Water Closets

Section 890 Section 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.