Promax RG5410 HP Air Conditioning Recovery Unit HVAC Freon Refrigeration Tool 1967 Available in standard (OBS 18) or Location:Upper Available in standard (OBS 18) or dust control version (OBS 18DC) A four channel mixer provides plenty of inputs for your mics HCFC Refrigerants Proprietary “Oil less” compressor capable of handling both liquid and vapor Ergonomic design for easier handling Tough corrosion proof polyethylene blow molded case Field serviceable semi hermetic compressor Self purge feature Includes Filter Drier 550 psi safety cut off switch All units pre wired to accept 80% Tank Shut Off Kit (Part No Recovers all commonly used CFC