Watts 1 1/4 LF25AUB-Z3 Water Pressure Reducing Valve 25-75 PSI New
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The Watts 1 1/4 LF25AUB-Z3 is a lead-free water pressure reducing valve designed for potable water systems and certified to NSF/ANSI Standard 61, meeting California Proposition 65 requirements. The valve features a 1 1/4-inch female NPT inlet and outlet connection, with an adjustable set pressure range of 25–75 PSI and maximum rated pressure of 300 PSI at 180°F. The internal design uses a spring-loaded diaphragm mechanism to automatically reduce inlet water pressure to a user-set downstream pressure, protecting plumbing fixtures and appliances from damage caused by excessive municipal water pressure. This new unit is factory-sealed and comes with an integral gauge port for field pressure monitoring and adjustment via the top-mounted screw. Installation is compatible with standard 1 1/4-inch female NPT plumbing fittings in residential and light commercial water distribution systems.
Product Specifications
| Brand | Watts Water Technologies |
| Part Number | LF25AUB-Z3 |
| Connection Size | 1 1/4 inch NPT female |
| Pressure Setting Range | 25–75 PSI |
| Maximum Rated Pressure | 300 PSI at 180°F |
| Valve Type | Direct-acting diaphragm pressure reducing valve |
| Material | Brass body, internal brass and stainless steel components |
| Lead Content | Lead-free (NSF/ANSI 61 certified) |
| Temperature Rating | 180°F maximum |
| Certifications | NSF/ANSI Standard 61, California Proposition 65 compliant, UPC registered |
| Outlet Gauge Port | Yes, integral 1/4-inch NPT |
| Adjustment Method | Hex screw adjustable spring tension |
| Condition | New, factory sealed |