VORRICHTUNG ZUM STEUERN MINDESTENS EINES GASSTROMES.

摘要

A gas flow path has a U-shaped tube with vertical legs (1,2) that has a bottom connection to a valve stage (29) that connects with a mains water unit (11) that is in the form of a loop (5,6). Mains water is supplied (14) to a spray unit (18) in the base. A ball float (20) is supported within a cage (16) and is subjected to the effect of the spray. A second ball float (31) is retained in a tapered cage (29). As the liquid level rises the ball moves upwards to settle between opening prots in the U tube (37,38). Depending upon the direction of gas flow the ball will move against one or other port. The U tube can be ventilated by water flow over the inverted tube (4).