1/2 inch x 3-1/2 inch Brass Nipple

1/2" x 3-1/2" Brass Nipple – Lead-Free Threaded Fitting for Potable and Mechanical Systems

The 1/2" x 3-1/2" Brass Nipple is a precision-machined, lead-free brass fitting designed for use in piping systems that require corrosion resistance, code compliance, and secure threaded connections. Commonly installed in potable water, low-pressure gas, and mechanical system applications, this fitting facilitates straight-line connections between two female-threaded components.

Constructed from brass that meets NSF/ANSI 61 and NSF/ANSI 372 requirements, this nipple is suitable for use in both residential and commercial applications where lead-free compliance and long-term material stability are essential. The male NPT (National Pipe Thread) ends ensure compatibility with a wide range of plumbing and mechanical assemblies.

Product Specifications

• ✅ Nominal Size: 1/2 inch
• ✅ Length: 3-1/2 inches
• ✅ Material: Lead-free brass (ASTM B584 or equivalent)
• ✅ Connection Type: Male NPT x Male NPT, tapered thread per ANSI/ASME B1.20.1
• ✅ Certifications: NSF/ANSI 61 and 372 for potable water applications

Performance Characteristics

• ✅ Corrosion Resistance: Suitable for use in systems exposed to water, air, or non-aggressive fluids
• ✅ Thread Integrity: Tapered NPT threading ensures proper sealing when installed with approved thread compound or PTFE tape
• ✅ Service Versatility: Rated for use in water distribution, compressed air lines, boiler connections, and recirculation piping
• ✅ Mechanical Durability: Withstands temperature and pressure fluctuations in indoor and protected outdoor applications

Installation Recommendations

Prior to installation, inspect threads for cleanliness and damage. Apply thread sealant or PTFE tape as required for pressure integrity. Hand-tighten followed by wrench tightening to torque specifications suitable for brass to brass or brass to other metal transitions. Always verify local code compliance when installing in potable or fuel gas systems.

Field Applications

This 1/2" x 3-1/2" brass nipple is commonly used in water heater connections, plumbing manifold configurations, appliance stub-outs, and system retrofits where a compact, corrosion-resistant connection is required. It offers reliable service in both new construction and system maintenance environments.

Compliance Note

Lead-free brass components are required in potable water systems across all jurisdictions in the U.S. under the Safe Drinking Water Act. This fitting complies with those standards and is suitable for direct contact with domestic water lines.

The 1/2" x 3-1/2" Brass Nipple provides a durable, code-compliant connection solution for plumbing professionals working across residential, light commercial, and mechanical systems where consistent material performance is critical.