Watts LF25AUB-Z3 2 2 In Lead Free Water Pressure Reducing Valve, Npt Female Union X Npt Female, Ss Seat, Adjustable 25-75 psi

It's a 2 inch valve with female NPT threads on both ends, inlet and outlet. The inlet side is a union connection, so you can break the valve out of the line for service without cutting pipe. If your line is copper or PEX you'll need threaded adapters to land on the 2 inch female NPT ports.

It ships preset at 50 psi downstream and adjusts anywhere from 25 to 75 psi (1.7 to 5.2 bar). That covers most residential and light commercial service where you're knocking a high street main down to something fixtures can live with. If your building needs a reduced setting above 75 psi, this range won't get you there.

Yes. The LF25AUB-Z3 is a lead free model with a cast copper silicon alloy body, which is what puts it on potable water service instead of the older bronze PRVs. It's also flagged Buy American Act compliant, USA, which matters if you're buying for a government or federally funded job.

The LF25AUB-Z3 has a built-in thermal expansion bypass, so when downstream pressure rises above the inlet pressure the valve relieves back toward the supply. That handles the closed-system condition a standard PRV creates. Many codes and water heater manufacturers still require an expansion tank on the hot side, so check what your inspector expects for the building.

A stainless steel strainer is integral to the valve, so you do not need a separate Y-strainer upstream just to protect the seat. Leave clearance at the strainer cap so it can be pulled and cleaned, especially on well water or after any main repair that stirs up debris.

Maximum working pressure is 300 psi (20.7 bar) on the inlet side, so a high-pressure municipal main or a booster-fed riser is well within it. What matters more day to day is the outlet setting, which tops out at 75 psi.

No gauge is supplied with the LF25AUB-Z3. If you want to read and dial the downstream setting, plan on a gauge teed into the outlet piping, or order a gauge-equipped model instead.

Maximum operating temperature is 160 F, with a minimum of 33 F (0.5 C), so it is not a valve for steam or high-temperature service. It is intended for cold potable supply; a domestic hot line running at typical 120 to 140 F stays inside the rating, but keep it out of any loop that can exceed 160 F. The 33 F minimum also means it needs to be in conditioned or heat-traced space, not an unprotected exterior location.

Trim is stainless steel, including the seat, and the disc is EPDM. The body carries a corrosion resistant coating. Stainless trim is the reason this one holds its setting on water with grit or aggressive chemistry better than a soft-seat-only build, and EPDM is the standard elastomer for potable cold water.

Order it as Watts LF25AUB-Z3 2. The 2 on the end is the 2 inch size within the LF25AUB-Z3 series, and Watts also catalogs it under part number 9465. One configuration only, so there are no finish or trim choices to specify.