![]() ![]() Temperature Relief Valve: Means a temperature actuated valve designed to automatically discharge at a designed temperature. ![]() Temperature & Pressure Relief Valve: Means a combination relief valve designed to function as both a temperature relief and a pressure relief. Pressure Relief Valve: Means a pressure actuated valve held closed by a spring or other means and designed to automatically relieve pressure at a designated pressure. Water Heater: Means any heating device with piping connections to the water supply system that is intended to supply hot water for domestic or commercial purposes other than space heating Hot Water: Means water at a temperature of 110 degrees F or more. First I will start with the Department of Commerce official definitions then move forward with the actual pluming code. The discharge pipe has both a maximum and minimum distance from the floor according to State plumbing code.īelow is the current plumbing code as written by the Department of Commerce. Attached to the relief valve is a discharge pipe. If pressure builds or temperatures reach dangerous levels the valve opens up and discharges the pressure. If you don’t want to read the code skip to the bottom for a summary.Ī typical water heater has a safety device known as a relief valve and is sometimes known as a temperature and pressure valve. In this tutorial you will learn about the codes and regulations concerning the water heater relief valve safety device.
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