Nipple, Application Air, Gas, Non-Potable Water, Oil, Steam, Finish/Coating Black Anodized, Fitting Compatibility Schedule 40, Inside Diameter 2 15/32 in, Manufacture Location Made in USA*, Material Steel, Material Grade Grade A, Maximum Operating Pressure 300 psi @ 150 Degrees F, Maximum Steam Pressure 150 psi @ 360 Degrees F, Metal Pipe Construction Welded, Nominal Pipe Size 2 1/2 in, Outside Diameter 2 7/8 in, Overall Length 3 in, Pipe Weld Type Continuous Weld, Schedule Schedule 40 This Beck nipple has a weld bead on the inside and is NPT threaded at both ends. Model is interchangeable with black cast iron or steel. For low-pressure plumbing applications including air, water, oil, natural gas, and steam. Certified for use in potable water applications.