The Johnson Controls VG7241ET is a 1/2”, normally open globe valve body generally applied for hydronic heating and cooling application. It regulates the flow of water by opening and closing depending on a signal from a pneumatic actuator. When the valve is unlocked or in the state where pressure isn’t applied to close it: the valve opens to let fluids act upon it and flow through the ... https://www.partshnc.com/12-no-18cv-vlv-body