Watts 005984 Lead Free Pressure Reducing Valve

Description:

The Watts LP U5B-LP-Z3 1/2" Pressure Reducing Valve (Part No. 005984) is a lead-free high-performance water pressure reducing valve designed to reduce incoming water pressure to a safe, controlled level and protect downstream plumbing components. Commonly installed in residential, commercial, and industrial potable water systems, it helps minimize excessive pressure, reduce water consumption, and extend the service life of pipes, fixtures, valves, and appliances. Its serviceable in-line design includes an integral stainless steel strainer and thermal expansion bypass feature for reliable long-term operation.

Applications:

The Watts LP U5B-LP-Z3 is widely used on municipal water service entrances, commercial buildings, apartment complexes, manufacturing facilities, irrigation systems, schools, hospitals, and residential plumbing systems. It automatically maintains downstream pressure despite fluctuations in supply pressure, helping prevent water hammer, protect plumbing equipment, and improve overall system efficiency. The valve is suitable for hot and cold potable water applications and can be serviced without removal from the pipeline.

Technical Specifications:

• Manufacturer Part Number (MPN): 005984
• Model: U5B-LP-Z3 / LFU5B-LP-Z3
• Brand: Watts
• Product Type: Water Pressure Reducing Valve
• Valve Size: 1/2 in.
• Connection Type: FNPT Union × FNPT
• Body Material: Lead-Free Cast Copper Silicon Alloy
• Pressure Adjustment Range: 10–35 PSI (low-pressure version)
• Factory Pressure Setting: 30 PSI
• Maximum Working Pressure: 300 PSI
• Maximum Operating Temperature: 160°F (71°C)
• Service Media: Potable Water
• Strainer: Integral Stainless Steel
• Bypass Feature: Yes, for thermal expansion control
• Diaphragm Material: Reinforced EPDM
• Function: Automatic Water Pressure Reduction and Regulation
• Installation: Inline Water Supply Systems
• Serviceability: In-line maintenance without removal from piping
• Compliance: Lead-Free construction for potable water applications

Common Replacements:

• Watts LFU5B-Z3 
• Watts LF25AUB-Z3 
• Watts LFN45B-M1