TITLE 77: PUBLIC HEALTHHome
PART 890 ILLINOIS PLUMBING CODE
CHAPTER I: DEPARTMENT OF PUBLIC HEALTH
SECTION 890.1780 FLUSH VALVES
Section 890.1780 Flush Valves
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.