Z 110V 1/4HP 2 CFM AC Vacuum Pump Kit and AC Gauge Set, Single Stage Rotary Vane Air Vacuum Pump HVAC Gauges, with Three-Color Hose Carry Bag, Applicable to R134a R1234yf R12 R22 R410a

Using high-precision movement, precision 1.6;Anti-impact movement design, high strength rubber sheet sets, prevent impact failure;The valve handle with metal insert designed to increase strength; Manual gauge instructions: When the low-pressure manual valve is opened and the high-pressure manual valve is closed, the low-pressure pipeline is connected with the middle pipeline and the low-precision meter.

At this time, the refrigerant can be filled or discharged from the low-pressure side, and the pressure of the high and low-pressure sides can be detected at the same time.