Mastercool 91200 – Air Operated Vacuum Pump, R12/R134a Fitting

• Requires 4.5 CFM/90 PSI shop air.
• No moving parts, no oil required
• Includes 1/4″ flare (R12) connection and 1/2″ ACME (R134a) connection.

Requires 4.5 CFM/90 PSI shop air. No moving parts, no oil required, 1.3 CFM air displacement venturi type pump will pull up to 29 inches of vacuum (Hg.) at sea level. Includes 1/4″ flare (R12) connection and 1/2″ ACME (R134a) connection.

This pump is designed to evacuate unwanted air and moisture from the air conditioning system. A system that has been opened for repairs or one that is found to be excessively low on refrigerant MUST BE FULLY EVACUATED, first by a recycling/recovery machine and then by a vacuum pump. If there is any refrigerant in the system, by law, it must be evacuated by a recovery or recycling machine. Only after the system has been emptied of refrigerant and the pressure in the system is around zero, can this air-operated pump be used to deep vacuum the system.