Spears 475 Series PVC Pipe Fitting, Wye, Schedule 40, 6" x 4" Socket Wye fitting with three openings for connecting and branching three pipes Socket openings on each end for connecting three male pipes PVC for chemical and corrosion resistance, high strength, and less weight than fittings made from metal Maximum operating temperature of 140 degrees F Meets ASTM D1784 and D2466 standards for quality assurance, and certified by NSF International for potable water service