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TECHNICAL DATA
WHA/WHP pumps - general application
The WHA/WHP pumps are horizontal multistage pumps with a self-priming member, designed for pumping water at temperatures of up to 140oC and liquid fuels and other liquids within the range of resistance of the materials used for their construction. In the WHA/WHP pumps the discharge flange is directed upwards, when the suction flange can be set as desired every 90o. The first stage of the pump is equipped with a special impeller with increased anti cavitation properties. The impellers of the WHA/WHP pumps are sealed with replaceable wear rings. The shaſt is protected with protective sleeves and sealed with gland packing or front mechanical sealing. High pressure in the discharge gland is reduced with a special pressure stuffing system, which reduces substantially the sealing load.WHS pumps - with self-priming member
The WHS pumps are horizontal multistage pumps with a self-priming member, designed for pumping water at temperatures of up to 80oC and liquid fuels and other liquids within the range of resistance of the materials used for their construction. The WHS pumps are the special development of the WHA pump, in which aſter the last stage an additional circulation-vacuum member was applied. The ability of self-priming is executed by the circulation member with side channels and an open impeller, which sucks gas from the inlet space of the centrifugal impeller of the last stage via unloading holes and pumps it directly to the discharge casing. This solution enables suction of the gas from the working space of the pump and the suction installation, resulting in lack of the need for application of additional priming systems. The WHS pump sucks by itself the liquid from the tank located below the pump axis, provided its previous priming.WHI pumps - with an initial impeller with lowered NPSH
A pump of general purpose, adapted to pump a medium in temperature up to 140oC within the resistance range of the materials used for its construction with increased suction properties (with lowered NPSH). The pump is provided with an additional initial axial impeller mounted before the centrifugal impeller of the first stage in the suction casing with the axial inlet, which results in the fact that the required anti-cavitation NPSH surplus of the WHI pump is lower than for the WHA pump.WHG pumps - with the self-priming member and the initial impeller
A self-priming pump, adapted to pumping of the medium with temperatures of up to 80oC within the resistance range of the material used for its construction, with increased suction properties (with lowered NPSH). The WHG pump sucks by itself the liquid from the tank located below the pump axis, provided its previous priming. The ability of self-priming is performed identically as in the WHS pump. The WHG pump is provided with an additional initial axial impeller mounted before the centrifugal impeller of the first stage in the suction casing and with the axial inlet, which results in the fact that the required anti cavitation NPSH surplus is lower than for the WHA and WHS pumps.Principle of operation of the self-priming stage:
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Hydro-Vacuum S.A. Pump Selection Progam.
Quick and simple online tool for pump selection based on set criteria.Wyroby powiązane z pompą