Abi Foundry 4059 Cast Iron Service Weight Plug 4 in Spigot

Product Description

The ABI FOUNDRY 4059 is a service weight cast iron plug with a spigot end configuration, designed for use in drain, waste, and vent (DWV) piping systems. This 4-inch plug is used to cap or seal pipe openings during pressure testing, system modifications, or permanent closures. Cast from domestic iron to service weight standards, it is built to handle the demands of professional plumbing installations. Licensed plumbers and pipefitters are the primary installers of this fitting in both new construction and retrofit applications.

This plug fits into 4-inch spigot connections in cast iron DWV systems and is rated for temperatures from 32 degrees F to 212 degrees F, making it suitable for a broad range of drain and waste line conditions. It is manufactured domestically, which supports compliance with Buy American requirements where applicable. Typical installations include sewer laterals, stack closures, and drain line terminations in residential and light commercial plumbing systems.

Key Features

• Service weight cast iron construction for durability in DWV applications
• 4-inch nominal size with spigot end for direct insertion into hub fittings
• 4-inch length provides sufficient engagement depth for a secure fit
• Temperature rated from 32 degrees F to 212 degrees F
• Domestically manufactured in the United States

Compatibility

Designed as an OEM-style replacement and standard fitting for 4-inch cast iron DWV piping systems using spigot-end connections.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Ensure the system is depressurized and drained before inserting or removing plugs. Spigot-end plugs are typically driven into hub fittings using a lead and oakum joint or a compatible mechanical coupling. Do not apply excessive force that could crack the cast iron body.

Technical Specifications

• Fitting Type: Plug
• Nominal Size: 4 inches
• End Style: Spigot
• Material: Cast Iron
• Length: 4 inches
• Temperature Rating: 32 to 212 degrees F
• Country of Origin: United States

Standard Information

• Brand: ABI FOUNDRY
• Manufacturer Part Number: 4059