A commercial water supply system is to be sized for a flushometer valve waterclosets and urinals as well as vented fixtures shown. The dotted line is the hot water supply piping. What is the minimum allowable size meter? “D”? “H”?

A commercial water supply system is to be sized for a flushometer valve waterclosets and urinals as well as vented fixtures shown. The dotted line is the hot water supply piping. What is the minimum allowable size meter? “D”? “H”?