Watts LF25AUB-HP-Z3 1-1/2" Lead-Free Water Pressure Reducing Valve
SKU: LF25AUB-HP-Z3
Watts LF25AUB-HP-Z3 — 1-1/2" lead-free water pressure reducing valve, high-pressure range 75-125 PSI factory-set at 90 PSI. Designed to reduce incoming water pressure to protect plumbing system components and reduce water consumption in commercial, industrial, and high-rise residential applications where supply pressure exceeds the standard 25-75 PSI range.
Specifications
| Manufacturer | Watts |
|---|---|
| Manufacturer Part Number | LF25AUB-HP-Z3 |
| Watts Ordering Code | 0009411 |
| UPC | 098268331653 |
| Size | 1-1/2 in |
| Inlet Connection | 1-1/2" NPT Female Union |
| Outlet Connection | 1-1/2" NPT Female |
| Adjustable Pressure Range | 75 - 125 PSI (5.2 - 8.6 bar) |
| Standard Pressure Setting | 90 PSI |
| Maximum Working Pressure | 300 PSI (20.7 bar) |
| Temperature Range | 33 - 180°F (0.5 - 82°C) |
| Body Material | Lead-Free Cast Copper Silicon Alloy |
| Diaphragm | EPDM, high-temperature reinforced |
| Strainer | Integral stainless steel, removable for cleaning |
| Bypass | Integral thermal-expansion bypass |
| Lead Free | Yes — compliant with state Lead Free installation requirements |
| Buy American Act | Compliant |
| Standards | ASSE 1003, ANSI A112.26.2, CSA B356, IAPMO listed, MIL-V-18146B Type I |
| Approximate Weight | 10 lbs |
Key Features
- Lead-Free cast copper silicon alloy construction — meets all federal and state Lead Free statutes
- Sealed Z3 spring cage with stainless steel corrosion-resistant adjusting and cage screws
- Integral stainless steel strainer, removable for cleaning without taking the valve out of line
- Replaceable seat module — serviceable in line
- Thermal-expansion bypass relieves outlet-side pressure spikes back to the main
- High-temperature reinforced diaphragm rated for hot water service
- NPT female union inlet for straightforward installation and service
Typical Applications
- Commercial buildings with high municipal supply pressure (over 75 PSI)
- Industrial process water lines
- High-rise residential supply mains
- Boiler feedwater pressure regulation (within rated range)
- Irrigation system pressure control
Documentation
Specifications
Installation Instructions
Documentation

