TH10 Air Pressure Switches The TH10 pressure switches are used to regulate the tank pressure between two preset values on small ... . No Wire Looping - Visible Contact - No Drift Pressure Setting - Captive Cover Screw - Ample Wiring Room - ... Max off (Cut-out) PSI 100, 150, 175 Differential PSI 20-30, 30-40, 35-55 Factory ... Max off (Cut-out) PSI 100, 150, 175 Differential PSI 20-30, 30-40, 35-55 Factory ...