Heat Fusing Polypropylene Pipe Detailed in New Standard

The Plastics Pipe Institute has published ASTM F3722 Standard Practice for Heat Fusion Joining of Polypropylene Pipe and Fittings by ASTM International. The new standard was developed by PPI Building & Construction Division members and the ASTM F17 technical committee during several years and is based on industry best practices and consensus of contributing members. It is available from ASTM at https://www.astm.org/f3722-24.html.

With high temperature and pressure capabilities, polypropylene random copolymer and polypropylene random copolymer with modified crystallinity and temperature resistance pipes are suitable for demanding pressure piping applications, such as plumbing, hydronics and chilled water in commercial high-rise buildings or data centers.

ASTM F3722-24 describes procedures for making joints with pressure-rated polypropylene pipes, fittings and valves by butt fusion, socket fusion, sidewall outlet fusion, or electrofusion methods, with a separate section dedicated to each type of fusion. The fusion practices are applicable for both factory and field environments.