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

3/4" x 4-1/2" Galvanized Steel Nipple – Threaded Schedule 40 Connector for Piping Systems

The 3/4" x 4-1/2" galvanized steel nipple is a straight pipe fitting fabricated from Schedule 40 carbon steel and hot-dip galvanized to resist corrosion. It features male NPT threads on both ends and is used for rigid connections between female-threaded components in mechanical, utility, and non-potable water systems.

Technical Specifications

• Nominal Size: 3/4 inch
• Length: 4-1/2 inches overall
• Material: Carbon steel, hot-dip galvanized
• Wall Thickness: Schedule 40
• Thread Type: NPT (National Pipe Taper), ANSI/ASME B1.20.1
• Manufacturing Standards: ASTM A733 for nipples, pipe to ASTM A53 Grade A or B
• Coating Standard: Galvanized to ASTM A153

Installation Considerations

Apply PTFE thread sealant or compatible pipe joint compound on threads prior to assembly. Tighten using a pipe wrench sized appropriately for 3/4" fittings. Avoid overtightening to prevent thread deformation. Suitable for above-ground systems where corrosion protection is beneficial.

Common Applications

Typical use cases include:

• Non-potable water supply and return lines
• Compressed air and utility piping
• Fire protection systems where approved
• Mechanical room and equipment tie-ins

Material Consideration

Galvanized steel fittings are intended for environments where moderate corrosion resistance is required. Not recommended for direct burial or use in potable water systems unless approved by local code. For chemically aggressive conditions, stainless steel or coated alternatives should be considered.