Lefoo Quality Pressure Control Switch Valve for Air Compressor 140-175psi 1 Port LF10-1H-1-NPT1/4-140-175 Brand new LEFOO 140-175 PSI air compressor pressure switch MAX PRESSURE: 190 PSI MIN ON: 35 PSI DIFFERENTIAL: 30-40 PSI " SINGLE PORT FEMALE, 2 POLE RATING AMP RATING: Recommended 18 amp MAX, without the use of a magnetic starter