Control valve assembly for a cistern flushing apparatus

Claim 1

A control valve assembly for a cistern flushing apparatus, the assembly comprising: (a) a single valve housing locatable inside the cistern and having a first, threaded end dimensioned to pass outwardly through a hole in the wall of the cistern; (b) a first collar threadable on the first end of the valve housing inside the cistern; (c) a second collar threadable onto the first end of the valve housing outside the cistern, the first and second collars being oversized with respect to the hole in the wall of the cistern and being movable relative to one another on the first end of the valve housing to sandwich the wall of the cistern between them and secure the valve housing to that wall; (d) a cap for mounting on said second collar; (e) retaining means mounted on said second collar and said cap for retaining said cap and second collar relative to each other; (f) a pair of liquid flow passages each extending in the valve housing between an inlet and an outlet; (g) valve means for each passage, the valve means being independently actuable to control liquid flow through the passages from inlet to outlet; and (h) a pair of push-buttons each of which is associated with one of the valve mans; (i) said cap being clipped to the second collar outside the housing by engaging said retaining means on said second collar and said cap for mounting the push-buttons to protrude outwardly in side-by-side relationship through the cap for providing external, manually accessible push-buttons being selectively depressible to actuate a selective valve means.