The Underground uPVC Mini Inspection Chamber Riser is an essential component designed to extend the depth of access and inspection chambers in below-ground gravity drainage and sewerage networks. Manufactured from tough, high-impact unplasticized polyvinyl chloride, this riser is engineered to withstand heavy external soil loads, ground movement, and the corrosive conditions of subterranean environments. It provides a reliable and structurally sound method for achieving the required invert levels for inspection chambers without compromising the integrity of the system.
 
Featuring a straightforward push-fit design, the riser integrates seamlessly with compatible inspection chamber bases and covers, allowing installers to easily adjust the height of the chamber to match finished ground levels. Its precision-molded dimensions ensure a secure, flush fit, while the rigid walls maintain stability during backfilling. This flexibility on-site saves time and labor, accommodating unexpected changes in trench depth or site grading without the need for complex modifications.
 
Designed to facilitate easy maintenance and jetting access, the riser maintains a smooth internal surface that prevents snagging and ensures uninterrupted flow through the chamber. Whether used in residential developments, commercial landscaping, or domestic drainage upgrades, this uPVC mini inspection chamber riser delivers professional-grade durability, making it a dependable choice for complete subsurface water management systems.
 
60 / 100 / 150mm Cut-Down Facility
110mm PVCu
Ring Seal Joints
Suitable for Gravity Drainage & Sewerage
Install to Depths of 10m