3) Each TPR valve must have its own discharge piping, not shared with any other devices or equipment. In the example below, an upper pressure relief valve drain (not visible behind vent connector) has been tied into the drain for the lower one. 4) Termination of the discharge piping can be to any of the following: the floor

2024年1月15日 · A correctly installed TPR discharge pipe directs this scalding water to discharge to a safe location to the exterior or drain location. Water heater manufacturers state that a TPR discharge pipe is required to direct hot water to the exterior or a suitable drain location.

Outlet piping from pressure relief valves should be equipped with drains or otherwise suitably piped to prevent accumulation of liquids at the valve outlet. Pressure relief valve outlet piping for water or other liquids should be self-draining.

T&P valve discharge tubes: code requirements, safety hazards, installation details. This article describes the requirements for a discharge tube or drain line on temperature & pressure relief valves used on any appliance that heats water.

The TPR valve will activate if either water temperature (measured in degrees Fahrenheit) or pressure (measured in pounds per square inch [PSI]) exceed safe levels. The valve should be connected to a discharge pipe (also called a drain line) …

2020年6月4日 · Not be directly connected to the drainage system. Discharge through an air gap located in the same room as the water heater. Not be smaller than the diameter of the outlet of the valve served and shall discharge full size to the air gap. Serve a single relief device and shall not connect to piping serving any other relief device or equipment.

2022年1月19日 · This plumbing code essentials based on the International Plumbing Code, states that the relief valve may discharge to the floor.

The discharge pipe from a water heater temperature and pressure relief valve (T&P valve) is an extension of the potable water distribution system. Because Section P2902.1 prohibits cross connections between the potable water supply and any source of contamination (such as a drainage system), a T&P valve discharge pipe that discharges to a drain ...

2002年4月1日 · The discharge piping serving a pressure relief valve, temperature relief valve or combination valve shall: Not be directly connected to the drainage system. Discharge through an air break located in the same room as the boiler .

2024年10月16日 · The pressure relief valve’s discharge pipe must not terminate directly into a drain or extend deep into a floor drain or drain pan. Doing so could allow backflow in the event of a drain backup, potentially contaminating the water in the heater.