... electronics, chemicals, pharmaceuticals, universities and other departments.Main features of rotary vane vacuum pump1. Small size, light weight, low noise2. Equipped ... with anti-return oil valve, start convenientTechnical parameters of rotary vane vacuum pumpType2XZ-12XZ-22XZ-4Pumping speed(L/s)124Ultimate ... (v)220220/380220/380weight(kg)162024 2XZ-1 Top Quality Laboratory Rotary Vane Vacuum Pump