Rigid Grooved Couplings
Flexible Couplings
Grooved Reducing Coupling
Grooved Tee (Short Radius)
Long Grooved Tee
Grooved Concentric Reducer (Imported)
Grooved 90° Elbow - Short Radius
Long Grooved 90° Elbow
Grooved 45°Elbow
Grooved End-Caps
Grooved Flange Adapter
Grooved Threaded Mechanical Tee
Grooved MT-30 Threaded Mechanical Tee
Grooved Mechanical Tee
Grooved 22-1-2 Degree Bend
Grooved 90 Drain Bend w-1 Outlet
Grooved Drain Cap W
Grooved x Threaded 90° Elbow
Grooved x Grooved Nipples
Grooved x Threaded Nipples
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  1. 1-1/2" RIGID GROOVED COUPLING
    1-1/2" RIGID GROOVED COUPLING
    $3.73
    SKU: GF 112C4
    999 In stock
    $3.73
     / each
  2. 2" RIGID GROOVED COUPLING
    2" RIGID GROOVED COUPLING
    $4.23
    SKU: GF 2C4
    999 In stock
    $4.23
     / each
  3. 3" RIGID GROOVED COUPLING
    3" RIGID GROOVED COUPLING
    $6.26
    SKU: GF 3C4
    999 In stock
    $6.26
     / each
  4. 4" RIGID GROOVED COUPLING
    4" RIGID GROOVED COUPLING
    $7.91
    SKU: GF 4C4
    999 In stock
    $7.91
     / each
  5. 6" RIGID GROOVED COUPLING
    6" RIGID GROOVED COUPLING
    $15.78
    SKU: GF 6C4
    999 In stock
    $15.78
     / each
  6. 2-1/2" RIGID GROOVED COUPLING
    2-1/2" RIGID GROOVED COUPLING
    $5.06
    SKU: GF 212C4
    999 In stock
    $5.06
     / each
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Rigid Grooved Couplings

Grooved couplings are the "glue" of a grooved pipe system. The flexibility that's at the core of what makes grooved piping so widespread for the use of fire sprinkler systems and other applications comes from the Ductile Iron housing clamped over synthetic high-density rubber - an unbeatable combination of security and flexibility.

Rigid Grooved Couplings are slightly stiffer than standard or flexible grooved couplings, ideal for systems that are unlikely to encounter external forces on the joining areas.

Add to the fact that these couplings are significantly less labor-intensive and require no expensive specialty tools to install and it's easy to see why so many wet and dry systems these days utilize a grooved piping system.

Installation tips for Grooved Pipe Couplings

  1. The first step is to check the connecting pipes are clean of any dust, dirt, grease, chips of paint or anything else you wouldn't want in your system. 
  2. Next, you're ready to attach the coupling over one of the pipes you want to connect, remembering to add a little lubricant to the gasket if there isn't any present already.
  3. When the gasket is attached, bring together both ends of the pipe, slide the gasket to the point where they meet and you'll find that it slots right in place.
  4. Next, open up the red coupling like a clamshell by removing just one of the bolts and place the housing over the gasket. Ensure the housing keys are properly embedded in the grooves of the pipe, insert the bolt and turn the nuts until both are tight, alternating between the two to ensure even pressure