3/4" Temperature and Pressure Relief Valve, 8" Probe Length, Male x Female

Watts 3/4" Temperature & Pressure Relief Valve – Proven Protection for Hot Water Systems

The Watts 3/4" T&P Relief Valve is engineered to safeguard storage water heaters and hot water supply tanks by automatically discharging when temperature or pressure exceeds safe system limits. With dual functionality and factory-set performance parameters, this valve delivers dependable protection against overpressure and overheating—critical factors in preserving system integrity and safety.

Designed with lead-free copper alloy for compliance in potable water systems, the valve includes a precision thermostat element and high-capacity discharge for reliable operation in demanding environments. This model meets all applicable ASME and CSA performance standards for T&P relief applications.

Primary Advantages

• Combined Pressure and Temperature Relief – Opens at 210°F or 150 psi, providing fast response in critical conditions.
• Lead-Free Copper Alloy Body – NSF 372 compliant; durable and safe for drinking water use.
• Thermostat with Thermo-Bonded Coating – Enhances accuracy and longevity in high-heat environments.
• Standard 3/4" NPT Male Inlet – Easily connects to most residential and commercial hot water systems.
• ASME and CSA Certified – Built to meet plumbing code requirements in North America.

Specifications

• Size: 3/4" NPT inlet
• Pressure Setting: 150 psi
• Temperature Setting: 210°F
• Body Material: Lead-free copper alloy
• Media: Potable water
• Installation Orientation: Vertical

Installation Guidance

This valve must be installed directly into the designated relief port of a water heater or hot water tank. A discharge pipe must be attached and piped to a safe drain point per local plumbing code. While installation is generally straightforward, improper orientation or discharge line routing can impair functionality. For safety and compliance, installation should be completed by a licensed professional familiar with pressure relief system requirements.

What to Know On the Job

For Contractors:

This is a high-quality, code-compliant T&P valve trusted for new construction and replacement jobs alike. Its proven field performance and ease of installation make it a preferred choice for hot water system protection. Stock it for service calls and spec it with confidence on tank installs.

For In-House Maintenance Teams:

If performing routine equipment upgrades or preventative maintenance on-site, this relief valve is an ideal replacement component. Check valve age, signs of mineral buildup, and test the release lever annually to confirm proper function. Always verify compatibility with tank capacity and rating labels.

Conclusion

The Watts 3/4" Temperature and Pressure Relief Valve is a critical component for maintaining the safety of any pressurized hot water system. Built from quality materials and certified to industry standards, it offers peace of mind and long-term performance in both residential and commercial applications. For dependable protection, choose a valve that professionals have trusted for decades.