The PD-Pump offers material handling at a highly efficient material to air ratio. Low transfer velocity economizes on air consumption and allows for conveying pipes with longer life, without need for supplementary airlines. PD-Pump can convey materials from 100 meters to 1000 meters.

The PD-Pump consists of a vessel shell with Dome valves at inlet and outlet of vessel. At rest there is no airflow into the vessel and no airflow into the conveying line. A conveying cycle consists of opening the inlet Dome Valve and fill to the level, the Dome Valve closes and the air valve is opened to pressurize the vessel with outlet valve closed and sealed. At the predetermined pressure, typically (0.7 to 1.2 bar) sensed by a pressure switch, the discharge Dome valve opens quickly while the conveying air remains ON. The conveying air valves remain open until the vessel pressure falls (0.3 to 0.6 bar) at which time the conveying air valve closes, the discharge valve closes and the vent valve opens.

1. A batch transfer vessel, similar in concept to the standard Denseveyor, with additional capabilities.
2. Developed for maximum economy, utilizes small bore pipelines operating at low conveying pressures, with reduced air flow and hence power consumption.
3. Suitable for transfer of dry, fluidizable materials.