Wilkerson R28-04-F000B Air Pressure Regulator 170 SCFM 1/2" NPT 5-125 PSI

The Wilkerson R28-04-F000B Air Pressure Regulator is a pneumatic control unit designed to maintain and adjust downstream air pressure in compressed air systems. It operates with a flow capacity of 170 SCFM, supports 1/2-inch NPT threaded connections for installation into standard piping, and allows adjustable regulation within a 5 to 125 PSI range to stabilize pressure output. In HVAC systems, it is commonly applied in air handling units, control circuits, and pneumatic instrumentation lines to manage air supply consistency. The regulator works as a control element that modulates pressure levels to ensure steady and reliable system performance.