Sigma 811081819 Malleable Iron Galvanized Coupling 4 in

Product Description

The SIGMA 811081819 is a 4-inch nominal malleable iron galvanized coupling designed for joining pipe sections in industrial and commercial piping systems. Constructed from malleable iron with a galvanized finish, this coupling provides corrosion resistance in demanding environments. It is a standard threaded pipe fitting used by licensed plumbers and pipefitters in a wide range of mechanical and process piping applications where a reliable, durable connection is required.

This coupling is suited for use in commercial and industrial piping installations, including water distribution, gas distribution, and general mechanical systems where 4-inch nominal malleable iron fittings are specified. The galvanized coating makes it appropriate for wet or moderately corrosive service conditions. It follows standard pipe fitting configurations common to both new construction and retrofit work.

Key Features

• 4-inch nominal size for use with standard 4-inch pipe
• Malleable iron construction provides strength and impact resistance
• Galvanized finish offers corrosion protection in wet service environments
• Threaded coupling design for secure, leak-resistant pipe connections

Compatibility

Designed as an OEM-style replacement fitting for 4-inch nominal malleable iron threaded piping systems in commercial and industrial applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable IPC or IFGC codes. Shut off and depressurize the piping system completely before removing existing fittings or installing new ones. Apply appropriate thread sealant or PTFE tape to male threads before assembly. Do not over-torque threaded connections, as this may crack the fitting body.

Technical Specifications

• Nominal Size: 4 inches
• Material: Malleable Iron
• Finish: Galvanized

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 811081819