THE IRON-CLAD TRUTH:
DWV Installation Project Stages
Installation & Inspection

CISPI is the resource for inspectors, code officials and plumbing contractors when it comes to questions on cast iron soil pipe and fittings installation, proper use, specifications and codes. CISPI territory managers are available to assist you with answering any questions regarding the manufacture and use of cast iron soil pipe and fittings.
Resources
View AllCISPI 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.