Lined check valve

Details Lined check valve Lined check valve

1983-03-30

1986-02-25

Schwadron, Martin P.

Fluid handling

With casing, support, protector or static constructional...

Jacketed

13753331, F16K 1504

Patent

active

045722331

ABSTRACT:
A check valve in which one half of the valve body has a number of integral guide fins extending radially into the flowway. The guide fins are discontinuous from one another at their radially inner ends. A liner on the interior of the valve body follows the contour of the guide fins so that the portions of the liner which cover respective guide fins are likewise discontinuous from one another at their radially inner ends. The thermal properties of the liner differ from those of the guide fins. Each of the guide fins has a transverse bore through which extends an anchoring plug, the plug in turn interconnecting portions of the liner on opposite sides of the guide fins. A valve element longitudinally reciprocable in the flowway includes a closure portion for engagement with a valve seat and an elongate valve stem extending longitudinally from the closure portion and surrounded by and slidably engaged with the lined inner ends of the guide fins.

REFERENCES:
patent: 2202735 (1940-05-01), Johnson
patent: 3498315 (1970-03-01), Graves et al.
patent: 3750698 (1973-08-01), Walchle et al.
patent: 4224961 (1980-09-01), Schnabel
patent: 4368756 (1983-01-01), Carlson
patent: 4437492 (1984-03-01), Taylor

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