Atlas Copco 1622369480 Blow Off Valve Assembly

The Atlas Copco 1622369480 blow off valve is an OEM component designed for oil-injected rotary screw air compressors. It functions as an unloader valve to vent sump pressure during unload cycles, enabling efficient restart and preventing compressor surge. The assembly integrates a solenoid-operated mechanism for precise load and unload control. Constructed with engineering plastic housing and chrome-molybdenum steel internal components, the valve withstands continuous industrial duty cycles. It serves as a direct replacement for part numbers 1623181080 and 1622-3694-80. Compatible with Atlas Copco GA series compressors including GA15, GA18, GA22, GA45-110C, and GA90-160, as well as Chicago Pneumatic and Dynapac branded units.