Pumping system for unstable fluids

Details Pumping system for unstable fluids Pumping system for unstable fluids

F - Mech Eng,Light,Heat,Weapons

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F01B 23/08 (2006.01) B01F 15/04 (2006.01) B05B 7/32 (2006.01) F04B 9/133 (2006.01) F04B 49/24 (2006.01)

Patent

CA 1130150

ABSTRACT OF THE DISCLOSURE A pumping system for delivering unstable fluids under pressure, comprising a pair of alternately operated single-acting pumps operated by a double-acting air motor. The air motor is con- trolled by a reversible spool valve and mechanically operated air pilot valves. The single-acting pumps deliver and contain relative- ly small quantities of the unstable fluid to a positive flow metering system for connection to an outlet to spray guns or other equipment using the fluid. The metering system includes a metering valve, a flow meter and a bypass valve for removing trapped air and presetting flow.

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