2 inch Galvanized Iron Cap

2" Galvanized Iron Pipe Cap – Threaded Fitting for Sealing Schedule 40 Steel Systems

The 2" Galvanized Iron Cap is a threaded pipe fitting used to terminate or seal the end of a run in galvanized steel piping systems. Designed for use with Schedule 40 threaded pipe, this fitting provides a secure, pressure-rated closure for non-potable water, air, and mechanical systems requiring a corrosion-resistant solution.

Manufactured from galvanized malleable iron, the cap features internal NPT threads for compatibility with standard steel or iron pipe. The zinc coating enhances corrosion resistance, making it suitable for outdoor, exposed, and wet-location service.

Performance and Application Advantages

• ✅ Malleable Iron Body – Cast to ASTM A197 with threaded ends machined per ANSI B1.20.1 for uniform fit and durability.
• ✅ Hot-Dip Galvanized Finish – Zinc coating applied to resist oxidation and extend service life in corrosive or damp environments.
• ✅ Secure Thread Engagement – Precision threading ensures leak-resistant sealing when used with PTFE tape or pipe compound.
• ✅ Pressure-Capable Design – Rated for low- to moderate-pressure systems (150 PSI non-shock water, air, or oil).
• ✅ Meets Code Requirements – Manufactured in accordance with ASME B16.3 standards for malleable iron threaded fittings.

Technical Specifications

• Material: Galvanized Malleable Iron
• Nominal Size: 2 inches
• Connection Type: Female NPT (National Pipe Thread)
• Standard: ASME B16.3 / ANSI B1.20.1
• Pressure Rating: 150 PSI (non-shock, at ambient temperature)

Typical Applications

This cap is commonly used in mechanical piping systems, air lines, sprinkler riser assemblies, and process piping layouts. It is suitable for closing off unused outlets during system pressure testing or for long-term capping of lines in maintenance and retrofit operations.

Material and Usage Note

Galvanized malleable fittings are not approved for use with potable water systems in many jurisdictions due to concerns about zinc leaching. Always consult local code for appropriate use in drinking water lines. Best suited for non-potable, industrial, or outdoor utility service.

The 2" Galvanized Iron Cap delivers dependable sealing for pipe terminations where durability, corrosion resistance, and code-compliant threading are required. Ideal for both new installations and mechanical system modifications in demanding environments.