Welch 1405W DuoSeal Explosion Proof Vacuum Pump, Rotary Vane, Dual Stage, New, 1405W-01

These Welch 1405 DUOSEAL explosion proof, mechanical vacuum pumps offers an excellent ultimate pressure of 1x10^-4 Torr. They are commonly used for vacuum furnace evacuation, backing turbomolecular pumps, backing diffusion pumps, rotary evaporation, refrigeration system evacuation, epoxy degassing, vacuum sterilization, backing mass spectrometers, freeze drying, vacuum centrifugal applications, vacuum distillation, space research, and other corrosive chemical vacuum processes.

These Welch 1405 DuoSeal vacuum pumps are equipped with a 1-phase explosion proof motor which operates on 115V 60Hz. Each pumps come with a gas ballast; free air displacement of 3.2 CFM, ultimate pressure of 1x10^-4 Torr, oil capacity of 2.25 qts, requires intake tubing of 13/16 inch, and weights 55 lbs. Please refer to the recommendations made in the DuoSeal explosion proof owner's manual, which is available for download below. We recommend Welch DuoSeal oil for this pump. All accessories and oils for this pump can be found on this website.