§ 14a.54. Pipe joints.
(a) Joints shall be made liquid-tight and shall be either welded, flanged or threaded, except that listed flexible connectors may be used. Threaded joints shall be made up tight with a suitable thread sealant or lubricant. Joints in piping systems handling class I liquids shall be welded when located in concealed spaces within buildings.
(b) Pipe joints dependent upon the friction characteristics or resiliency of combustible materials for mechanical continuity or liquid-tightness of piping shall not be used inside buildings. They may be used outside of buildings above or below ground. If used aboveground outside of buildings, the piping shall either be secured to prevent disengagement at the fitting, or the piping system shall be so designed that any spill resulting from disengagement could not unduly expose persons, important buildings or structures, and could be readily controlled by remote valves.
Source The provisions of this § 13.54 amended June 22, 1984, effective June 18, 1984, 14 Pa.B. 2131; transferred from 37 Pa. Code and renumbered as 34 Pa. Code § 14a.54, February 28, 2014, effective March 1, 2014, 44 Pa.B. 1233. Immediately preceding text appears at serial pages (259936) to (259937).
Cross References This section cited in 34 Pa. Code § 14a.8 (relating to vents); 34 Pa. Code § 14a.51 (relating to scope and application); 34 Pa. Code § 14a.52 (relating to general design specifications); and 34 Pa. Code § 14a.161 (relating to general provisions).
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