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

1-1/2" x 4-1/2" Galvanized Steel Nipple – Threaded Fitting for General Piping Applications

The 1-1/2" x 4-1/2" galvanized steel nipple is a precision-machined threaded pipe segment used to extend or connect sections of pipe in water, air, oil, or steam systems. Constructed from carbon steel and hot-dip galvanized for corrosion resistance, it is ideal for low- to medium-pressure plumbing installations that require durability and consistent thread engagement.

Key Product Features

• Material: Carbon steel with hot-dip galvanized zinc coating for added corrosion resistance
• Nominal Size: 1-1/2 inch NPT (National Pipe Thread)
• Length: 4-1/2 inches overall
• Thread Type: NPT threaded male ends (tapered), fully threaded along the entire length
• Pressure Rating: Suitable for working pressures typical of residential and light commercial applications (non-hydraulic)

Applications

This nipple is commonly used to connect two female-threaded fittings or pipe ends in:

• Potable and non-potable water distribution systems
• Compressed air lines
• General-purpose plumbing systems
• Mechanical piping installations

Standards and Compliance

• Threading complies with ANSI/ASME B1.20.1 NPT pipe thread specifications
• Galvanized finish conforms to ASTM A123/A153 coating requirements
• Material conforms to ASTM A53 or A106 pipe specifications (varies by manufacturer)

Installation Considerations

For proper sealing, apply PTFE thread seal tape or thread compound to male threads before installation. Hand-tighten initially, followed by wrench-tightening using standard torque practices. Over-tightening may damage threads or the pipe system. Not intended for underground or chemical service unless otherwise specified by the manufacturer.

Usage Note

Galvanized steel is commonly used in environments where moderate corrosion resistance is required. However, it is not recommended for use with acidic or aggressive fluids due to potential degradation of the zinc layer over time.

The 1-1/2" x 4-1/2" galvanized steel nipple delivers robust, reliable performance in demanding conditions. Its standard thread form and galvanized finish ensure dependable service in a wide range of mechanical and plumbing applications.