3M 16573 Accuspray Air Flow Control Valve Air Inlet is 1/4-Inch, 19 BPS male thread Helps ensure optimal atomization for HVLP paint application, reducing rework Regulator and valve in one unit allows for effortless air pressure setting and control Can also be used with non-Accuspray equipment such as stone chip applicators Gauge provides simple, clear operation and readings for easy adjustment