1-1/2 inch Square Head Galvanized Cast Iron Plug

1-1/2 inch Galvanized Cast Iron Plug – Engineered for Secure Sealing

The 1-1/2 inch Galvanized Cast Iron Plug is a robust fitting designed to cap off unused openings in threaded piping systems. Manufactured from durable cast iron with a protective galvanized finish, this plug is ideal for maintaining system integrity under pressure in both new installations and maintenance work.

Performance Features

• ✅ Threaded Square Head Design – Allows for easy installation and removal using standard pipe wrenches.
• ✅ Corrosion Resistance – Galvanized coating provides an added layer of protection in wet or corrosive environments.
• ✅ Pressure Rated – Suitable for low- to medium-pressure applications in drainage, waste, and vent systems or non-potable water lines.
• ✅ Consistent Seal – Machined threads ensure a tight, leak-resistant connection when used with thread sealant or PTFE tape.

Technical Specifications

• Nominal Size: 1-1/2 inch
• Material: Cast Iron
• Finish: Galvanized Zinc Coating
• Connection: Female National Pipe Thread (FIPT)
• Application: Sealing pipe ends in non-pressurized and pressurized systems

Installation Guidance

Installation is straightforward using a wrench on the square head. Apply a thread sealant or PTFE tape to ensure a watertight fit. Always inspect threads for debris and damage prior to installation. For pressurized systems, ensure compliance with local plumbing codes and pressure ratings.

Application Uses

This galvanized plug is commonly used in commercial and residential systems to close off pipe runs or future access points. Appropriate for mechanical rooms, utility lines, irrigation systems, and HVAC system drain lines.

Contractor Note

Galvanized cast iron fittings like this plug are valued for their dimensional accuracy and mechanical strength, especially where system reliability and corrosion resistance are non-negotiable.