The Balgdon pump is basically two pumps in one. Chamber A & B are alternatively filled and emptied by drawing fluid a common inlet (C) and out through a common outlet (D). The diaphragms in each chamber are link by a common shaft so that they move backwards and forwards in unison. Compressed air is directed by the air valve (E) alternatively behind each diaphragm to power discharge strokes. Pump speed , fluid output and pressure (or head) is controlled by increasing or decreasing the flow of air to the pump.

OPERATION SEQUENCE

The red arrows show the pump cycle. Fluid is being drawn into inlet (C) by the suction stroke of the diaphragm in chamber B, which opens the ball valve (2) to allow liquid to enter the chamber. Bali valve (4) is closed by the diaphragm suction. In chamber (A) air has been applied to the rear of the diaphragm to force out the liquid in the chamber through the ball valve (3) to the liquid outlet (D). This discharge stroke closes ball valve (1) to prevent further liquid entering the chamber. This cycle is repeated to provide a continuous flow to outlet D.

Blagdon offers an extensive pump range for handling fluid media safely and cost effectively. Low cost ownership is a particular feature achieved through a policy combining high quality ear parts with low price spares. We offer a wide choice of accessories which can be supplied separately or packaged with the pump as you require. The flexible modular design  of pumps enables us to offer short lead times and a high degree of customising. Popular models are available ex-stock. Safe in hazardous areas - Non sparking - Air driven.