1/2" Pressure Reducing Valve, Female Union x Female

Watts 1/2" Pressure Reducing Valve – Engineered for Consistent Performance

The Watts 1/2" Pressure Reducing Valve is a precision-engineered component designed to regulate incoming water pressure and protect plumbing systems from damage caused by excessive force. Ideal for residential and light commercial systems, this valve provides reliable downstream pressure control while maintaining consistent flow.

Constructed from lead-free copper silicon alloy, this valve meets national low-lead requirements and is built to withstand long-term use in demanding conditions. A factory preset outlet pressure of 50 psi offers dependable performance out of the box, while the adjustable range allows fine-tuning between 25 and 75 psi.

Contractor-Focused Features

• Lead-Free Copper Alloy Body – NSF 61 and NSF 372 compliant for potable water systems.
• Integral Stainless Steel Screen – Prevents debris from damaging internal components.
• Field-Adjustable Pressure Control – Dial in outlet pressure to meet specific system demands.
• In-Line Serviceability – Easy access to internal parts without removing the valve from the line.
• Thermal Expansion Bypass – Helps relieve pressure from downstream heating system fluctuations.
• Union Inlet Connection – Streamlined installation and easier maintenance access.

Specifications

• Size: 1/2 inch NPT
• Maximum Inlet Pressure: 300 psi
• Adjustable Outlet Pressure: 25–75 psi (Factory Set to 50 psi)
• Operating Temperature: 33°F to 160°F
• Body Material: Cast copper silicon alloy (lead-free)
• Diaphragm: Reinforced EPDM

Installation Considerations

For optimal results, install the valve in a clean, accessible location on the cold water supply line to the system. The valve can be installed in any orientation but must be supported properly. Isolation valves and pressure gauges are recommended upstream and downstream for serviceability and monitoring.

Though designed for straightforward installation, professional installation is advised to ensure code compliance and accurate calibration of system pressure. Follow local codes and manufacturer's specifications to avoid valve seat damage or premature failure.

Performance and Reliability in the Field

This model is trusted by plumbing professionals for both new construction and retrofit jobs. The internal strainer helps extend life by minimizing exposure to sediment, while the integral bypass feature offers an added layer of protection for closed-loop systems. A compact footprint and serviceable design reduce labor time, making this valve a practical choice on the jobsite.

Summary

The Watts 1/2" Pressure Reducing Valve delivers stable, adjustable performance in a rugged, lead-free body built to meet today's regulatory standards. Designed with field service in mind and equipped with essential protective features, it’s an excellent choice for contractors seeking efficient water pressure management and long-term system reliability.