Thermally-actuated steam trap

Details Thermally-actuated steam trap Thermally-actuated steam trap

1994-04-29

1995-04-11

Tapolcai, William E.

Automatic temperature and humidity regulation

Traps

Thermostatic

236 93A, 374203, F16T 110

Patent

active

054050782

ABSTRACT:
A thermally-actuated steam trap, which performs the opening and closing operations of a valve according to a change in the volume of an expansible medium, comprises at least two diaphragms and a valve member fitted to the lower diaphragm. The lower diaphragm is shaped so that it comes to be more sensitive to a change in pressure than the upper diaphragm, to provide a steam trap which permits a discharge passage to be opened also when the fluid pressure at the inlet side is relatively week, and which is stable in operation from the initial stage as the opening and closing operations of the valve are performed intermittently.

REFERENCES:
patent: 1109705 (1914-09-01), Serrell et al.
patent: 1628430 (1927-05-01), Ribes
patent: 1808556 (1931-06-01), Jones
patent: 1832291 (1931-11-01), Fitts
patent: 1886500 (1932-11-01), Schmidt
patent: 3534611 (1970-10-01), Hilgert
patent: 4013220 (1977-03-01), Zoller
patent: 4248376 (1981-02-01), Foller
patent: 4295605 (1981-10-01), Clayton et al.
patent: 4681256 (1987-07-01), Dewhirst
patent: 4792090 (1988-12-01), Dewhirst
patent: 4955536 (1990-09-01), Foller et al.

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