Asc Engineered Solutions 318901048 Cast Iron Cap 4 Inches

Product Description

The ASC ENGINEERED SOLUTIONS 318901048 is a 4-inch black cast iron cap designed to terminate or seal the end of a cast iron pipe in drain, waste, and vent (DWV) plumbing systems. This domestically manufactured fitting features a black coating finish and weighs 7.05 pounds, reflecting the substantial construction typical of cast iron pipe fittings. Licensed plumbers install this type of cap when capping off an unused branch, decommissioning a line, or staging rough-in work for future connections. The cast iron construction provides long-term durability in below-grade and above-grade DWV applications.

This fitting is suited for residential and commercial plumbing installations where cast iron DWV pipe is specified. Common applications include main stack terminations, branch line closures, and rough-in scenarios where a line must be sealed pending future fixture installation. Its 4-inch size fits standard 4-inch cast iron pipe, making it appropriate for main drain lines and soil stacks commonly found in both new construction and retrofit plumbing work.

Key Features

• 4-inch fitting size compatible with standard cast iron DWV pipe
• Black coating finish for corrosion resistance and traditional DWV system appearance
• Domestically manufactured construction
• Substantial 7.05-pound cast iron build for long-term durability
• Designed to fully seal and terminate cast iron pipe ends

Compatibility

Designed as an OEM-style replacement and standard-fit cap for 4-inch cast iron DWV pipe systems in residential and commercial plumbing applications.

Installation Notes

Installation of cast iron caps is performed by licensed plumbers in accordance with local plumbing codes and the International Plumbing Code (IPC). Always isolate and drain the affected line before fitting installation. Cast iron fittings are typically joined using no-hub couplings with a torque wrench or by lead-and-oakum methods on older systems, depending on the existing pipe configuration. Verify local code requirements before selecting a joining method.

Technical Specifications

• Fitting Size: 4 inches
• Coating: Black
• Item Weight: 7.05 pounds
• Country of Origin: Domestic

Standard Information

• Brand: ASC ENGINEERED SOLUTIONS
• Manufacturer Part Number: 318901048