Structure for sealing and affixing a cover on a valve body and m

Details Structure for sealing and affixing a cover on a valve body and m Structure for sealing and affixing a cover on a valve body and m

1988-06-29

1989-07-18

Chambers, A. Michael

Valves and valve actuation

Valve

Bodies

137315, 277 2, F16K 5100

Patent

active

048487309

ABSTRACT:
A valve body having an opening and a cover for closing the opening is provided with confronting sealing surfaces each having a circumferential recess of a specific shape to receive an elastic sealing ring; the sealing ring is provided with a tab which projects externally of the valve when assembled to indicate to proper positioning of the seal ring upon assembly; a process for manufacturing mold parts using a lost foam method includes replicating a valve part in styrene, forming a sand mold about the styrene and then pouring molten metal into the mold to destroy the styrene and fill the mold cavity thus formed.

REFERENCES:
patent: 3110471 (1963-11-01), Kuhles
patent: 3185178 (1965-05-01), Bonnard
patent: 3963214 (1976-06-01), Hackman et al.
patent: 4607821 (1986-08-01), David

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