.~ Tank with internally extending flow guide, pipe or conduit {3}
591
.~.~ Inverted "U" passage
DEFINITION
Classification: 137/591
(under subclass 590) Systems in which the internally extending pipe comprises a conduit of inverted U-shape.
(1) Note. In order that the conduit be considered U-shaped, the shorter leg must be of substantial length.
SEE OR SEARCH THIS CLASS, SUBCLASS:
123+, for siphon type fluid handling devices.
216+, for antisiphon devices wherein an inverted U-shaped pipe is provided with a vent at the highest point to prevent back flow, the normal use of the device not being as a siphon.
440, for float arm operated valve associated with a U-shaped inlet, usually mounted in a tank.
