§890.1720. Water Closets

a)         All water closets shall either be of stainless steel (Type 304) construction, including framework, reinforcing and interior piping, or be vitreous china complying with ASME A112.19.2/CSA B45.1.

 

b)         If stainless steel water closets are used, they shall comply with the following:

 

1)         The bowl and flushing rim shall not be less than 14 gauge.

 

2)         The water closet shall have a minimum of a 3-inch diameter, fully enclosed stainless steel P-trap and shall pass a 2⅛-inch diameter ball.

 

3)         All welds shall be ground smooth, and exterior surfaces polished.

 

4)         Integral contoured seats that are self-draining and crevice freeshall be a part of the water closet.

 

c)         All water closets shall have push button flush valves.

 

(Source:  Amended at 38 Ill. Reg. 9940, effective April 24, 2014)