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Flexible PVC Rubber Couplings

Form a leak-resistant seal between pipes with the flexible coupling. Close off the end of pipeline in a non-pressurized system with a flexible end cap. Flexible adapters help stop leaks around pipe entering concrete manhole walls.

Where to Buy
The NDS 4 in. flex coupling connects concrete pipe to cast iron/sewer & drain or DWV pipes and are to be used in non-pressurized utility and plumbing applications (NDS 06-44)
Where to Buy
The NDS 4 in. flex coupling installation step shows how to tighten the band to form a positive seal against infiltration and exfiltration in non-pressure environments. (NDS 56-44)

Key Features

  • Flexible couplings flex with normal earth movement and is unaffected by soil conditions; resistant to chemicals, UV rays and normal sewer gases
  • Flexible caps have reinforced convex faces to withstand greater testing pressure; minimizes ballooning; has a 5 PSI maximum
  • Flexible adapters allow some lateral pipe movement around pipe entering concrete manhole walls; maintains integrity of seal
  • NDS offerings also include drain and trap connectors
  • Flexible caps, couplings, and adapters are made of flexible elastomeric polyvinyl chloride (PVC)

Applications

  • Flexible couplings connect clay, concrete, or asbestos cement fibre/ductile iron pipe to cast iron/plastic/copper/steel/lead pipe; coupling flexibility provides leak-resistant seals with virtually any pipe
  • Flexible caps stop the flow of water at the end of the pipeline; closes off pipe; remove cap to flush pipe system
  • Flexible adapters works with most plastic pipe to transport water through manhole wall and provide a leak-resistant connection

Installation & Maintenance

  • Coupling and cap have clamped end(s) that slide onto pipe;
  • Tighten clamp(s) with screwdriver, 5/16 in. nut driver or socket to 60 inch-lbs. torque
  • Adapter screws onto pipe
  • Performance issues can indicate damage; replace as needed

Materials & Sustainability

  • Flexible caps, couplings, and adapters are made of flexible elastomeric polyvinyl chloride
  • Clamps are made of series 300 stainless steel
  • Onsite flow management helps provide a leak-resistant and corrosion-free system

Product Models

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34 products

    Part Number
    (click for more info)    		 Description
    33S248 CLAMP Clamp, 3.625 in. - 16 in., 51-1/2 in. Length, Stainless Steel
    4MA Flexible Elastomeric PVC Adapter for Concrete Manhole, 4 in., Black
    6MA Flexible Elastomeric PVC Adapter for Concrete Manhole, 6 in., Black
    8MA Flexible Elastomeric PVC Adapter for Concrete Manhole, 8 in., Black
    02-44 Flexible Elastomeric PVC Coupling for 4 in. Clay Pipe X 4 in. Cast Iron/Plastic Pipe, Black
    06-44 Flexible Elastomeric PVC Coupling for 4 in. Concrete Pipe X 4 in. Cast Iron/Plastic Pipe, Black
    02-64 Flexible Elastomeric PVC Coupling for 6 in. Clay Pipe X 4 in. Cast Iron/Plastic Pipe, Black
    02-66 Flexible Elastomeric PVC Coupling for 6 in. Clay Pipe X 6 in. Cast Iron/Plastic Pipe, Black
    06-64 Flexible Elastomeric PVC Coupling for 6 in. Concrete Pipe X 4 in. Cast Iron/Plastic Pipe, Black
    06-66 Flexible Elastomeric PVC Coupling for 6 in. Concrete Pipe X 6 in. Cast Iron/Plastic Pipe, Black
    02-88 Flexible Elastomeric PVC Coupling for 8 in. Clay Pipe X 8 in. Cast Iron/Plastic Pipe, Black
    06-88 Flexible Elastomeric PVC Coupling for 8 in. Concrete Pipe X 8 in. Cast Iron/Plastic Pipe, Black
    56-1010 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 10 in. X 10 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-150 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 1-1/2 in. X 1-1/2 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-125 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 1-1/4 in. X 1-1/4 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-1212 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 12 in. X 12 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-2150 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 2 in. X 1-1/2 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-22 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 2 in. X 2 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-32 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 3 in. X 2 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-33 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 3 in. X 3 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    51-44 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 4 in. Asbestos Cement Fibre/Ductile Iron Pipe X 4 in. Cast Iron/Plastic Pipe
    56-42 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 4 in. X 2 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-43 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 4 in. X 3 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-44 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 4 in. X 4 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    51-66 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 6 in. Asbestos Cement Fibre/Ductile Iron Pipe X 6 in. Cast Iron/Plastic Pipe
    56-64 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 6 in. X 4 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-66 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 6 in. X 6 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-86 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 8 in. X 6 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-88 Flexible Elastomeric PVC Coupling with Stainless Steel Clamp for 8 in. X 8 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-150/125 Flexible Elastomeric PVC Coupling with Stainless Steel Clamps for 1-1/2 in. X 1-1/4 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-E43 Flexible Elastomeric PVC Eccentric Coupling with Stainless Steel Clamps for 4 in. X 3 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    56-E64 Flexible Elastomeric PVC Eccentric Coupling with Stainless Steel Clamps for 6 in. X 4 in. Cast Iron/Plastic/Copper/Steel/Lead Pipe
    XJ3 Flexible Elastomeric PVC Expansion Joint, 3 in., Black
    57-125/125 PVC Drain and Trap Connector with Stainless Steel Clamps, 1-1/4 in. or 1-1/2 in. Drain Piping X 1-1/4 in. or 1-1/2 in. Drain Piping

    Specifications & Documents