Valve and components therefor

Details Valve and components therefor Valve and components therefor

1981-07-06

1984-02-14

Chambers, A. Michael

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

251335B, 251368, 137554, F16K 31122

Patent

active

044311591

ABSTRACT:
An aluminium valve which has a seat of stainless steel. This seat is provided by friction welding stainless steel onto aluminium and then shaping the composite to size. The stainless steel can be covered with stellite. The valve is closed by abutment of a PTFE bush onto the seats. The seat can comprise a slope so that any contaminatory material tends to be forced off the seat by the bush in use.

REFERENCES:
patent: 2101970 (1937-12-01), Wissler
patent: 2584161 (1952-02-01), Scherer
patent: 3052445 (1962-09-01), Kessler
patent: 3095900 (1963-07-01), Newhall
patent: 3185437 (1965-05-01), Rice
patent: 3251575 (1966-05-01), Campbell et al.
patent: 3390943 (1968-07-01), Myers
patent: 4237920 (1980-12-01), Norman

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