(under subclass 142) Subject matter wherein the flow path is a pipe, the closing-element seating against the end thereof or against a seat surrounding or immediately within the end.
SEE OR SEARCH THIS CLASS, SUBCLASS:
299+, for pivoted valves mounted externally of the valve body.
SEE OR SEARCH CLASS
137, Fluid Handling,
223+, for tire filling chucks and/or stems, subclasses 409+ for float controlled valves, especially subclasses 442+ for terminal float arm operated valves of the reciprocating type, subclasses 469+ for pop type safety valves and subclass 562 and 603 for faucet attached flow elements.
