The product is equipped with 3 connecting hoses so that heating does not increase the pressure: The cold water end goes from the angle valve directly into the faucet hose and takes pressure through the faucet. Connection of faucet outlet end to heating unit outlet end. The outlet end of the faucet is connected to the inlet end of the heating unit. Conventional faucets will pressurize the piping when the equipment heats the water, resulting in a hazard for the heating equipment, while the Low-pressure faucets reduce the pressure rise caused by heating equipment and keep the piping system at a low pressure.