Underground Drainage Couplings & Connectors

Ensuring you have the correct type of drainage connectors is important. The drainage pipe couplings available at Drainfast range in sizes from 32 to 40mm up to 355–385mm diameters. This should provide plenty of options for joining pipes of the same or slightly different size.

These fittings provide secure, watertight connections for underground drainage systems and accommodate ground movement.

Underground drainage pipe couplings are perfect for the task of both repairing broken pipework and connecting newer pipes to older ones, even if their diameter varies. The adaptability and flexibility of these couplings make them perfect for connections of two different-sized pipes. This can save time replacing whole sections of older pipework during repairs or connecting a new system.

The primary difference between a flexible and traditional drainage pipe coupling lies in their materials and functionality. A traditional coupling is typically made from rigid materials like PVC or metal and is used to connect pipes of the same material and diameter in a fixed position.

Whereas, a flexible coupling is usually made of rubber or a similar flexible material with stainless steel clamps, allowing it to accommodate slight misalignments, vibrations and movement in the piping system.

Underground drainage connectors are made from durable materials specifically designed to handle harsh environmental conditions and ensure long-term performance. Commonly used materials include high-quality plastics like PVC, EPDM and polyethylene. All of which are valued for their resistance to corrosion, chemicals, and moisture.

Flexible drainage pipe couplings often feature rubber compounds that provide watertight seals while allowing for slight pipe movement, which are ideal for accommodating ground shifts or misalignments. Some connectors also include metal components, such as stainless steel or galvanised steel clamps or shears, to reinforce joints and improve the overall strength and reliability.

Choosing the right drainage connectors for your underground system requires careful consideration of pipe material, size and connection type. It's important to accurately measure both pipes and identify their materials, like clay, PVC, EPDM or other plastics, so that you can select a coupling that’s fully compatible with both.

At Drainfast, our experienced team is always on hand to help you choose the most suitable drainage pipe coupling for your specific project needs.

Underground drainage pipe couplings, like those available at Drainfast, are designed for reliable performance at varying installation depths, depending on site conditions and regulations.

Made from flexible rubber with robust stainless-steel clamps, these couplings are ideal for joining different types or sizes of drainage pipes while maintaining a secure, watertight seal. While flexible rubber couplings are generally suitable for typical residential and commercial drainage depths, often up to 3 to 4 meters, the actual maximum installation depth can vary based on soil conditions, loading and building codes.

For safe and compliant installation, it is essential to follow the manufacturer's specifications and consult recent regulations.