.~ Valves with separate, correlated, actuators {3}
637.1
.~.~ Interlocked
DEFINITION
Classification: 137/637.1
(under subclass 637) Devices having plural actuators with interlocking means therebetween, whereby the actuation of one valve is prerequisite to the actuation of another or additional valves, or whereby the opening of one valve precludes the opening of another until such time as the first opened valve has been closed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
383+, for valves in combination with a lock or seal.
SEE OR SEARCH CLASS
251, Valves and Valve Actuation,
89+, for valves with means for blocking or disabling the actuator.
