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    Ohio_Remodeler's Avatar
    Ohio_Remodeler Posts: 85, Reputation: 1
    Junior Member
    		  
    #1

    Apr 26, 2007, 08:36 AM
    Reducing PVC from 4" to 3"
    This run goes from 4" cast iron to 3" PVC and back to 4" cast iron. Is it necessary to replace the 3" PVC with 4" PVC?

    If it is, please refer me to the code in the Plumber's code book that requires this.

    What type of hubs are code to use to replace this?

    What code book do plumbers use? I'm in Ohio.
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    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Apr 26, 2007, 10:38 AM
    As a rule it's not a good practice to choke down drainage but, what da hell. I'm a great believer in, "If it ain't broke don't fix it." There may be some experts that disagree with me but if it's been working leave it be. Good luck, Tom
    Ohio_Remodeler's Avatar
    Ohio_Remodeler Posts: 85, Reputation: 1
    Junior Member
    		  
    #3

    Apr 26, 2007, 12:47 PM
    Thanks for the quick response. I agree with you, but the plumbing inspector is saying it needs to be updated. What type of connectors to go from 4" cast iron to 4" PVC? Where in the 2006 International Plumbing Code does it say those connectors are allowed?
    iamgrowler's Avatar
    iamgrowler Posts: 1,421, Reputation: 110
    Ultra Member
    		  
    #4

    Apr 27, 2007, 06:41 AM
    Quote Originally Posted by Ohio_Remodeler
    Thanks for the quick response. I agree with you, but the plumbing inspector is saying it needs to be updated. What type of connectors to go from 4" cast iron to 4" PVC? Where in the 2006 International Plumbing Code does it say those connectors are allowed?

    Again, I'm speaking to the prevailing code in my area, which is the Uniform Plumbing Code.

    The accepted transition from Cast to Plastic is a Fernco or Mission CP-44 shielded coupling.

    The rubber fitting at the bottom of the photo would be prohibited for use inside a building in my area, unshielded clamped fittings are strictly used for below ground transitions.
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