1-1/2 inch Galvanized Iron Cap

1-1/2” Galvanized Iron Cap – Threaded End Closure for Pressure and Drainage Systems

Engineered to terminate or seal the end of a pipeline, the 1-1/2” Galvanized Iron Cap provides a durable and corrosion-resistant solution for threaded pipe systems. Constructed from malleable galvanized iron, it is suitable for use in non-potable water, compressed air, and drainage systems where protection from oxidation and mechanical stress is required.

This cap features internal National Pipe Thread (NPT) threads and is produced in accordance with dimensional tolerances set by applicable ASTM and ASME standards. Its robust construction and galvanic protection make it a practical choice for long-term system performance.

Key Benefits in the Field

• ✅ Corrosion Resistance Hot-dip galvanized coating offers protection in moist or exposed conditions, reducing deterioration over time.
• ✅ Pressure-Grade Threading Tapered threads conform to ANSI B1.20.1, enabling secure sealing with pipe joint compounds or tape.
• ✅ Mechanical Strength Suitable for capping off pressurized or static segments of pipe in commercial and industrial applications.

Technical Specifications

• Nominal Size: 1-1/2”
• Material: Galvanized malleable iron
• Thread Type: Female NPT
• Compliance: Manufactured to meet ANSI and ASTM dimensional and material requirements

Installation Considerations

Installation requires proper thread engagement using approved sealants or PTFE tape to ensure a pressure-tight connection. Caps should be installed using the correct torque to prevent over-threading or distortion. In systems subject to inspection, ensure all materials and methods comply with relevant codes and standards.

Typical Applications

This fitting is often used in mechanical piping layouts, utility piping terminations, and maintenance isolation points. It is frequently deployed in gas lines, HVAC piping, and fluid transport systems to protect unused outlets or close off system ends during maintenance or expansion phases.

Material Performance Note

Galvanized iron components offer strong resistance to atmospheric corrosion, making them appropriate for environments where exposure to moisture, air, or non-corrosive liquids is expected. These fittings are generally not used for potable water due to potential leaching and coating degradation over time.

Additional Attributes

• ✅ Reliable Thread Engagement Provides consistent fit with standard Schedule 40 and Schedule 80 steel pipe threads.
• ✅ Structural Integrity Maintains seal under temperature and pressure fluctuations common in utility systems.
• ✅ Application Versatility Suited for use in industrial plumbing, fabrication, and system isolation tasks.

The 1-1/2” Galvanized Iron Cap is a practical, code-compliant solution for contractors seeking a secure and corrosion-resistant method to seal threaded pipelines. Its construction and compatibility make it an essential part of any system requiring reliable closure points.