Watts 0125566 Lead Free Ball Relief Valve 3/4 in Pex 125 Psi

Product Description

The WATTS 0125566 is a lead free combination ball valve and relief valve designed for water heater installations in residential and commercial plumbing systems. The valve integrates a full port shutoff with a factory-set 125 psi pressure relief into a single low-profile body, reducing the number of connections required on a water heater supply line. The body is lead free bronze with a chrome plated lead free brass ball and a blowout-proof lead free brass stem. PTFE seats, a Viton relief ball, and a stainless steel relief spring are included. The body is rated to 400 psi working pressure, and the relief is set at 125 psi. A licensed plumber installs this fitting.

This combination valve is used on residential and light commercial water heater installations where code requires both a means to shut off the cold water supply and protection against excess pressure caused by thermal expansion. The 3/4 inch PEX x PEX x PEX port configuration connects directly to PEX supply lines without additional adapters at the inlet and outlet. The relief valve outlet includes a drain tube connection with a 3/4 inch PEX fitting for discharge piping. The low-profile body accommodates tight mechanical room installations and can be installed in any orientation.

Key Features

• Lead free bronze full port body meets lead free compliance requirements for potable water systems
• Relief valve factory set at 125 psi to protect against thermal expansion overpressure
• 400 psi body pressure rating provides a wide safety margin above relief set point
• 3/4 inch PEX x PEX inlet and outlet connections with PEX drain tube fitting on relief outlet
• Blowout-proof lead free brass stem with PTFE seats and stem thrust bearing for reliable cycle life
• Stainless steel relief spring and Viton relief ball resist corrosion in potable water service
• Low-profile design installs in any position, suited for confined water heater closets

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and commercial water heater supply lines using 3/4 inch PEX piping systems.

Installation Notes

Installation must be performed by a licensed plumber in accordance with the applicable local plumbing code and IAPMO or IPC requirements. Shut off the main water supply and relieve system pressure before removing any existing valve or making new connections. Secure all PEX connections with the appropriate crimp, clamp, or expansion tool rated for the fitting type. Always pipe the relief valve outlet to an appropriate drain location per code to safely discharge water in a pressure relief event.

Technical Specifications

• Connection Size: 3/4 inches
• Connection Type: PEX x PEX x PEX
• Relief Set Pressure: 125 psi
• Body Pressure Rating: 400 psi
• Body Material: Lead free bronze
• Ball and Stem Material: Chrome plated lead free brass
• Seat Material: PTFE
• Relief Ball Material: Viton
• Relief Spring Material: Stainless steel
• Handle Material: Zinc plated carbon steel
• Port Type: Full port body, reduced port inlet and outlet
• UPC: 098268094275

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 0125566