Under Slab C.Iron to Plastic Couplers

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by tsawicki, Sep 13, 2004.

  1. tsawicki

    tsawicki New Member

    Sep 13, 2004
    Seattle, WA
    I need to connect a plastic pipe to my cast iron main drain line under the basement slab.

    I have read about mission couplers and looking at the Fernco website wonder if these are the couplers referred to here and elsewhere:


    Description from the website:

    AISI 304 Stainless Steel Shield

    AISI Stainless Steel Clamps and Screw Housing:
    Full size 9/16" wide bands and one piece screw housings are mechanically interlocked for strength. The wide clamp band provides enhanced sealing force.

    Specially Beaded Gasket:
    Unique beaded Neoprene gasket grips with superior holding and sealing power. Gasket conforms to ASTM C 564.

    HD-4000 Couplings:
    meet ASTM C 1277 and meet test criteria of CISPI 310.

    Thanks for any help,
  2. Dunbar Plumbing

    Dunbar Plumbing Master Plumber

    Apr 18, 2005
    Service Plumber, Outdoor Temperature Relief Owner
    Northern Kentucky/Greater Cincinnati Area
    Most areas just the rubber ferncos without the band is code but you can install shielded no hub mission couplings underground.
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