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The WILKINS 63-13 is a union gasket designed as a service and replacement part for the Wilkins 600XL series pressure reducing valve. Union gaskets create a leak-free seal at the union connection points on a PRV assembly, maintaining system integrity under normal line pressure. This part is installed by licensed plumbers during routine maintenance, rebuild procedures, or when repairing a valve that shows seepage at the union joints. Keeping the correct OEM-spec gasket on hand reduces downtime when servicing pressure reducing stations in residential or light commercial water supply systems.
This gasket is specifically called out for use with the Wilkins 600XL pressure reducing valve in the 1 inch pipe size. It is a common service part stocked by plumbing contractors who maintain or rebuild PRV assemblies on domestic water supply lines. The 600XL is a single-union or dual-union configured valve used in potable water systems where inlet pressure must be reduced to a safe downstream working pressure.
Designed for use with the Wilkins Model 600XL 1 inch Pressure Reducing Valve.
Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve all system pressure before disassembling the union connections on the PRV. Inspect the union threads and mating surfaces for damage before seating the new gasket. Do not overtighten the union nut, as this can deform the gasket and cause leaks.
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