.~ With flow starting, stopping or maintaining means {7}
143
.~.~ Siphon venting or breaking
DEFINITION
Classification: 137/143
(under subclass 142) Apparatus in which the siphon is provided with means for stopping or regulating the flow through the siphon by admitting air into the siphon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
151, for apparatus including siphons having a valve or closure for controlling the flow of liquid therethrough.
215+, for apparatus for preventing reverse flow siphoning
action in apparatus not normally operating by siphon action.
583+, for distributing systems including a gas vent and at least one other flow opening, and see the search notes to subclasses 583 and 587.
