Service Sinks/Lavatory

Section 890 Section 890.1750  Service Sinks/Lavatory a)         Service sinks/lavatories shall be either stainless steel, cast iron complying with ASME A112.19.1/CSA B45.2, or vitreous china complying with ASME A112.19.2/CSA B45.1. Stainless steel service sinks/lavatories shall be fabricated of Type 304 stainless steel with the exterior surfaces polished; all exposed welds are to be ground smooth, and there shall be no visible voids, seams or crevices. b)         Security sink/lavatory shall include a self-closing valve set with integral stops, gate or globe valves, reversible union inlets and plain-end filler spout, or a grid strainer drain, elbow waste with a 2-inch female connection.  Timing of control valves shall be field adjustable from five to 40 seconds and shall not require shutting off the supply lines. c)         The waste assembly shall comply with Section 890.410(g)(1) and be of brass, copper or bronze construction. d)         Drains with mechanical air vents are prohibited.