... Pressure Switch 1.Reset method: auto reset, manual reset 2.Fitting structure: copper tube welding, copper flare fitting HVAC The pressure ... control is used for high and low pressure protection of some refrigeration systems, residential ... 1. Reset method: auto reset, manual reset2. Pressure range: extra-high (800 ~ 2,200PSI), high (145 ~ 700PSI), low (3 ~ 145PSI), ...