8.15.1 Orifices, or water nozzle openings, within reach of patrons shall be designed to minimize finger entrapment.
8.15.2 Equipment shall be designed and constructed to permit control of water pressure and volume to each affect. This control shall be separate, and upstream, of any control valve used by patrons. This control valve shall be accessible to only authorized personnel.
8.15.2.1 Exception: identical effects, with identical flow rates, may share a common control.
8.15.3 Equipment shall be designed and installed to be drainable of water, when not in use."
ASTM International
100 Barr Harbor Drive
West Conshohocken, PA 19428-2959
N.J. Admin. Code § 5:14A-12.7