Spears 436-010 PVC Pipe Fitting, Adapter, Schedule 40, White, 1" Socket x NPT Male (Pack of 10) Adapter for connecting pipes or fittings of different types Socket on one end and NPT male threads on the other for connecting two pipes with different ends PVC for chemical and corrosion resistance, strength, and light weight Maximum operating temperature of 140 degrees F Meets ASTM D1784 and D2466 standards for quality assurance