3/4" Lead Free Temperature and Pressure Relief Valve, Male x Female

Watts 3/4" Lead-Free T&P Valve – Reliable Safety for Water Heater Systems

Engineered to protect water heaters and storage tanks from excessive temperature and pressure, the Watts 3/4" Lead-Free Temperature and Pressure Relief Valve is a critical safety component in any hydronic or potable hot water system. This ASME-rated valve discharges when temperature exceeds 210°F or pressure surpasses 150 psi, helping prevent equipment failure and potential hazards.

Designed for long-term performance in demanding applications, the valve features a robust brass body, stainless steel spring, and an epoxy-coated thermostat for corrosion resistance and accuracy. It complies with ANSI Z21.22 and CSA standards, making it a dependable solution for code-compliant installations.

Product Features

• Lead-Free Brass Body – Certified to NSF/ANSI 372; safe for use in potable water systems
• 210°F / 150 psi Relief Settings – Standard safety thresholds for most residential and light commercial heaters
• Epoxy-Coated Thermostat – Bonded for precise thermal response and long service life
• Extended Shank Design – Accommodates tanks with thick insulation for a proper seat
• Stainless Steel Spring – Provides reliable valve operation under high-pressure conditions
• Manual Test Lever – Facilitates system checks and ensures the valve remains operational over time

Technical Specifications

• Connection Size: 3/4" MNPT inlet x 3/4" FNPT outlet
• Body Material: Lead-free brass
• Relief Temperature: 210°F
• Relief Pressure: 150 psi
• Media: Water only
• Certification: ASME Section IV; CSA certified

Installation Guidance

This T&P valve should be installed in the designated port on a water heater or storage tank, with the discharge pipe directed downward and piped to within 6" of the floor or a suitable drain. Use of thread sealant (not pipe dope) is recommended. Installation should be handled by a licensed plumber to ensure compliance with all local codes and safety standards.

For the Professional Installer

This valve is a staple on job sites where code compliance and product reliability are non-negotiable. Its robust design minimizes callbacks and ensures long-term system protection. The extended shank version is especially beneficial when retrofitting newer tanks with thicker foam insulation.