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

1/4” x 1-1/2” Galvanized Steel Nipple – Threaded Pipe Fitting for Corrosion-Resistant Applications

The 1/4 inch x 1-1/2 inch Galvanized Steel Nipple is a Schedule 40 pipe fitting designed for joining two female-threaded components. Made from carbon steel pipe conforming to ASTM A53 or A733 and hot-dip galvanized to ASTM A123 specifications, this nipple is suitable for non-potable water systems, low-pressure air, and mechanical installations where corrosion resistance is required.

Both ends feature National Pipe Taper (NPT) male threads, precision-machined per ANSI B1.20.1 for secure mechanical engagement. The overall length and threading specifications make this fitting appropriate for short-run connections and confined layout installations where alignment and integrity are critical.

Technical Features

• ✅ Nominal Size: 1/4 inch
• ✅ Length: 1-1/2 inches
• ✅ Material: Welded or seamless carbon steel, zinc-coated via hot-dip galvanizing
• ✅ Thread Standard: NPT per ANSI B1.20.1 on both ends
• ✅ Wall Thickness: Schedule 40 dimensions

Applicable Standards

• ASTM A53 / A733 – Specification for steel pipe and nipples
• ASTM A123 – Zinc (hot-dip galvanized) coatings on iron and steel products
• ANSI B1.20.1 – Taper pipe thread specification

Installation Considerations

Use approved thread sealant or PTFE tape to ensure a watertight or airtight seal. Do not over-torque during installation, especially when connecting to fittings of dissimilar materials. Galvanized nipples should not be used in systems where the water is intended for human consumption unless certified lead-free per NSF 372.

Typical Applications

This fitting is used in mechanical and plumbing systems including fire protection piping, low-pressure HVAC branch circuits, air distribution, and general-purpose utility piping. Suitable for both new construction and retrofit use where compact pipe joints are required.

Material Usage Note

Galvanized steel is corrosion-resistant for indoor and dry location applications. For outdoor or aggressive environments, confirm compatibility with system media and consider dielectric unions when connecting to copper or stainless components to prevent galvanic corrosion.