1/2 inch x 4-1/2 inch Brass Nipple

1/2 Inch x 4-1/2 Inch Brass Pipe Nipple – Male Threaded Extension for Water and Air Systems

The 1/2 inch x 4-1/2 inch Brass Nipple is a straight pipe fitting designed to extend piping runs or facilitate threaded connections between components in water, air, or oil systems. Fabricated from lead-free brass alloy, this nipple is machined with male National Pipe Thread (NPT) ends for compatibility with standard threaded plumbing and mechanical fittings.

Brass offers a corrosion-resistant alternative to steel or iron in potable water and compressed air applications. This fitting provides mechanical strength and consistent internal flow characteristics for high-integrity joint assemblies.

Field Applications and Benefits

• ✅ Dual Male NPT Threads – Machined to ANSI/ASME B1.20.1 standards, suitable for use with threaded valves, tees, couplings, and elbows.
• ✅ Lead-Free Brass – Manufactured in accordance with NSF/ANSI 61 and NSF 372 standards for potable water system compliance.
• ✅ Extended-Length Fitment – 4-1/2 inch length is ideal for bridging pipe gaps or adjusting component spacing in retrofit scenarios.
• ✅ Temperature and Pressure Resilience – Suitable for systems operating under moderate temperature and pressure conditions, including hot and cold water, compressed air, and non-corrosive fluids.

Installation Practices

Threaded brass nipples require appropriate sealant to ensure joint integrity. Use PTFE tape or approved pipe thread compound, applying torque with a pipe wrench at the hex flats if available, or with care not to damage threads. Avoid over-tightening, which can deform mating threads or cause stress fractures in connected components.

Typical Use Cases

This fitting is commonly installed in potable water supply lines, backflow preventer assemblies, air compressors, pump systems, water heaters, and general industrial piping configurations. Suitable for both new construction and service work requiring component replacement or system modification.

Technical Specifications

• Material: Lead-Free Brass (Compliant with Federal Reduction of Lead in Drinking Water Act)
• Size: 1/2 inch nominal diameter x 4-1/2 inch overall length
• End Type: MNPT x MNPT (Male Threaded Both Ends)
• Conformance: ASME B1.20.1; NSF/ANSI 61 and NSF 372 certified for potable water use

The 1/2 inch x 4-1/2 inch brass nipple is a dependable, code-compliant solution for extending pipe runs or making secure threaded transitions. It offers long service life in a range of mechanical and plumbing systems where reliability and material compatibility are critical.