Bellows-actuated thermostatic steam traps
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United States of America Patent
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Dec 24, 1985
Issued Date -
N/A
app pub date -
Jan 3, 1985
filing date -
Jan 11, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a bellows-actuated thermostatic steam trap (A) having a bellows (41) carrying a valve member (45) of a valve (45/22) for opening and closing the trap, the bellows is disposed between connections (20/21 and 30/31) which are identical to one another so as to be selectively connectable in a steam flow line with the valve (45/22) disposed either downstream of, or upstream of, the bellows (41). The trap includes a metal housing (11/12), the mass of which constitutes at least 70% of the mass of the trap. The trap operates, when connected with the valve disposed downstream of the bellows, in a first mode in which, in normal operation, the trap discharges condensate at a temperature close to saturated steam temperature. When connected with the valve disposed upstream of the bellows, the valve operates in a second mode in which in normal operation condensate is discharged at a temperature significantly below steam temperature. One or other of these modes can be simply obtained, merely be selecting which way round the trap is connected in a flow line.
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