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> DWP-S - Motopompe vuotoassistite silenziate

La gamma DWP-S di motopompe vuotoassistite silenziate raffreddate ad acqua sono equipaggiate con una pompa a secco da 50mc/h ad alta efficienza che garantisce un autoadescamento rapido con minimi costi operativi. L’autoadescamento della pompa a membrana a secco garantisce un funzionamento senza interruzioni anche nel caso venga aspirata una grande quantità di aria.

La gamma DWP-S di pompe vuotoassistite possono essere utilizzate in diverse applicazioni: rimozione d’acqua in cantieri e miniere, well point, fognature e by-pass sono solo alcune delle molte applicazioni in cui si possono utilizzare le nostre motopompe.

  • La gamma DWP-S
  • Componenti
  • Principi di funzionamento


    Maintenance work and other repairs are easily executed with the large access doors developed on this innovative range of products.
    Every product in the DWP range has been developed with a 110% self-contained base. The location of the drain plug provides quick and efficient draining when needed.
    The unique product design allows the fitting of a second dry vacuum pump to increase the max flow to 100mc/h if desired. The semi-open twin blade impeller provides significant passage of content for up to 2,000 hours maintenance free due to the investment in high quality diaphragm and valves.
    Optimized pairing of the pump end and engine provide great fuel efficiency enabling the product to operate for several days without refueling. In addition, male and female quick connection points are fitted as standard should an external fuel tank be required.
    Included as a standard feature, male and female external fuel tank quick connectors provide for significant run-time improvement if needed.
    The pump operation is streamlined in part by the simple and straightforward control panel. The panel is protected from the elements with an access door that also houses a safety stop button and RPM throttle.
    The new DWP enclosure was developed with a goal of providing incredible sound attenuation and the powder paint finish ensures high resistance to rust and corrosion
    Our new heavy duty frame and robust skid base. The side forklift pockets and central lifting eye provide multiple transportation options.
    The water cooled Perkins engine with electronic regulator governs the pumps’ flow to match the customer’s desired performance profile in all weather conditions.

After turning on one of our DWP Pumps models, the pump immediately starts sucking water through an inlet pipe 1, without needing the operator making further operations.

Joined to water, also air could be sucked by the pump. In the first step, the not-return valve 2 is on closed position 2A, that is the sphere inside the valve, thanks just to the gravity force, stays on the lower part of the valve, closing it and preventing water and air to pass through, and creating the vacuum inside the hydraulic circuit of the pump.

At the same time the air fills the air/water separator 3. The air is lighter than water, so it moves to the top and comes out from a series of holes that conduct the air to an open extraction pipe 3A connected to the dry vacuum pump.

While air exits from the pipe, the water level into the separator increases, lifting up the inner float. When the float reaches a specific height into the separator, the air extraction pipe is automatically closed 3B.

Therefore, water can’t fill other space into the separator, so it moves to the not return valve; the water pressure increases, moving the sphere of the not return valve in opened position (2B). Water starts flowing into the valve, moving to the outlet pipe 4.

If the water flow stops, the pump will repeat sucking air. In this case the float inside air/water separator will lower and the sucked air will automatically exit through the usual holes in the upper side of the separator, avoiding the danger of breaking the pump.


As well as higher performances, the main benefit of a dry vacuum assisted pump is the fact that the eventual presence of air or dry pumping wouldn’t create any risk for the pump, because air will exit automatically.

On the contrary, with self-priming pumps the eventual presence of air would seize the engine and the mechanical seals in few time, so it would be necessary a constant presence of an operator checking that the pump would exclusively suck water.

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