Crossarm valve seat with pulling ledge

Details Crossarm valve seat with pulling ledge Crossarm valve seat with pulling ledge

1988-06-29

1990-05-29

Nilson, Robert G.

Fluid handling

With repair, tapping, assembly, or disassembly means

With disassembly tool engaging feature

13751629, 417454, F16K 1502

Patent

active

049287265

ABSTRACT:
A valve seat member (18) presenting a valve seat surface (20) at one end against which an associated valve (16) seals. A valve stem guide (36) is supported in a central flow passage (34) of the valve seat member (18) by two diametrically opposed arms (38). An annular abutment surface (44) extends radially into the flow passage (34) and is spaced axially below the valve seat surface (20) and above the arms (38) for providing a ledge with which a removal tool (42) engages to extract the valve seat member (18) from a slush pump deck (12). The associated valve (16) includes a valve body (72) having a shape defined by a segment of a sphere centered at the apex (70) of a cone (68) which simultaneously defines the shape of a peripheral sealing face (74) of the valve body (72) and the shape of the valve seat surface (20).

REFERENCES:
patent: 1721114 (1929-07-01), Hampton et al.
patent: 2271137 (1942-01-01), Hamer
patent: 2447729 (1948-08-01), Bertea
patent: 2505992 (1950-05-01), Rike et al.
patent: 3107895 (1963-10-01), Vogeli
patent: 3474808 (1969-10-01), Elliott
patent: 3742976 (1973-07-01), Bailey
patent: 3811470 (1974-05-01), Schaefer
patent: 4180097 (1979-12-01), Sjoberg
patent: 4520842 (1985-06-01), Elliott
patent: 4632141 (1986-12-01), Post

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