Advantages Performance has become a forefront of HVACR industry Meet ARI-700 standards Universal for CFC/HCFC/HFC of high&low pressure refrigerants 24-hour continuous working No need for special maintenance when recovery different refrigerants, just use self-purging function. No cross contamination Application Transfer refrigerants on your job-site; Service chillers & other medium cooling systems; Small & medium central A/C factories; On site maintenance of small & medium HVAC/R products Features Oil-free lubricating compressor ¡§C compatible with CFC/HCFC/HFC refrigerants; Self-purging design ¡§C prevent cross contamination; Multi-function valve design- simple operation; Perfect protection system ¡§C safe credibility; Thorough recovery refrigerant and automatic stop when the suction pressure is up to -0.04Mpa Light weight ¡§C air cooled type only 160lbs, water cooled is much lighter 0-1