Flush control assembly for pressure flush valves

A fluid control assembly connectable to a pressure flush valve having:

• a hollow body having an inlet connectable to a source of water under pressure, and an outlet connectable to a plumbing fixture, and a connection port;
• an upstanding barrel portion in said flush valve having a main valve seat around the top end thereof;
• a flexible diaphragm having a central opening therein surrounded by a main valve seating portion which diaphragm contains a by-pass valve to fill a portion of said body located above the diaphragm with water from said inlet and a detachable inner cover;
• a cylindrical hollow guide member depending from said diaphragm and extending through said barrel portion;
• a relief valve seatable across the diaphragm opening and having an operating stem depending downward through said guide member, which stem is also characterized as having a slidable sleeve attached to and extending downward therefrom;
• an internal detachable cover member positioned above said relief valve and spaced therefrom,
• an actuating assembly attached to a side of the body having an actuating means located within actuating distance of the slidable sleeve for actuating said pressure flush valve by contacting the slidable sleeve of the relief valve stem thereby tilting the relief valve and the diaphragm off of their seat and permitting water to flow through said flush valve, and by so doing causing the slidable sleeve to slide up the relief valve stem and out of contact with said actuating means, thus allowing the relief valve and diaphragm to reseat,
• wherein said fluid control assembly is comprised of a means actuated by the water pressure at the outlet of the flush valve for delaying the return of the slidable sleeve to its normally downward position for preventing the actuating means from actuating the relief valve stem for a pre-determined period of time after the relief valve and the diaphragm reseat.