1/2" x 2-1/2" Nipple Black

The 1/2" x 2-1/2" Black Pipe Nipple is a precision-engineered extension for industrial lubrication systems and hydraulic sensing lines. Manufactured from high-tensile Schedule 40 carbon steel, this 2-1/2 inch fitting provides the structural rigidity necessary for mounting pressure transducers and flow meters in high-vibration machinery environments.

The black oxide natural scale finish ensures chemical compatibility with a wide range of petroleum-based fluids and industrial oils. Featuring precision-cut male NPT threads, this nipple achieves a robust metal-to-metal seal through a 1:16 taper interference fit. This mid-reach length is specifically designed to clear heavy machine casings while maintaining a high burst-pressure safety margin, making it a reliable component for hydraulic manifold assemblies where space and durability are equally prioritized.

Is the 2-1/2" length standard for hydraulic sensing ports?
Yes. The 2-1/2 inch length is frequently specified for hydraulic sensing ports because it provides enough clearance for the sensor body and wiring harness to clear the main pump or reservoir wall without creating excessive leverage that could lead to vibration-induced fatigue.

Can I use this nipple for high-viscosity oil transfer?
Absolutely. The smooth internal pipe bore and robust Schedule 40 wall thickness make it ideal for high-viscosity lubricants. Unlike thinner tubing, this carbon steel nipple maintains its internal diameter under vacuum or pressure, ensuring consistent flow rates for industrial lubrication manifolds.

Does the black oxide finish require extra sealant for oil lines?
While the finish provides a high-friction grip for wrenches, a high-quality industrial pipe dope or anaerobic thread sealant is always recommended for petroleum-based fluid systems to ensure a 100% leak-proof boundary at the threaded interface.