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Marine Three Screw Spindle Pumps - BVVP
vertical execution
Marine Three Spindle Screw Pumps:
The Screw spindle pumps are positive displacement rotary type pumps. The main working parts of the pumps are three helical spindles and the pump housing. The helical spindles or screws can be compared with a gear having a very long, curved tooth, or with a piston pump with an indefinite numbers of pistons.
Technical data:
CapacityUp to 3300 l/min
HeadUp to 80 bar
Viscosity12 - 800 cst
TemperatureCast Iron up to 180°C
Steel case up to 260°C
Advantages:
The pumped medium is transported axially without turbulence and mixing, thus making possible pumping of very viscous fluids without foaming. The working volume of the pump remains unchanged and moves from the suction to the discharge chamber, ensuring in this way a continuous rate of discharge. Noiseless operation, long service life and high overall efficiency.
Marine Three Screw Spindle Pumps BVVP
Design Features:
The pumps are built both as horizontal and vertical executions. The pumps are equipped with an overflow relief valve, on specific order we deliver also hand operated relief valve. The pumps are hydraulically balanced and free of axial forces. As standard, oil leap seal are mounted and they are relieved so they are operating under suction pressure. On order mechanical seal is available.
Application:
The screw pumps are intended for pumping of viscous liquids possessing lubricating properties without mechanical contaminants. Fluids that may be pumped include: all sorts of vegetables, animal and mineral oils, fuel oils. Main fields of application: loading and discharging of tankers and lorry tanks, lubrication of machines, motors, turbines, supply of power to hydraulic systems, loading oil burners.
Casing:
High tensile, close-grained cast iron. Optional cast steel. Steam jacket available on steel cased pump.
Rotor housing:
Pearlitic gray iron.
Shaft seal:
Seal lips or mechanical seals with material combinations depends on working conditions.
Rotation:
Clockwise facing pump shaft.
Mounting:
May be foot mounted in any attitude. Vertical mounted available for such executions.
Filtering:
Inlet strainers are required to keep contaminants and abrasives out of the pump. They must be selected in consultation with us or strainer vendor to prevent pump starvation.
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