... intellectual property right (Patent No.:ZL02326871.9)The series of Multi-purpose Circulating Water Vacuum Pump takes circulating water as working ... friction between gas and fluid, reduce the noise.D. Double-tap, double-display, can be used alone or in parallel.E ... (L/min)80Lift (m)10Maximum Vacuum Degree (MPa)0.098Single Tap Air Sucking Amount (L/min)10Number of Taps2Safety functionsCheck valueCapacity ...