Suitable for applications that suction inlet is at high vacuum, the must NPSH can reach 0.5m to the minimum, the max. delivery head can reach 100m, especially suitable for applications that suction pipe is extremely long or that operations under high vacuum suction conditions. Suitable for various viscosity or corrosive media. Features 1. Pump must have a low NPSH, about 0.5m~1.5m; 2. Adapt with retarding device, the rotate speed as 130~380rmp; 3. The pump have a high limiting vacuum, and still can reach 95% the speed of 130~380rmp. 4. Strong self-priming capacity 5. low vibration and noise Ordering instructions 1. Models are decided by customers in accordance with the actual circumstances. Make sure to point out parameters upon order such as flow rate, delivery head, suction pressure, media viscosity, ratio, temperature etc. 2. Please inform us if motors are required to have anti-explosion property. Supply range of complete set Swing rotary pump, anti-explosive motor, cast iron integrated base, shaft coupling, basket filter, companion flange. Typical applications 1. Oil pumps for vacuum oil filter; 2. Pumps sucked by vacuum tank; 3. Pumps with long suction pipe for transferring high viscosity media; 4. Pumps sucking from low water level tank 5. Condensate pump