.~ Hot and cold water system having a connection from the hot to the cold channel
DEFINITION
Classification: 137/337
(under subclass 334) Fluid handling systems comprising hot and cold water systems having a cross connection from the hot water channel to the cold water channel to permit flow of hot water to the cold water channel.
(1) Note. This subclass includes antifreeze thermosiphons and no-drain devices for hot water tanks.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59+, and 118+, for flow diverting means responsive to freezing or other temperature variations.
563+, for distribution systems providing continuous circulation of fluid therein, especially subclass 564 for thermal circulating systems.
602+, for systems comprising multiple inlets with a single outlet, especially subclasses 888+ and 896+ for mixing valves; and see the search notes to subclasses 888 and 896.
