(under subclass 142) Subject matter wherein the valve controls a flow path which is located on the side of a pipe, the valve being secured or applied to the side of the pipe or comprising a unitary flow passage and controller applied to an outlet in the circumferential wall of the pipe.
SEE OR SEARCH CLASS
137, Fluid Handling,
143, for siphon venting or breaking, subclasses 173+, 177+, 197+ and 203 for outlets for either gas or liquids in fluid separating traps, subclasses 216+ for back-flow preventing air vents in liquid flow lines, subclasses 272+ for hydrant valves in water mains, especially subclass 299 for valves for hydrant outlets, subclasses 317+ for devices for tapping a pipe under pressure, subclass 480 for auxiliary inlet valves in combustion engine induction lines, subclasses 596+ for distribution systems involving drain or stop and waste valves, and see the search notes thereto and subclasses 872+ for distribution systems having a flow control means for plural passages comprising a valve or deflector at the junction of such passages.
