(under the class definition) Subject matter wherein the valve or its actuator is provided with means such that either may have a plurality of neutral positions and such plural neutral positions are subject to selection.
(1) Note. The reason for such arrangements usually is so that the valve or its actuator may be mounted in different positions, as required by the location or the convenience of the operator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
289, for plural actuators or actuators accessible from plural positions, and see the notes thereto.
SEE OR SEARCH CLASS
137, Fluid Handling,
269+, for convertible devices involving choice between positions but requiring disassembly for making the change.
