The 4 Elbow Rule for Temperature Pressure Relief Valves

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When it comes to temperature pressure relief valves, it is crucial not to overlook the 4 elbow rule, which states that the discharge tube connected to the valve should not have more than four 90° elbows or bends and no longer than 30 feet long. This information is on the tag attached to the valve.

Nore more than 4 elbows according to the manufactures tag.
Image James Saunders, NC # 3728

Water heater explosions can pose significant risks to both property and personal safety. Adhering to the 4 elbow rule helps prevent restrictions in the discharge line, ensuring the temperature pressure relief valve can effectively release excess pressure and temperature, thereby minimizing the potential for catastrophic failures.

As a diligent home inspector, it is essential to prioritize continuous learning and stay informed about industry guidelines, including reading and understanding available documentation such as the valve’s tag, to ensure the utmost safety and professionalism in your inspections

See the complete tag here
Categories: plumbingSafety

JJ Greive

JJ & Suzanne are both licensed, highly skilled inspectors and educators. We are the authors of our class curriculum, and truly enjoy sharing this with our students