Smith - Blair 4.21085E+13 Steel Bolted Coupling 8 Inches

Product Description

The SMITH - BLAIR 4.21085E+13 is an 8-inch top bolt steel bolted coupling designed for joining or repairing pipe sections in water, wastewater, and industrial piping systems. This coupling uses a bolted top-bolt design that allows for secure, leak-resistant connections without requiring full pipe rotation during installation. Constructed from steel, it is built to withstand the mechanical demands of pressurized pipe systems. Licensed plumbers and pipefitters typically install this fitting in municipal, commercial, and industrial applications where a reliable mechanical joint is required.

This coupling is suited for 8-inch pipe installations in water distribution, wastewater conveyance, and general industrial piping. Its bolted design makes it a practical choice for repair clamps and transition coupling scenarios where fast, field-serviceable connections are needed. It is commonly used by utility contractors and mechanical trade professionals working on buried or exposed piping infrastructure.

Key Features

• 8-inch nominal size for standard large-diameter pipe connections
• Top bolt configuration allows installation without rotating the pipe
• Steel construction provides durability in pressurized piping systems
• Bolted coupling design ensures a secure, leak-resistant mechanical joint
• Order increment of 1 for flexible quantity purchasing

Compatibility

Designed as an OEM-style mechanical replacement coupling for 8-inch nominal diameter pipe in water, wastewater, and industrial piping systems.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter following applicable local plumbing and mechanical codes. Depressurize and isolate the pipe section before beginning work. Ensure pipe ends are clean, free of debris, and properly aligned before tightening bolts to achieve an even, leak-free seal. Follow the manufacturer torque sequence recommendations included with the product.

Technical Specifications

• Nominal Pipe Size: 8 inches
• Material: Steel
• Coupling Style: Top Bolt Bolted Coupling
• Order Increment: 1

Standard Information

• Brand: SMITH - BLAIR
• Manufacturer Part Number: 4.21085E+13