Browse a selection of polyvinylidene pipe from Grainger. Nipple fitting connections are available for MNPT and FNPT connections. PVDF polymer connectors withstand exposure to harsh thermal, chemical or ultraviolet material. These nipple fittings are constructed from Kynar material and have a temperature range of between 73 to 280 degrees. They are available in a range of sizes from 3" to 6" and from short to closed.