CFR - Code of Federal Regulations Title 21
(f) Equipment and reagent requirements - (1) Equipment. Rinsing equipment, soda fountain pressure-type hot water, consisting in simplest form of a 1/8-inch- 1/4-inch inside diameter metal tube attached to a hot water line delivering 190 deg.F-200 deg.F water and bent so as to direct a stream of water upward.
