ASME A112.19.4 pdf download STAINLESS S’ ‘EEL PLUMBING FIXTURES (DESIGNED FOR RESIDENTIAL USE) 23.3 Kitchen Sink Drainboards. Drainboards (asshown in Tables A7 through A13) shall be fastenedto sink compartments, and shall be formed by stampingpressing, fabrication, or combination thereof. The drairarea of a drainboard sink shall be at least 6 in. (mm) below flood level at a location farthest from...