Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1990-10-29
1992-02-18
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Direct response valves
137902, 251332, F16K 1506
Patent
active
050885219
ABSTRACT:
A valve for use in a valve housing which forms a flow passage, an annular valve seat being provided in the passage and the seat forming an annular seal surface, the housing, the seat and the passage being concentric on a valve axis. The valve includes a valve body which reciprocates on the axis in the housing toward and away from the seat, guide means on the valve body for slidingly engaging the seat and guiding the reciprocation of the valve body on the axis, and an annular insert mounted on the valve body adjacent the seal surface and concentric with the axis. The insert comprises a rigid part and a resilient elastomeric seal part, the rigid and seal parts being bonded together. The valve body includes a radially extending portion having an outer periphery and a groove formed in the outer periphery, the insert being mounted in the groove with the seal part facing the seal surface. The outer periphery of the radially extending portion includes a flange which overlies the groove and the insert, the flange engaging and supporting the rigid part. An interlock is also provided between the insert and the radially extending portion.
REFERENCES:
patent: 2457492 (1948-12-01), Raybould
patent: 3053500 (1962-09-01), Atkinson
patent: 3191617 (1965-06-01), Maddox
patent: 4487222 (1984-12-01), Crawford
patent: 4518329 (1985-05-01), Weaver
patent: 4860995 (1989-08-01), Rogers
Harrisburg, Inc.
Nilson Robert G.
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