4090HK17, 4090K17 #01B4E8
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Model Numbers: 4090HK17, 4090K17
Repair Parts for Rol-Air 4090HK17, 4090K17 Portable Single Stage Oil-Bath Gas Air Compressor
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Pilot Unloader Valve, Cut-In/Cut-Out PSI is 105/135 PSI #1162AD
Price: $51.53Old Part Numbers: 131B, MF131B, BG1-M-135Air compressor pilot unloader valve. The pilot/unloader valve is the "brains" of the air compressor and senses the tank pressure to load and unload the unit.Specifications Cut-In/Cut-Out PSI: 105/135 PSI 1/4"...Price: $51.53