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The ASC ENGINEERED SOLUTIONS 318901204 is a 6-inch black cast iron cap designed to terminate or close off cast iron pipe ends in drain, waste, and vent (DWV) piping systems. Cast iron caps like this one provide a durable, pressure-resistant seal at pipe terminations and are a standard fitting in commercial and residential plumbing rough-in work. Weighing 15.88 pounds, this fitting is built for the load-bearing demands of cast iron systems. It is installed by licensed plumbers working on soil stacks, cleanout assemblies, and similar piping configurations.
This cap is suited for use in both new construction and retrofit applications where a 6-inch cast iron pipe end requires capping. Its black coating provides corrosion resistance appropriate to below-grade and in-wall installations common in commercial buildings, multi-family residential projects, and institutional facilities. The domestic origin designation supports buy-American project specifications where required.
Designed as an OEM-style replacement or new-installation fitting for 6-inch cast iron DWV piping systems in residential and commercial plumbing applications.
Installation should be performed by a licensed plumber in accordance with the applicable International Plumbing Code (IPC) or local plumbing authority requirements. Shut off and drain the affected piping section before fitting the cap. Cast iron fittings of this size typically require appropriate lead-and-oakum, no-hub band coupling, or mechanical joint methods depending on the existing system configuration. Handle with care given the significant weight of the fitting.
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