Method and means for mounting valve member on valve stem
AssigneeKeystone International, Inc.
InventorAlan F. Chou
Life of this patent
Estimating the term…
Abstract
A method and means for removably connecting a valve member (62, 62A) on a valve stem (46, 46A) for movement between open and closed positions relative to a valve seat (24, 24A). The removable connection includes a split frustoconical connector (76, 76A) forming two halves (78, 78A) which fit about a frustoconical section (56, 56A) of the valve stem (46, 46A). A retainer sleeve (84, 84A) holds the split connector (76, 76A) about the frustoconical section (56, 56A) of the stem (46, 46A).
Claims16
A valve comprising:
- a valve body having a flow passage therethrough and a bore communicating with the flow passage extending in a perpendicular relation to the flow passage;
- a valve seat about said flow passage;
- a valve housing mounted within said bore adjacent said valve seat;
- a valve stem mounted within said housing having an outer end portion extending outwardly of said housing and an inner end portion extending inwardly of said housing, said inner end portion having an inwardly tapering frustoconical section defining an outwardly facing annular shoulder;
- a valve member having a central bore therethrough receiving said inner end portion of said valve stem and defining an inwardly facing annular shoulder about said central bore in spaced opposed relation to said outwardly facing shoulder on said stem;
- actuating means connected to said stem to move said stem and valve member between open and closed portions relative to said actuating means connected to said stem to move said stem and valve member between open and closed positions relative to said valve seat;
- and
- mounting means within the central bore of said valve member between said inner end portion and said valve member for mounting said valve member on said inner end portion, said mounting means including a connector split into two halves fitting about said inwardly tapering frustoconical section of said inner end portion between and adjacent said opposed shoulders on said valve member and said frustoconical section, said connector halves engaging said opposed shoulder in abutting relation during movement of said valve member and stem to said open position for transmitting an opening force from said actuating means and stem to said valve member, and removable retaining means for retaining said connector halves in position about said frustoconical section.
In a valve having a valve member connected to the end of a stem for movement between open and closed positions relative to a valve seat across a flow passage;
- an improved mounting means for attaching the valve member to a frustoconical section of the stem received by a central bore of the valve member, the valve member and frustoconical section having spaced opposed facing shoulders;
- said improved mounting means comprising:
- a frustoconical connector split into two halves fitting about said frustoconical inner end portion of said stem between and adjacent the opposed shoulders on the valve member and said frustoconical section;
- and
- a removable retainer sleeve about said connector halves for holding said connector halves about said frustoconical section, said connector halves during movement of said stem and valve member to an open position having opposed ends in abutting contact with said opposed shoulders on said stem and valve member for transmitting an opening force from said stem to said valve member for moving said valve member to said open position.
In combination with a plug valve having a valve body with a flow passage therethrough and a hollow valve seat across the flow passage, a hollow plug valve member for said valve seat, and a stem received by said hollow plug valve member for movement of said plug valve member between open and closed positions relative to said valve seat;
- improved mounting means for removably mounting said plug valve member on said stem and comprising:
- a split connector between said stem and said plug valve member forming two halves mounted about said stem;
- a retaining sleeve within said hollow plug valve member about said connector halves and releasable holding means for supporting and maintaining said retaining sleeve about said connector halves for holding said halves against said stem;
- and
- force transmitting means on said stem and said plug valve member engaging opposed ends of said connector upon movement of said valve member to said open position for transmitting an opening force form said stem through said connector to said plug valve member.
A method of assembling a hollow valve member onto a tapered section of a valve stem for moving the valve member between open and closed positions relative to a fixed valve seat;
- said method comprising:
- positioning the tapered section of the stem within the hollow valve member from one open end thereof;
- then mounting from the other open end of the valve member a pair of connector halves about the tapered section of the stem between the stem and valve member;
- and
- next mounting a retaining sleeve within the other open end of the valve member about said pair of connector halves and removably securing said retainer sleeve within the valve member for retaining said connector halves about said tapered section of the stem.
A method of assembling a hollow frustoconical valve member onto an extending end portion of a valve stem for moving the valve member between open and closed positions relative to a fixed valve seat;
- said method comprising:
- providing a central bore through said valve member and forming an inner annular shoulder about said bore facing inwardly;
- providing a frustoconical section on said extending end portion of the valve stem to define an outwardly facing annular should adjacent the end of said valve stem in spaced opposed relation to said inwardly facing shoulder;
- then mounting a pair of frustoconical connector halves about the frustoconical section of the valve stem between the stem and valve member with the connector halves between said opposed annular shoulders;
- and
- next mounting a removable retaining sleeve onto the extending end portion of said stem and about the frustoconical halves for removably retaining said connector halves thereon between said opposed shoulders.
Dependencies are inferred from the claim text.