초록 ▼

A recessed seat retainer for a valve is secured in an annular recess on the face of a valve body by a totally internally disposed key system which does not create an external leak path. An annular keyway is formed in the cylindrical sidewall of a seat retainer. A key extends from the cylindrical sid

A recessed seat retainer for a valve is secured in an annular recess on the face of a valve body by a totally internally disposed key system which does not create an external leak path. An annular keyway is formed in the cylindrical sidewall of a seat retainer. A key extends from the cylindrical sidewall of an annular recess formed in an axial face of the valve body. The key is received in the keyway and locks the retainer against axial dislodgement from the valve body.

대표청구항 ▼

A valve for minimizing fluid leakage at an interface with an adjacent fluid handling component comprising: (a) a valve body having first and second axial sides with a fluid flow passage extending therethrough from one axial side to the other, said valve body having an annular recess in the first axi

A valve for minimizing fluid leakage at an interface with an adjacent fluid handling component comprising: (a) a valve body having first and second axial sides with a fluid flow passage extending therethrough from one axial side to the other, said valve body having an annular recess in the first axial side, said annular recess circumscribing the fluid flow passage and including an axial end wall and a cylindrical sidewall; (b) a closure member movable in said valve body between open and closed positions for selectively blocking fluid flow through said fluid flow passage; (c) a valve seat disposed in said annular recess about said fluid flow passage, said valve seat being sealingly engageable with said closure member when said closure member is in the closed position; (d) a seat retainer selectively secureable in said annular recess, said valve seat being interposed between said seat retainer and said valve body, said seat retainer having a pair of substantially planar and parallel axial end surfaces and a cylindrical side surface said pair of axial end surfaces being axially spaced by a distance approximately equal to the axial dimension of the sidewall of the annular recess so that one of said pair of axial end surfaces is in substantially co-planar relationship with said first axial side of the valve body when the other of the pair of axial end surfaces engages the axial end wall of the annular recess, one of the seat retainer walls having an annular keyway; and (e) a closed ended keyseat formed in the cylindrical sidewall of the annular recess; (f) at least one key member disposed in the keyseat axially spaced from the first axial side of the valve body and extending from a wall of the annular recess into the annular keyway for holding said seat retainer in said annular recess and securing said valve seat relatively to said valve body, said at least one key member being rigidly secured against radial movement and mounted in the annular recess without creating an external leak path for a fluid media in said fluid flow passage.