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The AMERICAN GRANBY irv50nl is a spring-loaded, pre-set pressure relief valve built for potable water pump systems. Manufactured with a brass body and rated at 75 psi, this valve is designed to protect pump systems from overpressure conditions without requiring field adjustment. The set pressure is factory-configured and is not adjustable in the field. It meets NSF/ANSI 372 lead-free requirements, making it suitable for potable water applications. Licensed plumbers and pump service technicians install this valve as a protective component in residential and light commercial water supply systems.
This valve is suited for shallow well, deep well, and submersible pump installations where overpressure protection is required. The 1/2 inch male threaded inlet and 1/2 inch female threaded outlet allow for straightforward integration into standard pump discharge piping. Its spring-loaded, pre-set design eliminates the need for on-site calibration, making it well-suited for service calls where speed and reliability are priorities. It is packaged 10 units per carton, making it a practical stocking item for plumbing supply houses and pump service contractors.
Designed for use with shallow well, deep well, and submersible pump systems requiring 1/2 inch threaded pressure relief protection at a 75 psi set point in potable water applications.
Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off and depressurize the pump system completely before removing any existing valve or installing this component. Do not attempt to adjust or override the factory-set pressure setting. Verify that the discharge port is directed to a safe, code-compliant location capable of handling intermittent water discharge.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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