USER REPLACEABLE PUMPING CHAMBER
    2.
    发明专利

    公开(公告)号:CA2112859A1

    公开(公告)日:1994-09-04

    申请号:CA2112859

    申请日:1994-01-05

    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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