Honeywell VP531C1026/U Pneumatic Radiator Valve 3/4" NPT Straight N.O. 3.3 Cv 2-5 PSI UPC Code: 085267150156

The Honeywell VP531C1026/U Pneumatic Radiator Valve 3/4” NPT is used for accurate proportional control of steam, hot water, or chilled water in HVAC systems like fan coil units, finned-tube radiators, and reheat coils. With a normally open configuration, it has a 3.3 Cv flow capacity and 2–5 PSI spring range, and it responds to pneumatic signals from direct-acting thermostats to modulate flow to maintain desired temperatures. It is easy to fit into narrow enclosures, and the replaceable actuator assembly makes maintenance easy. This valve improves the efficiency of HVAC systems, provides precise temperature control, minimizes energy use and allows for compatibility with several legacy systems.