Patent ID: 6354813
Filing Date: 2002-03-12
Classification: F16K,Y10T

Abstract:
The combination of a three-way-valve and a centrifugal pump, the valve having a primary nipple that branches out into two secondary nipples and with means to guide the flow of the primary nipple alternatively through the first or the second of the secondary nipples, the guide means having two membranes (30, 30â€², 59, 59â€²) which are connected to each other by a traverse (31, 41) and the side of the membrane averted from the flow forms together with a cavity of the valve-housing a membrane chamber (28, 29) into which a hydraulic fluid can be conveyed under pressure, whereby the membrane experiences a reversal from a connection of the primary nipple (27, 47) with a first of the secondary nipples (34, 53) to a connection between the primary nipple (27, 47) and the second (33, 54) of the secondary nipples, said hydraulic fluid being pressured by the ram-pressure of a nozzle (24), which is part of the centrifugal pump (22) and is positioned close to the periphery of the pump-impeller (21).