1.single stage vacuum pump,vacuum pump,pump,two stage vacuum pump,pump,refrigeration tool,double stage vacuum pump, rotary vacuum pump
2.220V/50HZ,110V/60HZ
3.different flow rate
4.we can supply different models,pls contact me for more information.
Pls contact me for more information,we also deal with many other HVAC spare parts,i will reply in time.