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Article | REF: C5461 V1

Joint sealing in public works - Applications

Author: Philippe COGNARD

Publication date: February 10, 2003

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8. Pipes and ducts

Large drinking water distribution mains can be made of reinforced cement, steel (which can be welded), cast iron, PVC or stoneware.

Numerous joint systems are available:

  • bead and socket joints, formerly sealed with semi-rigid lead;

  • flange gaskets ;

  • ring or sleeve seals with a compressed rubber gasket ;

  • flexible seals (e.g. Gibault type), sealed by a rubber ring;

  • joints sealed with flexible elastomeric sealants (polyurethane, polysulphide, etc.);

  • joints sealed with rigid epoxy sealants.

Of course, all products and materials in contact with drinking water must be safe for the consumer, and specific tests are available....

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