The Underground uPVC 110mm Double Socket Slip Coupler (also known as a repair coupler or expansion coupler) is a specialized straight-connection fitting designed for quick repairs and alterations in below-ground drainage and sewerage networks. Manufactured from tough, high-impact unplasticized polyvinyl chloride, this coupler is engineered to withstand heavy external soil loads, ground movement, and corrosive subterranean conditions.
 
Unlike standard couplers, a slip coupler features unobstructed internal walls with no centre stop, allowing the fitting to slide completely over a pipe spigot. This unique slip design enables installers to insert a replacement section of pipe into an existing, fixed pipeline without needing to flex or lift adjacent pipes. Each end is equipped with factory-fitted captive seal rings, ensuring an immediate, watertight, and root-resistant joint once repositioned.
 
Designed for fast and efficient installation in restrictive trench conditions, the slip coupler is an indispensable problem-solving component for repairing damaged pipe sections or inserting new branch connections into established runs. It delivers professional-grade convenience, durability, and leak-free performance underground.
 
Suitable for High Temperature Waste Discharges
160mm PVCu
Ring Seal Joints
Suitable for Gravity Drainage & Sewerage
Install to Depths of 10m