3/4 inch x 5-1/2 inch Galvanized Steel Nipple

3/4" x 5-1/2" Galvanized Steel Nipple – Threaded Fitting for High-Durability Piping Systems

The 3/4" x 5-1/2" Galvanized Steel Nipple is manufactured for use in a wide range of pressure-rated piping systems, offering a robust solution for connecting components in water, air, gas, and oil service lines. Constructed from welded steel pipe and hot-dip galvanized for added corrosion resistance, this nipple provides mechanical strength and long-term reliability in demanding conditions.

With precision-cut NPT threads on both ends, the fitting ensures a tight, secure seal when installed with proper thread sealant. It complies with ASTM A733 and ASTM A53 standards for steel pipe nipples and is suitable for use in environments requiring protection against moisture, oxidation, and mechanical wear.

Technical Highlights

• ✅ Material: Welded steel, hot-dip galvanized coating (zinc outer layer)
• ✅ Nominal Size: 3/4 inch
• ✅ Length: 5-1/2 inches end-to-end
• ✅ Thread Type: Male NPT (National Pipe Thread), both ends
• ✅ Pressure Rating: Rated for use in low- to medium-pressure systems (dependent on pipe schedule)
• ✅ Standards: Meets ASTM A53/A733 and ANSI B1.20.1 specifications

Installation Recommendations

Use a calibrated thread sealant or PTFE tape on both ends prior to assembly. Apply proper torque per thread engagement guidelines to prevent galling or deformation. Always verify system pressure ratings and compatibility with surrounding materials. For gas systems, adherence to local code is required, including pressure testing after installation.

Typical Applications

• Potable and non-potable water distribution lines
• Compressed air systems
• Low-pressure steam or condensate return lines
• Fuel oil piping (where permitted)
• Natural gas or propane service lines (if permitted by local code)

Did You Know?

Galvanized steel nipples are preferred in exposed piping installations due to their resistance to surface rust. However, they are not suitable for aggressive corrosive environments, such as chemical process systems or high-salinity exposure, where alternative alloys like stainless steel may be required.

The 3/4" x 5-1/2" Galvanized Steel Nipple is an essential threaded component for professionals seeking code-compliant, corrosion-resistant solutions in structural or mechanical piping layouts. Its durability and compatibility make it a go-to fitting in both retrofit and new construction work.