3/8 inch x 1-1/2 inch Galvanized Steel Nipple

3/8" x 1-1/2" Galvanized Steel Nipple – Schedule 40, Threaded

The 3/8" x 1-1/2" galvanized steel nipple is designed for joining sections of threaded steel pipe in low to medium pressure systems. Manufactured to conform with ANSI and ASTM standards, this fitting supports general plumbing, mechanical, and hydronic installations requiring corrosion-resistant galvanized pipe connections.

Hot-dip galvanized per ASTM A153, the coating enhances resistance to rust and atmospheric corrosion. The nipple is constructed from welded steel pipe and is precision-threaded to meet ASME B1.20.1 taper pipe thread specifications, ensuring compatibility with NPT components across standard pipe assemblies.

Product Features

• ✅ Material: Carbon steel with hot-dip galvanized finish (ASTM A733 compliant)
• ✅ Size: Nominal 3/8" diameter x 1-1/2" overall length
• ✅ Threads: NPT – tapered, male-threaded ends per ASME B1.20.1
• ✅ Wall Thickness: Schedule 40
• ✅ Pressure Rating: Suitable for non-potable water, air, oil, or low-pressure steam systems within the allowable working pressure of the piping material
• ✅ Corrosion Protection: External galvanized coating provides extended service life in interior and exposed environments

Typical Applications

This galvanized steel nipple is commonly used in:

• Water distribution piping (non-potable only)
• HVAC condensate and hydronic systems
• Compressed air service
• Low-pressure process piping
• Threaded manifold connections and mechanical assemblies

Installation Notes

Threaded pipe nipples require proper sealing using PTFE thread tape or pipe joint compound. Do not overtighten during installation to avoid thread damage. Use pipe wrenches on the hex-free body section and verify all fittings meet local plumbing and mechanical codes prior to use.

Material Insight

Galvanized steel pipe remains a standard in mechanical construction where moderate corrosion resistance and mechanical durability are needed. It is not intended for potable water service due to the potential for zinc leaching and buildup within the system.