(under the class definition) Devices in which the valve swings around the means by which it is mounted on the valve seat or casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
177+, for pivoted valves with means to increase head and seat contact pressure.
228, for pivoted valves with reciprocating actuators.
SEE OR SEARCH CLASS
137, Fluid Handling,
448, for float arm actuated pivoted valves, subclasses 520 and 521 for biased open, direct response valves, subclasses 527+ for other direct response pivoted valves and subclasses 625.44+ for multiway pivoted valves.
