Standard 1 Inch Galvanized Iron GI Union, Threaded

1 Inch GI Threaded Union

The Standard 1 Inch Galvanized Iron GI Union serves as a critical mechanical junction designed to connect two lengths of threaded pipe while allowing for easy disconnection without cutting the line. This heavy-duty malleable iron fitting features a hot-dip galvanized finish to ensure long-term resistance against oxidation and mineral buildup in potable water or industrial fluid systems.

Built for the Job

This three-piece fitting consists of a nut, a female end, and a male end that together form a ground-joint seal. It is frequently deployed by plumbers and facility managers in locations requiring regular equipment maintenance, such as near water pumps, meters, or filtration units. The robust construction handles the mechanical stress associated with high-pressure water distribution and commercial irrigation setups. Unlike standard couplings, this component allows for the removal of a specific pipe section or valve without disturbing the rest of the rigid installation.

• Installation of main water supply lines in residential and commercial buildings.

• Connection points for industrial machinery requiring frequent fluid line servicing.

• Agricultural irrigation manifolds where seasonal disassembly is required.

Product Highlights

Corrosion Resistance

The hot-dip galvanization process provides a thick zinc coating that protects the underlying iron from moisture and chemical exposure.

Precision Engineering

• Deep-cut BSP threads ensure a secure, leak-proof engagement with standard 1-inch pipes.
• Machined ground joint surfaces provide a tight metal-to-metal seal under high torque.

Technical Specifications

What’s Included

• 1 x 1-Inch Galvanized Iron Three-Piece Union

On-Site & Workshop Notes

• Ensure threads are cleaned and free of debris before applying pipe sealant or PTFE tape to the male ends.

• This coupling requires sufficient clearance for a pipe wrench to rotate the large central nut during installation or removal.

• Do not over-tighten the central nut, as excessive force can stress the malleable iron housing or damage the internal seating surfaces.

• Suitable for use with water, oil, and gas systems where the pressure does not exceed the rated Class 150 limits.