(under the class definition) Subject matter comprising a valve head which only rotates about its axis and has a flow passage within it.
SEE OR SEARCH THIS CLASS, SUBCLASS:
149.2, for rotary valves wherein the rotation is the result of a linear motion of one flow path section with respect to another in the act of joining the sections.
160+, 180+, 188, and 192, for rotary valves having means to increase the head and seat contact pressure.
207, through 209, for rotary valves with graduated ports.
283, for balanced rotary valves. 286+, for rotary valves with limit stops.
292, for rotary valves with detachable actuators.
345, for rotary valves actuated by the valve casing.
SEE OR SEARCH CLASS
137, Fluid Handling,
56, for rotating valves with rotating speed governors, subclass 250 for rotary valves with liquid seals, subclass 311 for rotary regenerative reversing valves, subclass 447 for float arm actuated rotary valves, subclass 616.7 for swing spout actuated rotary valves, subclasses 625.15+, 625.21+, 625.34, 625.41, and 625.46+ for multiway rotary valve units, and subclass 630.21 for rotary, concentric, sequentially actuated valves.
