Metrex Valve 800PR75SE 3/4 Inch 2W Regulator Valve Reverse Act

The Metrex Valve 800PR75SE is a 3/4-inch, two-way regulating valve with reverse action intended for use in a variety of hydronic heating and cooling systems. It works by carefully regulating the fluid flow within the system, which is often water or water-glycol combinations. The fluid pressure that is flowing through the valve is detected by an internal component. The internal parts and valve stem are made to respond to pressure that is measured. In "reverse action," the valve stem opens wider to let more flow when the pressure rises over a certain point. On the other hand, the valve stem closes to limit flow when the pressure drops below the set point.