(under subclass 395) Apparatus in which a means sensing a predetermined, usually high, liquid level or a full condition of a tank which is accumulating liquid controls the opening of the tank outlet, allowing the liquid to discharge, and the closing of the outlet at a low level or when the tank is empty, the cycle being repeated as long as liquid is supplied to the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
102+, for the supply and exhaust type of self-controlling system, e.g., hydraulic cycle devices and pulsators.
132+, for tanks which are periodically discharged by means of
a siphon.
156+, for self emptying tanks, usually comprising boiler feed traps, emptied by gas pressure, especially subclasses 165+ for those controlled by floats.
391, for tanks with liquid level responsive control of both inflow and outflow. SEE OR SEARCH CLASS
251, Valves and Valve Actuation,
12+, for fluid actuated or retarded device receiving liquid diverted from the main line and controlling a valve in the main line in accordance with the quantity of diverted liquid accumulated.
