3/4" Pressure Relief Valve, Brass, Extended Shank Temperature, Self closing safety valv

Watts 3/4" T&P Relief Valve – High-Performance Safety Component for Water Heaters

The Watts 3/4" Temperature and Pressure Relief Valve is engineered to protect water heating systems from excessive temperature and pressure buildup. Designed for installation on commercial and residential storage water heaters, this valve offers a dependable safeguard that helps ensure compliance with plumbing codes and ASME safety standards.

Product Overview

This factory-calibrated T&P valve automatically discharges water at 210°F or when system pressure exceeds its rated limit—effectively preventing tank rupture or system failure. It features a robust brass body, stainless steel spring, and a unique thermostat with a thermo-bonded coating to provide durability under continuous high-temperature service.

Professional Features

• ASME Section IV and CSA Certified – Rated and tested for performance under national safety standards.
• 210°F Temperature Relief – Thermostat accurately detects overheating conditions.
• Pressure Settings: Factory options range from 75 to 150 psi (most common: 150 psi).
• Extended Shank Design – Accommodates heaters with insulation up to 3 inches thick.
• Corrosion-Resistant Thermostat Coating – Increases longevity in high-temperature environments.
• Test Lever – Provides quick verification of valve function during system inspections.

Technical Specifications

• Inlet Size: 3/4" MNPT
• Outlet Size: 3/4" FNPT
• Pressure Range: 75 – 150 psi (varies by model)
• Relief Temperature: 210°F
• BTU Capacity: Up to 105,000 BTU/hr
• Body Material: Lead-free brass

Installation Considerations

This valve is intended for direct installation into the top or side tapping of a water heater. Installation should be performed by a licensed contractor to ensure compliance with local code and manufacturer instructions. Improper installation or lack of routine testing can result in unsafe conditions and void warranty coverage.

Ideal Applications

• Commercial and residential storage-type water heaters
• Booster heaters and auxiliary hot water systems
• Installations requiring thermal safety protection to ASME and CSA standards

Ensure Safe Operation of Your Hot Water System

Backed by decades of field performance and rigorous third-party certifications, the Watts 3/4" Temperature and Pressure Relief Valve is a trusted component for contractors focused on safe, code-compliant water heater installations. Choose reliability—choose Watts.