Section R18-5-224. Piping and Fittings

A.       The water velocity in discharge piping for public and semipub- lic swimming pools and spas shall not exceed 10 feet per sec- ond, except for copper discharge piping where the velocity shall not exceed 8 feet per second. The water velocity in suc- tion piping shall not exceed 6 feet per second. Piping shall be sized to permit the rated flows for filtering and cleaning with- out exceeding the maximum head of the pump.

B.       Water circulation system piping and fittings shall  be con- structed of materials that are able to withstand 150% of normal operating pressures. Suction piping shall be of sufficient strength so that it does not collapse when there is a complete shutoff of flow on the suction side of the pump. A licensed Arizona contractor shall conduct an induced static hydraulic pressure test of the water circulation system  piping at 25 pounds per square inch for at least 30 minutes. The pressure test shall be performed before the deck is poured. Pressure in the water circulation system piping shall be maintained during the deck pour.

C.       Water circulation piping and fittings shall be made of non- toxic, corrosion-resistant materials.

D.       Water circulation piping and fittings shall be installed so that piping or fittings do not project into a public or semipublic swimming pool or spa in a manner that is hazardous to users.

E.       Piping that is subject to damage by freezing shall have a uni- form slope in one direction and shall be equipped with valves that will permit the complete drainage of the water in the swimming pool or spa.

F.        Piping shall be designed to drain the swimming pool or spa water by removing drain plugs, manipulating valves, or other means.

G.       Piping systems shall be identified by color or by stencils or labels located at conspicuous points.

H.       Plastic water circulation piping shall comply with American National Standard/NSF International Standard Number 14, “Plastics Piping System Components and Related Materials,” NSF International, 3475 Plymouth Road, P.O. Box 130140, Ann Arbor, Michigan [revised September, 1996, and no future editions] which is incorporated by reference and on file with the Office of the Secretary of State and the Department.

Historical Note

Adopted effective February 19, 1998 (Supp. 98-1).