3/4" Brass Temperature and Pressure Relief Valve

Watts 3/4" Brass T&P Relief Valve – Trusted Protection for Water Heater Systems

The Watts 3/4" Temperature and Pressure Relief (T&P) Valve is a critical safety component for pressurized water heating systems. Engineered to protect against excessive temperature and pressure buildup, this valve discharges water when system thresholds are exceeded—helping prevent tank rupture and maintain system integrity.

Constructed from corrosion-resistant brass and equipped with an accurate thermal element, this ASME-rated valve is suitable for residential and commercial water heaters, storage tanks, and hot water supply systems. When installed and maintained properly, it delivers reliable, code-compliant safety performance in a compact, dependable design.

Performance Features

• Integrated Temperature & Pressure Protection – Opens at 210°F or 150 psi, safeguarding against overheating and overpressurization
• Precision Thermal Element – Factory-calibrated thermostat with bonded coating for consistent temperature sensing
• Heavy-Duty Brass Body – Resists corrosion and mechanical wear for long-lasting performance in high-demand environments
• Test Lever – Enables simple, routine safety checks
• Straight Discharge Design – For vertical installation directly on water heater tanks

Specifications

• Inlet/Outlet Size: 3/4" NPT
• Pressure Setting: 150 psi
• Temperature Setting: 210°F
• Media: Potable water
• Body Material: Brass
• Approvals: ASME Section IV, ANSI Z21.22, CSA certified

Installation Overview

Installation should be performed by a licensed plumber in accordance with manufacturer instructions and local plumbing codes. The valve must be mounted in a vertical position directly on the water heater tank with a discharge pipe routed to a safe drainage location. Avoid plugging or capping the discharge line, and ensure it remains unobstructed at all times.

Contractor Insights

For Professional Use: This T&P valve offers dependable operation on job sites and in maintenance work. It’s a preferred choice for contractors needing fast, code-compliant solutions that deliver proven protection.

For Water Heater Technicians: Whether you're installing a new system or replacing an existing valve, the Watts 3/4" T&P Valve provides consistent results and supports standard tank fittings, simplifying your workflow.

Long-Term System Protection

Watts is a recognized name in the industry for high-performance safety products. With this T&P valve, contractors and facility managers can ensure water heater systems are protected from critical overpressure and overheating risks. It’s a small investment in long-term system integrity and user safety.