90-120psi with gauges regulator pressure control switch pump air compressor

this switch is used to control the pressure in the motor-driven air compressor cylinder to operate between two preset pressure values. the working pressure of the safety relief is 120psi. if you adjust the pressure switch over 120psi, you need replace it with new one. the pressure switch has an overflow that allows the air compressor to avoid overload starting. the four-way base interface makes it easier to install the exhaus