The new Welch 1397B-46 refrigeration vacuum pump is built on the great DuoSeal belt driven design, being durable with a superior vapor handling capability. These vacuum pumps are built to handle the harshest refrigeration chiller servicing application. The Welch 1397B-46 offers an excellent ultimate pressure of 1x10-4 Torr, has a pumping speed displacement of 17.7 CFM, operates on 115/230 VAC, 1 HP motor, oil capacity: 1.25 qt, pump RMP: 400, has a intake female SAE Flare 1-1/2 inches, and exhaust type of 1.75-20 thread.

These pumps are designed for removing air and moisture from industrial and commercial chillers. They are rated for ultra low-vacuum at 30 inch and continuous duty operation. These pumps include a gas ballast valve that inhibits water condensation and reduces corrosion. The Welch 1397B features ruggedness and dependability due to their all metal internal construction. These Welch 1397B refrigeration series DuoSeal belt drive vacuum pumps are brand new with full manufacturer warranty included. (product number 1397B-46).