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

1-1/4" Galvanized Steel Pipe Nipple – Built for Code-Compliant, Heavy-Duty Performance

The 1-1/4" x 5" Galvanized Steel Nipple is a threaded pipe fitting designed for high-strength applications in pressurized plumbing, mechanical, and HVAC systems. Manufactured from zinc-coated steel, it provides corrosion resistance and a secure connection in both horizontal and vertical piping layouts.

This nipple is machined with NPT threads on both ends for compatibility with standard galvanized malleable iron and steel fittings. It is typically used to extend pipe runs, facilitate transitions, or bridge connections across system components where rigidity and leak-free sealing are essential.

Advantages of Using Galvanized Steel Nipples

• ✅ Corrosion-Resistant Zinc Coating – Offers superior protection against moisture, making it ideal for exposed or humid conditions.
• ✅ Threaded Ends – NPT threads provide mechanical grip and seal integrity in fluid and gas systems.
• ✅ Structural Durability – Suitable for high-load and high-pressure environments such as water distribution and mechanical systems.
• ✅ Versatile Integration – Compatible with galvanized pipe and fittings across multiple trades including plumbing, fire protection, and HVAC.
• ✅ Compliant Manufacturing – Meets applicable ANSI/ASTM standards for threaded steel pipe components.

Specification Overview

• Material: Galvanized carbon steel
• Nominal Size: 1-1/4 inch
• Length: 5 inches overall
• End Connections: NPT Male x NPT Male
• Finish: Hot-dip galvanized coating per ASTM A153

Installation Guidance

This nipple should be installed using appropriate threading compound or PTFE tape to ensure leak-tight connections. Avoid over-torquing to prevent damage to threads. For pressure-rated systems or those subject to vibration, it is recommended to follow torque specs and support guidelines outlined in applicable codes.

Common Applications

Used extensively in water distribution systems, mechanical piping assemblies, and industrial process lines. Also effective in pump systems, tank hook-ups, and retrofit tie-ins where schedule 40 steel is specified.

Technical Note

Galvanized steel is not recommended for potable water applications where corrosion from prolonged stagnation may lead to scaling. Use in non-potable, HVAC, and industrial piping systems is preferred unless otherwise directed by local code.