Pumping device

Details Pumping device Pumping device

F - Mech Eng,Light,Heat,Weapons

04

B

137/75

F04B 41/02 (2006.01) F04F 1/18 (2006.01)

Patent

CA 1180977

ABSTRACT The invention relates to a pumping device for pumping up a liquid, which device comprises a diaphragm pump with a work-dependent stroke and an inlet and an outlet valve to which a suction line and a pressure line respectively are connected. In order to increase the head of liquid the pumping device os characterized in that an air-supply line is conneted to the suction line. In the pressure pump version the first part of the pres- sure line immediately after the outlet valve extends downwards, so that the pump is self-priming. In the suc- tion version a liquid trap in the form of a loop in the suction line itself is arranged in the suction line.

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