ARKSEN Vacuum Pump (4CFM, 1/3HP) & A/C Refrigeration Manifold Gauge (R134A) R134A Manifold Gauges A/C Tester Freon Gas Service Diagnostic AC Kit Power Voltage: 110V, 60Hz; Motor Power: 1/3HP, 4 CFM; Pump Speed: 1720 RPM Each coupler have a shut off valve to prevent loss of refrigerant Burst pressure: 3000PSI; Max working pressure 600PSI 4 CFM Single-Stage Rotary Vane Vacuum Pump 10Pa VACUUM