Combined valve

Details Combined valve Combined valve

1981-11-30

1984-11-13

Schwadron, Martin P.

Power plants

Motive fluid energized by externally applied heat

Having condition responsive control

13763014, 13763015, 13761419, F01K 1302, F16K 100

Patent

active

044817762

ABSTRACT:
A combined valve including in combination a stop valve for blocking heating steam introduced into a steam turbine and a control valve assembled in a valve casing in opposed relation. The stop valve is located upstream of the control valve with respect to the stream of the heating steam, and the stop valve and the control valve are each formed in the valve body of a main valve thereof with a bypass valve for allowing the heating steam to flow therethrough. The arrangement enables steam to flow in a volume necessary for starting the steam turbine and allows the limitations placed on the stop valve in opening same to be eliminated.

REFERENCES:
patent: 2333455 (1943-11-01), Warren
patent: 3809126 (1974-05-01), Oberle
patent: 3978889 (1976-09-01), Kameda et al.
patent: 4114651 (1978-09-01), Oberle
patent: 4114652 (1978-09-01), Oberle
patent: 4121617 (1978-10-01), Masek et al.
patent: 4384593 (1983-05-01), Keller

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