User replaceable pumping chamber

Details User replaceable pumping chamber User replaceable pumping chamber

B - Operations, Transporting

05

B

B05B 9/043 (2006.01) B05B 15/00 (2006.01) F04B 37/10 (2006.01) F04B 53/14 (2006.01) F04B 53/16 (2006.01)

Patent

CA 2112859

ABSTRACT A user-replaceable pumping chamber for a consumer piston pump has a reciprocating piston seal secured to the end of a piston by a threaded fastener. The chamber further has a smooth-bored cylindrical sleeve surrounding the seal to form a cylindrical wall for the chamber. The seal is retained to the piston by a threaded shoulder screw and washer acting against an O-ring in an end face of the seal. The housing has an aperture providing access to the cylindrical sleeve to permit levering a worn sleeve out of the housing.

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