Fluid handling – Systems – Sequentially progressive opening or closing of plural valves
Patent
1976-04-29
1978-09-19
Schwadron, Martin P.
Fluid handling
Systems
Sequentially progressive opening or closing of plural valves
137613, 13763015, 251 25, F16K 100
Patent
active
041146522
ABSTRACT:
A combined stop and control valve for turbine installations and in particular a steam turbine in which the bodies of independently operable stop and control valve components are arranged co-axially to one another in a common housing. The stop valve body has a bell-shaped configuration terminating in an annular seating surface and includes a servo piston component operating in a cylinder and an associated pilot valve for controlling steam entry into the cylinder from the steam chamber. The control valve body includes a bulb-shaped head connected to one end of a spindle, and the other end of this spindle terminates in a servo piston component operating in a cylinder and an associated pilot valve for controlling steam entry into the cylinder from the steam chamber by way of a longitudinal bore through the spindle and valve head.
REFERENCES:
patent: 2426941 (1947-09-01), Mercier
patent: 2919101 (1959-12-01), Black
patent: 3729167 (1973-04-01), Gulich
patent: 3809126 (1974-05-01), Oberle
BBC Brown Boveri & Company Limited
Gerard Richard
Schwadron Martin P.
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