Watts 0125374 Repair Kit

When you are dealing with a drop in downstream pressure or a screaming valve, the Watts 0125374 Repair Kit is the professional-grade solution for restoring a 3/4-inch Watts LFN250 series water pressure reducing valve. This comprehensive LFN250RK service kit is the updated OEM replacement for legacy part numbers 0878339 and RKLFN250-3/4. Designed for lead-free water pressure regulator maintenance, this kit allows you to rebuild the valve trim without removing the body from the line, saving significant labor time on the job site.

The Watts 0125374 features unitized construction, integrating the stainless steel valve seat, disc, and stem into a single assembly to ensure precise alignment and a reliable seal against high incoming supply pressures up to 250 PSI. The included high-temperature resisting diaphragm and integral strainer screen are engineered to handle the thermal expansion and debris common in residential and commercial plumbing systems. By replacing these critical internal components, you maintain the standard 50 PSI factory setting and protect sensitive downstream appliances from the damaging effects of high-velocity water flow.

Key Benefits for Contractors

• Universal Compatibility: Specifically engineered for 3/4" Watts LFN250 and N250 series valves, ensuring an exact fit for lead-free pressure reducing valve models.
• Total Internal Restoration: Includes a high-durability diaphragm, disc, stem, and stainless steel seat to eliminate leaks and restore precise regulation.
• Rapid Field Service: Unitized seat and disc assembly allows for "in-line" servicing, eliminating the need to sweat or thread a new valve body into tight spaces.
• Lead-Free Compliance: All kit components meet strict potable water requirements, keeping your installation up to code.
• Thermal Expansion Protection: Designed to work with the optional bypass feature in LFN250 models to manage pressure surges in closed systems.

Common Questions

Does this kit work for the standard N250 and the lead-free LFN250?
Yes, the Watts 0125374 is the current replacement part for both series, providing full compatibility with the internal geometry of 3/4-inch modules.

Should I clean the strainer screen before installing the new assembly?
While this kit includes a new strainer screen, it is best practice to flush the supply line before reassembly to prevent loose scale or sediment from damaging the new stainless steel valve seat.

Will this repair kit fix a whistling or vibrating valve?
Vibration is often caused by a worn diaphragm or a fouled seat. Replacing these parts with the LFN250RK components typically eliminates the resonance and restores quiet operation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.