1. Multistage liner with accurate location to ensure the liner assembling precision.

2. Copper alloy material with high strength and reliable adhesive resistance.

3. High pressure balance type is used for idler rotors axial force to ensure stable and reliable pump operation.

4. Fabricated steel pump casing for high strength and safe pump performance.

5. Nitrided alloy steel is used for rotors with the surface hardness and abrasive resistance being greatly improved. Pump efficiency at high pressure operation is guaranteed due to precise rotor machining with high aspect ratio.