IPEX Encase systems use polypropylene piping, inside and out, for high corrosion resistance over a broad temperature range. At the heart the IPEX patented Encase polypro system is the Enfield electrofusion fitting with a heavy-gauge resistance wire molded into the socket. This microprocessor controlled fusion system lets you make highly consistent joints in minutes right in the trench. Available in both flame-retardant and non-flame-retardant PP, the Encase systems modular components are entirely pre-fabricated in the factory. The only joining required is the fusion of couplings to pipe and fittings. The result is a premier off-the-shelf system with substantially lower installation costs, compared to traditional technologies.