1-1/4 inch x 1 inch Galvanized Iron Reducing Coupling Female x Female

1-1/4 inch x 1 inch Galvanized Iron Reducing Coupling – Threaded Fitting for Size Transitions

The 1-1/4 inch x 1 inch Galvanized Iron Reducing Coupling is a cast malleable iron fitting engineered for threaded pipe systems requiring a reduction in pipe diameter. Its design supports reliable, pressure-rated connections in non-potable plumbing systems including water distribution, air lines, and low-pressure steam piping.

Constructed from ASTM A197 malleable iron and hot-dip galvanized to ASTM A153 standards, the coupling resists corrosion and mechanical wear in demanding indoor and outdoor environments. Female National Pipe Thread (NPT) ends provide a secure, tapered-thread interface for leak-resistant assembly in Schedule 40 or 80 galvanized steel piping networks.

Key Performance Features

• ✅ Corrosion Protection Zinc galvanization extends service life in damp or corrosive environments such as basements, mechanical rooms, and utility spaces.
• ✅ Threaded Female x Female Design Compatible with NPT threads as defined by ANSI/ASME B1.20.1, allowing seamless integration into existing pipe runs.
• ✅ Dimensional Accuracy Machined to tight tolerances for consistent thread engagement and joint stability under moderate pressure conditions.
• ✅ Pressure Application Range Suitable for use in air, water, and oil systems up to rated working pressures as defined by ASME B16.3.
• ✅ Material Specification Cast from malleable iron for structural resilience under vibration and moderate thermal cycling.

Common Applications

This reducing coupling is typically installed in branch take-offs, system retrofits, or equipment transitions where pipe size reduction is required without compromising thread integrity. Its use is prevalent in mechanical rooms, compressed air manifolds, backflow preventer assemblies, and water service entry points.

Compliance Note

Galvanized iron fittings are generally approved for non-potable water and industrial fluid systems. For potable water applications, refer to local codes regarding use of galvanized components and corrosion inhibitors in domestic water lines.

Installation Guidelines

Apply thread sealant or PTFE tape to male threads before connection. Hand-tighten initially, then wrench-tighten to manufacturer torque recommendations to avoid over-threading or cracking. Always pressure-test the system after installation per local mechanical or plumbing codes.

The 1-1/4 inch x 1 inch Galvanized Iron Reducing Coupling offers a durable, code-compliant solution for threaded pipe transitions in both commercial and industrial systems. It is designed for long-term performance in infrastructure where dimensional adaptability and corrosion resistance are required.