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MENU Main Menu Why Cast Iron CISPI You Standards Specifications Technical Resources About Us Why Cast Iron CISPI You Standards Specifications Technical Resources About Us Earn CEUs with CISPI Training CISPI Brochure PDF Handbook PDF CISPI You Engineers CISPI is dedicated to serving plumbing engineers by providing information on industry and product specifications as well as model codes. Our regional representatives are also available to answer any questions or provide guidance as you work to design reliable and efficient plumbing systems. Authority Having Jurisdiction CISPI strives to be a resource for the AHJ community providing information as requested to inspectors and code officials. Installers CISPI serves plumbing contractors as a resource for cast iron product questions on installation proper use specifications and codes.