Model RRO - Positive Displacement Pump
Designed and built in accordance with API 676 norms, Cerpelli' RRLO represent the evolution of 100 years of experience in the field of design and construction of twin screw volumetric pumps. The pumps are self-priming and can convey fluids containing gas or air.
The wear-resistant inner casing can be cast in a wide range of materials depending on pumped fluid characteristics . Wear-resistant surface treatments are also available as option. Optional steam or hot fluid heating chamber is available upon request. Screw shafts machined out of forged mono block pieces or bars, hardened steel gears fitted directly on the rotors and over dimensioned roller bearings assure smooth and reliable operation of the RRLOpumps. All series RRLO pumps are supplied including relief valves, which can respond to particular requirements of the plant and according to latest rules such as API 520. Several constructive features including external or internal bearing and vertical configuration can be supplied depending on the application