1 inch Square Head Galvanized Cast Iron Plug

1" Galvanized Cast Iron Plug – Built for Demanding Sealing Applications

The 1" Galvanized Cast Iron Plug is designed for threaded systems that require a secure, corrosion-resistant seal. Manufactured from cast iron and hot-dip galvanized for enhanced durability, this plug is commonly used to terminate or pressure-seal openings in galvanized piping networks, especially in vent, waste, and drainage systems.

Contractor-Grade Benefits

• ✅ Cast Iron Core – Delivers strength and structural stability under mechanical and hydraulic stress.
• ✅ Galvanized Coating – Provides uniform protection against corrosion and abrasion, even in harsh environments.
• ✅ Tapered Pipe Threads – Machined to ANSI/ASME B1.20.1 specifications for secure and leak-resistant engagement.
• ✅ Code-Compliant – Compatible with galvanized fittings and assemblies governed by IPC, UPC, and NFPA standards.
• ✅ Pressure Capable – Suitable for systems operating under moderate pressure in non-potable service applications.

Technical Specifications

• Material: Cast iron, hot-dip galvanized
• Size: 1 inch nominal pipe size
• Connection: Male NPT thread
• Standards: Conforms to ANSI/ASME B16.3 and B1.20.1

Typical Applications

This plug is typically installed in threaded galvanized steel pipe systems where a permanent or temporary seal is required. Common use cases include blanking off unused ports in cleanouts, vents, waste lines, compressed air systems, and fire protection piping (where permitted).

Installation Note

To ensure a reliable seal, always apply appropriate thread sealant or Teflon tape. Threads should be clean and properly engaged to avoid damage during tightening. Hand-tighten, then torque to spec using a wrench, avoiding over-tightening to preserve thread integrity.

Conclusion

Engineered for reliability, the 1" Galvanized Cast Iron Plug is a go-to solution for professionals requiring dependable sealing in threaded pipe systems. Its durability and corrosion resistance make it suitable for a wide range of construction and industrial applications. Select a fitting built to perform where it counts.