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    Shel12ley's Avatar
    Shel12ley Posts: 1, Reputation: 1
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    #1

    Sep 1, 2014, 06:16 PM
    How to add a cleanout to a cast iron vent pipe
    Our plumber wants to install a cleanout for the washing machine drain vent pipe.
    How do I do this?
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
    current pert
    		  
    #2

    Sep 1, 2014, 06:28 PM
    If it's a vertical run of cast iron, you have the problem of tremendous weight coming down from above. Talk to your plumber.


    Horizontal you can generally just sawzall out a section and add 2 short pieces of PVC with the cleanout and the washer drain in the middle, and attach it to the iron with 2 steel-clamp rubber connectors (Fernco is the typical brand) Then you want metal strap hangers to hold up the iron on either side.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #3

    Sep 1, 2014, 08:00 PM
    If the plumber wants to do it let him. You need to support the heavy piping, cut it and add a cleanout section. Cast Iron is not easy to cut without the proper tools.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #4

    Sep 2, 2014, 04:22 AM
    Your plumbers biggest problem will be supporting the cast iron stack after he makes a cut. This can be accomplished with a raiser clamp and two 2X4s cut to size, (see image) I make my cuts with a set of ratchet cutters. Good luck Tom
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