High-Speed Air-Cooled Roots Vacuum Pump

The ZJQ series is a high-speed, air-cooled roots vacuum pump that keeps running under high-pressure conditions without overheating, thanks to a gas-cooling design that lets it start against higher inlet pressures than a conventional roots pump. With a backing pump it reaches 0.05 Pa absolute, and standalone it works down to about 20,000 Pa. It serves vacuum smelting, drying, impregnation, distillation and degassing, aeronautical simulation testing, gas transport and power-station vacuuming, with speeds from 450 to 3,750 L/s.