150 | 2 | Side | 5 to 75 | External Adjustment Screw | 15 1/2" | 1/4 | 0000000 | 000000 |