AUTHORITY: Implementing and authorized by Section 35 of the Illinois Plumbing License Law [225 ILCS 320].DEPARTMENT OF PUBLIC HEALTH
a) All flush valves for water closets or urinals shall conform with Sections 890.650(e) and 890.660(b) of this Part.
b) All flush valves shall feature rubber diaphragm operation, non-hold-open push buttons (and handles), union check stops and vacuum breakers as approved in this Part. (See Sections 890.1130(c) and 890.1140(a) and (b).)
c) Flush valves shall be concealed wherever possible.