These Welch Chemstar Chemical 1400N Major kits include all the components of the gasket kit plus vanes, v-belts, exhaust valves and springs for a major rebuilt or overhaul. The rotary pump vanes are included in these major rebuild and repair kits. The shaft seal assembly in these kits are made from lip-type seals. These Welch 1400N repair kits are guaranteed to meet or exceed OEM specifications.

The Welch 1400N ChemStar belt drive rotary vane with Explosion Proof Motor is a durable vacuum pump with a superior vapor handling capability. The ChemStar pumps are a chemical resistant series which offers an excellent ultimate pressure of 1x10^-4 Torr. The Welch 1400N pumps have a pumping speed displacement of 0.9 CFM, operates on 115 VAC., pump 580 RMP, oil capacity of 0.62 qt., and the pump includes a gas ballast. These pumps are complete with explosion proof motor horsepower, 1-phase, includes KF-16 flange to 3/4-20 thread adapters for both intake and exhaust, weighs 58 lbs., and dimensions LxWxH, 18x9x13 in. The Welch 1400N ChemStar belt drive rotary vane with explosion proof motor is a durable vacuum pump with a superior vapor handling capability, primarily for pumping corrosive gasses. These pumps 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.

The Welch 1402N CHEMSTAR belt drive dual stage rotary vane vacuum pump with Explosion Proof Motor is a durable vacuum pump with a superior vapor handling capability. The ChemStar pumps are the chemical resistant series and offers an excellent ultimate pressure of 1x10^-4 Torr. They have a pumping speed displacement of 5.6 CFM, operates on 115 VAC., pump 525 RMP, oil capacity 2.25 qt., and the pump includes a gas ballast. These pumps are complete with 1-phase explosion proof motor horsepower, includes KF-25 flange to thread adapters for both intake and exhaust, weighs 133 lbs., and has dimensions LxWxH, 20x14x15.5 in.