Summary – What is a pressure relief valve? – Installing a relief valve A relief valve is a device that allows the regulation of the flow of a fluid by releasing the overflow of water to lower the pressure. What
Hot Water System: What Is a Differential Pressure Valve
The differential pressure valve is calibrated, installed in bypass between the flow and return circuits of a heat transfer liquid system.
It is both a safety element for the installation, a comfort element for the occupants, and a source of energy savings.