1/4 inch x 1/8 inch Galvanized Cast Iron Bushing

1/4 inch x 1/8 inch Galvanized Cast Iron Bushing – Threaded Reducing Fitting

The 1/4 inch x 1/8 inch Galvanized Cast Iron Bushing is designed for pipe size transitions within threaded steel piping systems. Used to reduce the opening size of a female-threaded fitting, this component provides a secure mechanical joint between different nominal diameters in gas, water, or air distribution applications.

Manufactured from galvanized cast iron, this bushing features a male NPT thread on the larger end and a female NPT thread on the reduced end. The zinc coating offers additional protection against oxidation in dry or mildly corrosive environments, making it suitable for above-ground use in mechanical, commercial, and industrial systems.

Functional Attributes

• ✅ Thread Type: NPT (National Pipe Tapered) – conforms to ANSI/ASME B1.20.1 for compatibility with standard pipe threads
• ✅ Material Composition: Cast iron per ASTM A197 with hot-dipped galvanized finish
• ✅ Connection: 1/4 inch Male NPT x 1/8 inch Female NPT
• ✅ Applications: Suitable for air, water, steam, and low-pressure gas systems
• ✅ Use Case: Typically used to reduce connection size in valves, tees, elbows, and threaded outlets

Installation Guidelines

Apply thread sealant or PTFE tape to male threads prior to installation. Use a pipe wrench to tighten securely without over-torquing. Ensure thread engagement is full to maintain system pressure rating and avoid leaks. Not suitable for use in potable water systems unless approved by local jurisdiction.

Where It's Used

This bushing is commonly used in mechanical rooms, gas distribution manifolds, compressed air systems, and industrial piping networks where compact reducing transitions are required. It supports use in both residential and commercial-grade installations.

Material Insight

Galvanized cast iron provides enhanced corrosion resistance in non-submerged environments while maintaining the structural durability required for threaded connections in steel piping systems.

Technical Specifications

• Material: Galvanized Cast Iron (ASTM A197)
• Size: 1/4 inch Male x 1/8 inch Female
• Thread Standard: ANSI/ASME B1.20.1 NPT
• Compliance: Meets dimensional and performance standards for iron pipe fittings

The 1/4 inch x 1/8 inch Galvanized Cast Iron Bushing delivers a compact, pressure-rated solution for transitioning between nominal pipe sizes in threaded system configurations. Engineered for reliable performance across a range of mechanical and utility piping applications.