3/4 inch x 30 inch Galvanized Steel Nipple

3/4" x 30" Galvanized Steel Nipple – Schedule 40, Threaded Pipe Connector

The 3/4" x 30" Galvanized Steel Pipe Nipple is a Schedule 40 threaded fitting used to extend piping or connect components in water, air, and low-pressure gas systems. Fabricated from carbon steel pipe with hot-dip galvanized coating, this nipple provides corrosion resistance and mechanical strength in above-ground systems exposed to moisture or mild environmental conditions.

Technical Specifications

• Nominal Size: 3/4" NPT
• Length: 30 inches overall
• Material: Carbon steel, hot-dip galvanized
• Wall Thickness: Schedule 40 (per ASME B36.10M)
• Thread Type: NPT (National Pipe Thread Taper), ANSI/ASME B1.20.1
• Manufacturing Standard: Conforms to ASTM A53 and ASTM A733

Performance Characteristics

• ✅ Galvanized Coating – Zinc layer provides protection against external corrosion in damp or exposed locations
• ✅ Structural Integrity – Designed to support mechanical load and fluid flow within system pressure limits
• ✅ Threaded Ends – Facilitates direct connection to compatible valves, tees, or other fittings
• ✅ Consistent Tolerances – Manufactured for reliable fit-up and alignment across threaded assemblies

Installation Guidelines

Apply PTFE tape or pipe joint compound to male threads to ensure leak-tight sealing. Thread engagement should follow standard torque recommendations to avoid over-tightening. For horizontal installations, provide proper support as required by code. This fitting is not approved for use in potable water systems unless accompanied by specific lead-free certification.

Common Applications

Frequently used in commercial and residential systems, this galvanized nipple is suitable for boiler connections, pressure tanks, water heater loops, irrigation manifolds, and air compressor lines. It is intended for above-ground installation in non-potable, low- to moderate-pressure piping configurations.

Material Consideration

Galvanized steel pipe nipples are widely used where external corrosion protection is required. The hot-dip zinc coating forms a barrier that delays rust formation. For buried or high-corrosion environments, alternative materials such as PVC-coated or stainless steel may be more appropriate.

The 3/4" x 30" Galvanized Steel Nipple is a long-format connector designed for system extensions requiring corrosion resistance and consistent mechanical performance. Manufactured to recognized standards, it offers dependable service life across a wide range of plumbing and mechanical applications.