The Encase polypropylene system features electrofusion fitting with a groundbreaking heavy-gauge resistance wire molded into the socket. The result is a premier system that offers high-quality joints and considerable reduction of installation time. It uses the same material inside and out, which eliminates differential expansion problems and ensures that chemical resistance is the same for the entire system. The Encase acid waste polypropylene 45 wye (socket x spigot x socket) offers a fast and reliable joining method for use in this system. Made of polypropylene material, it features excellent chemical resistance and the ability to handle a wide temperature range. It is available in 1-1/2x4", 2x4", 3x6", 4x8", 6x10" and 8x12" sizes.