Underground Drainage Adaptors

Drainfast offers a comprehensive range of flexible underground adaptor drainage couplings that are designed to facilitate seamless connections between various pipe sizes and materials. These adaptors are particularly useful for transitioning between clay and plastic pipes, accommodating a variety of diameters from four-inch clay/plastic to 335-360mm drainage pipe adaptors.

Whatever size you need for your drainage pipe adaptor needs, Drainfast is sure to have what you need.

An underground drainage pipe adaptor is used to connect two pipes of differing sizes together in drainage, sewage or other underground pipe systems. They create a secure, air and watertight seal to ensure the smooth, seamless running of the system. Whether repairing broken pipes or making brand-new connections, Drainfast’s adaptor drainage couplings are a crucial and reliable tool for ground workers.

An underground drainage pipe adaptor is typically made from durable materials designed to withstand harsh underground conditions. Commonly, they are crafted from high-quality rubber or flexible polymers, which provide excellent sealing and flexibility. These materials allow the adaptors to accommodate slight movements and misalignments in pipes without leaking.

Additionally, some adaptors incorporate stainless steel or galvanised metal clamps to secure connections firmly. The combination of flexible rubber and sturdy metal ensures underground adaptors are both reliable and long-lasting in various drainage and plumbing systems.

Choosing the right adaptor for your underground drainage pipe involves considering pipe material, size and connection type. Measure both pipes accurately, identify their materials (e.g., clay, plastic), and select an adaptor compatible with both. Ensure the adaptor provides a secure, watertight fit and flexibility to accommodate movement, preventing leaks and maintaining drainage efficiency.

Our expert team at Drainfast are happy to help you decide which drainage pipe adaptor will work best for you.

The installation of an underground adaptor normally depends on the type of pipework and the requirements and limitations of the product. The most common guideline suggests that the minimum depth should be around 600mm. This is to ensure it is deep enough to prevent freezing and any damage from the surface. There are some underground adaptors that can be rated for around four metres underground.

When in doubt, ask an expert from Drainfast.

Yes, a drainage pipe adaptor will be needed to connect existing pipework. Whether repairing existing pipework or introducing a new connection, the most common way of completing this task is:

• Expose the pipework
• Cut the existing pipe down neatly
• Place the adaptor over the ends of the pipes that need connecting
• Tighten the clamps
• Test it
• Cover up the dug trench