scope:

The purpose of this document is to provide background and supporting information related to the common installation practices for electrofusion fittings. This information is intended to be used in support of the development of generic joining procedures and practices. The procedures contained herein are in alignment with the manufacturers procedures that have been qualified by subjecting specimen joints made using this procedure to the tests described in C.F.R Title 49, Part 192, §192.283 (1)(iii) and (2).

This document is applicable for electrofusion joining to modern commercially available PE pipe grades of PE2406, PE2708, PE3408, and PE4710. Legacy materials such as PE2306, PE3406, PE3306, Dupont® Aldyl A, Uponor® Aldyl A, and Driscopipe® 7000 or 8000 pipe materials were not included in the development of this document.

PPI hopes that the inherent value of greater uniformity will provide all the incentive necessary for companies to evaluate this procedure as a first option for electrofusion joining of its PE piping products. Use of this procedure is obviously not mandatory, and every electrofusion fitting producer, pipe producer, and pipeline operator retains the option of developing different procedures for its particular products and pipelines. However, PPI believes that its work in developing this procedure as a candidate for widespread acceptance throughout the industry will lead to greater efficiency, simplicity, and understanding in this area and promote the use of effective, qualified procedures for electrofusion joining of PE gas pipe.