Tankless Water Heater T And P Valve

If all goes well a tpr valve never gets used except during testing.

Tankless water heater t and p valve.

You shouldn t need an expansion tank on a tankless water heater. The takagi gas fired tankless water heater manual specifies a pressure relief valve on the hot water outlet. This valve may sit quietly unnoticed on your water heater but it has a very important purpose. I m betting the pressure is a little high and the act of water hammer is pushing the valve open a little.

Gas fired tankless water heaters will usually require a pressure relief valve while electric on demand water heaters may not. My personal opinion of tankless heaters is that they are way too expensive to install and maintain never mind that few plumbers know how to service them. Tankless heaters are required to have a pressure relief valve. On the side or top of your water heater tank is a valve connected to a metal or plastic discharge tube pointing downward.

Here s an excerpt from that manual. In my application code requires a pressure relief but not a temperature relief t p. They are prone to failure particularly if there is any water condition hard water etc at all. To keep your heater from exploding.

The t p relief valve short for temperature pressure relief valve is a critical safety device on your water heater. The valve is called a t p valve or tpr valve for temperature and pressure relief. So consult the manufacturer s installation manual.