What is a pressure balancing valve and why should I install one on my shower system?
Pressure-balancing valves prevent sudden water temperature changes caused by flushing toilets or running sinks. By adjusting to pressure changes in water coming through the hot and cold supply lines, a piston in the valve automatically opens or closes small inlet ports to maintain a balance in pressure, which in turn keeps the water flowing at an ambient temperature. It reacts instantaneously.
