THE IRON-CLAD TRUTH:
Standard & Specifications for DWV Systems
Product Specifications
The cast iron soil pipe, fittings, gaskets and couplings manufactured by CISPI members meet all requirements outlined by CISPI and ASTM standards, including the requirements of Annex A1 and so listed by NSF and the International Plumbing Code (IPC). Our members’ products are also listed with the International Association of Plumbing and Mechanical Officials (IAPMO), which has chosen not to list products to the full compliance of Annex A1.The products are suitable for above and below grade usage.
Our members’ DWV products are certified and listed by NSF to CISPI 301, ASTM A74 and CISPI 310.
When properly installed, cast iron soil pipe, fittings, gaskets and couplings sold by member companies comply with the appropriate standards listed below:
Resources
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CISPI Brochure
All too often, the perceived cost advantages of plastic over cast iron are not what they seem. This brochure will help it all make sense, by comparing six areas that can add cost and complexity: fire resistive construction, crush and deflection underground, thermal expansion/
CISPI Cast Iron Soil Pipe & Fittings Handbook
This newly updated handbook features the latest technical specs, installation guides, manufacturing details, layouts and other useful information for putting cast iron soil pipe and fittings to work for you.
CISPI 301
Standard specification for hubless cast iron soil pipe and fittings for sanitary and storm drain, waste and vent piping applications.