MULTI-STAGE HIGH PRESSURE PUMPS
Applications
Water supply systems, pressure boosting, fire fighting, boiler feed, irrigation and sprinkler installations, cooling water and hot water circulation, pressurisation in chemial, process and allied industries.
Liquids
Clean or slightly contaminated liquids up to 150 cSt (150mm²/s) viscosity.
Duty Range
- Capacities up t 500 m³/hr
- Heads up to 30 bar (cast iron) or up to 40 bar (special materials)
Construction
Multi-stage ring section pump of robust construction with extra large shaft sction for vibration-free running. For high output pressures additional axial thrust balancing is provided by a balancing piston mounted on a pump shaft.
All wearing parts are renewable without additional work on the casing parts
Shaft sealing either with stuffing box packing or mechanical seal. Bearing housing are protected against the ingress of spray water by means of lip seals.
Under difficult suction conditions (low NPSH-available), the pump can be providd with an axial inlet for cavitation-reducing flow entry pattern into the first stage impeller.
Axial Thrust Compensation
In pumps with a small number of stages, the ball bearings (fixed bearings) absorb the axial thrust.
In pumps with larger number of stages, the axial thrust is equalised by means of a balancing piston mounted on the shaft on the area of the delivery housing.
