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Stainless steel no-hub coupling with two clamps and rubber gasket, 3 inch size

Legend Valve

Legend Valve 303-420 3 inch heavy-duty no-hub coupling accessory

SKU CH-GMPC-WET9D

Heavy-duty no-hub coupling joins three-inch pipe without hubs for secure drainage connections

  • Heavy-duty coupling handles demanding 3-inch connections
  • No-hub design simplifies installation without specialised hub fittings
  • Legend Valve brand signals recognised plumbing quality
  • Model 303-420 identifies the exact specification for reordering
  • California Proposition 65 notice discloses regulated chemical content

3-Inch Heavy-Duty No-Hub Coupling

This coupling connects 3-inch no-hub pipe in drainage, waste and vent systems. It is designed for professional plumbers and maintenance crews who need a reliable mechanical joint. The heavy-duty construction suits commercial and residential installations alike. No electrical or electronic components are involved.

Installation and Common Issues

The coupling slides over the pipe ends and is secured by tightening the clamps with a standard driver or wrench. Proper alignment of the pipe ends before tightening prevents leaks. Over-tightening can damage the gasket or shield, so apply only enough torque to seal the joint. Always verify that the pipe material matches the coupling's intended use.

Pre-Order Checks

Confirm that your existing pipe is 3-inch no-hub type and that the material is compatible with the coupling gasket. Check local code requirements for mechanical couplings in the intended application. Ensure you have the correct driver or wrench for the clamp screws. The product carries California Proposition 65 warnings for cancer and reproductive harm.

Highlights

  • Heavy-duty coupling handles demanding 3-inch connections
  • No-hub design simplifies installation without specialised hub fittings
  • Legend Valve brand signals recognised plumbing quality
  • Model 303-420 identifies the exact specification for reordering
  • California Proposition 65 notice discloses regulated chemical content

Specifications

BrandLEGEND VALVE

Questions about this item

How do I verify the 3 inch heavy-duty no-hub coupling is sealing correctly after installation?

Run water through the connected pipes and inspect every joint for drips; a properly seated coupling shows no leakage at the gasket or clamp edges.

What components come with the Legend Valve 303-420 and what must I supply?

The coupling itself is included; you must provide compatible no-hub pipe sections and a torque wrench to tighten the clamps to the manufacturer's specification.

Which version of the 303-420 heavy-duty no-hub coupling should I select for a 3 inch pipe?

The 303-420 model is the 3 inch heavy-duty variant; choose it when your drainage system uses 3 inch no-hub cast iron or plastic pipe.

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