Dual diaphragm pump

Details Dual diaphragm pump Dual diaphragm pump

F - Mech Eng,Light,Heat,Weapons

04

B

103/36

F04B 43/02 (2006.01) F01L 25/06 (2006.01) F04B 43/073 (2006.01)

Patent

CA 1234720

ABSTRACT OF THE DISCLOSURE A pneumatically operated reciprocating three-way valve having particular application to a double diaphragm pump. The valve is operative without a lubricating oil mist or the inef- ficiency resulting from air leakage between the valve piston and cylinder. Sticking and stalling of the valve piston are pre- vented by deformation of the cylinder under pressure to provide leakage of selected cavities within the valve. The pump also avoids the use of a deicer mist by an adjustable bleed of high pressure air to provide a two step exhaust.

485312

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