pressure switch The product is used for the high and low pressure protection of some refrigeration systems, such as residential Type ... auto reset, manual reset2. Pressure range: extra-high (800 ~ 2,200PSI), high (145 ~ 700PSI), low (3 ~ 145PSI), vacuum (-7.4 ~ 0PSI) ... tube welding, copper flare fitting5. Connection: cartridge (terminal), wiring pressure switch The product is used for the high and low ...