Watts w-0009257 Pressure Reducing Valve 3/4 in Fnpt

Product Description

The WATTS w-0009257 is a lead-free pressure reducing valve (PRV) designed to lower incoming municipal or building water pressure to a safe, manageable range for downstream plumbing components. Built around the LF25AUB-Z3 series, it features a cast copper silicon alloy body, a reinforced EPDM diaphragm rated for hot water service, and an integral stainless steel strainer. The adjustable pressure range runs from 25 to 75 psi, making it suitable for a wide range of supply conditions. Operating temperature range spans 33 to 160 degrees F. Licensed plumbers install this valve where incoming pressure must be controlled to protect fixtures, water heaters, and piping.

This valve is used in both residential and commercial plumbing systems where high incoming water pressure poses a risk to system components or results in excessive water consumption. The 3/4-inch nominal size with FNPT union inlet and FNPT outlet connections suits standard potable water supply lines. The union inlet connection allows the valve body to be removed for service without disturbing surrounding piping. The unit is fully serviceable in-line, reducing downtime during maintenance. Typical applications include point-of-entry pressure regulation in single-family homes, apartment buildings, and light commercial facilities.

Key Features

• Adjustable pressure range: 25 to 75 psi
• Lead-free cast copper silicon alloy body construction meets lead-free compliance requirements for potable water
• Reinforced EPDM diaphragm and polymer seat rated for hot water service up to 160 degrees F
• Integral stainless steel strainer protects internal components from debris
• Union inlet connection enables in-line serviceability without pipe disassembly
• Inlet to outlet length: 5-5/16 inches; top to inlet center: 7 inches

Compatibility

Designed for use in commercial and residential potable water supply systems requiring pressure reduction at point of entry or branch lines. The LF25AUB-Z3 series is also available in threaded, solder, PEX, quick-connect, and CPVC end connection configurations with union and double union options for varied installation requirements.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the main water supply and relieve system pressure before beginning work. Install the valve with the flow direction arrow aligned to the direction of supply flow. After installation, adjust the pressure setting gradually and verify downstream pressure with a calibrated gauge before returning the system to service.

Technical Specifications

• Nominal Size: 3/4 inch
• End Connection: FNPT Union x FNPT
• Pressure Range: 25 to 75 psi
• Temperature Range: 33 to 160 degrees F
• Inlet to Outlet Length: 5-5/16 inches
• Top to Inlet Center: 7 inches
• Body Material: Cast Copper Silicon Alloy
• Diaphragm Material: Reinforced EPDM
• Seat Material: Polymer
• Strainer Material: Stainless Steel
• Media: Water
• Lead-Free Compliant: Yes

Standard Information

• Brand: WATTS
• Manufacturer Part Number: w-0009257