Honeywell VP513

Honeywell's VP513 single-seated water valves are high-pressure pneumatically operated valves. The VP513A water valves are normally open, and the VP513B water valves are normally closed. Both VP513A and VP513B valves support nominal valve body ratings of 250 psi and maximum body temperatures of 250 degrees Fahrenheit. These valves provide proportional control to air conditioners that use cold and/or hot water. When the system's temperature controller increases the control air pressure on the VP513 valves, the pressure drives the VP513A valves closed, and the VP513 valves open to modulate the flow of water through the coil.