Dual mode bellows-actuated thermostatic steam trap
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United States of America Patent
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-
Oct 29, 1985
Grant Date -
N/A
app pub date -
Jan 11, 1984
filing date -
Jan 11, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thermostatic steam trap, which operates either as a blast trap or a liquid expansion trap, depending solely on reversal of inlet and outlet function, has a generally cylindrical housing containing an internal cavity. The housing has two parts, the first of which contains a passage leading to a valve seat and the second of which contains a passage leading, via a plurality of bores, to the cavity. Within the cavity is a bellows, filled with a volatile liquid, having a valve on its top which mates with the valve seat and connected at its bottom to the second housing part. The connection is pivotal to permit self-centering of the valve. Either passage can serve as an inlet depending on which operating modality is desired.
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