.~ With separate connected fluid reactor surface {8}
495
.~.~ With manual or external control for line valve
DEFINITION
Classification: 137/495
(under subclass 494) Apparatus which include in addition to the fluid actuated reactor surface, a manual or other external means for operating or for causing the operation of the same valve.
(1) Note. Modifiers, which merely vary the loading or response of the reactor surface, are not deemed to constitute manual or other external means within this definition. For such modifiers search should be made in the subclass receiving the particular type of fluid actuator. See the class definition, section 3 for search notes on plural actuators including at least one automatic actuator and section 5 for search notes on manual actuators and adjusting and resetting devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.01+, for systems having a valve controlled surge relief by-pass operated by a means to sense a change in pressure (surge) in the main flow line such as may be caused by the operation of a controlling valve.
481, for suction controlled valves which are manually modified or adjusted.
522+, for direct response valves in combination with external means for opposing the closing bias.
613+, for systems comprising plural valves arranged in series in the flow line wherein manual or external means operate one valve to produce a change in the condition in the flow line in order to utilize such changed condition to effect automatic operation of the other valve in the flow line.
