Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 14a - STORAGE AND USE OF FLAMMABLE AND COMBUSTIBLE LIQUIDS
Subchapter A - GENERAL PROVISIONS
PIPING, VALVES AND FITTINGS
Section 14a.54 - Pipe joints
Current through Register Vol. 54, No. 38, September 21, 2024
(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.
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).
