Valve does not function. Insufficient volume of water to adequately siphon fixture. Low Consumption Valve installed in old, non-Low Consumption fixture. Water Saver Kit installed in old, non-Water Saver bowl. If no gauges are available to properly measure supply pressure or volume of water at the Valve, then completely remove the entire Diaphragm Assembly and open the control stop to allow water to pass through the empty valve.
Valve closes off immediately.
Install inside parts kit to correct above problem and update Flushometer. Closet Relief Valve. The size of the orifice in the by-pass is of the utmost importance for the proper metering of water into the upper chamber of the valve. DO NOT enlarge or damage this orifice. Replace Inside Kit if cleaning does not correct problem.