SURFACE-WATER PRE-TREATMENT
PLASTIC SILT TRAP
A robust, lightweight chamber designed to capture settled sediment before it reaches downstream drainage and attenuation systems.
600 / 350 ACCESS
Twinwall riser with concentric reducing cap
STRAIGHT FLOW
DN225 inlet and outlet at 180 degrees
300 mm SUMP
Captures settled material below invert
HDPE BODY
Lightweight, durable and corrosion resistant
CHAMBER
600 mm ID
CONNECTIONS
2 x DN225
SEDIMENT SUMP
300 mm deep
TOP ACCESS
350 mm clear
BODY
UV-stabilised HDPE
A robust plastic silt trap designed to intercept and retain settled debris before it enters downstream pipework, treatment stages or attenuation systems. Its straight-through DN225 connections support efficient flow, while the 300 mm internal sump provides a dedicated sediment collection zone for straightforward inspection and maintenance.
Effective sediment capture
Helps protect downstream drainage assets from avoidable silt
build-up.
Accessible maintenance
A 350 mm clear opening supports routine inspection and cleaning.
Straight-through connection
DN225 inlet and outlet connections align at 180 degrees for uncomplicated integration.
Durable lightweight construction
The UV-stabilised HDPE body is corrosion resistant and easier to
handle on site.
| Clear chamber / access diameter | 600 mm |
| Riser construction | 600 mm twinwall HDPE, cut to required height |
| Reducing cap | Concentric 600-to-350 mm |
| Inlet and outlet | DN225 |
| Pipe arrangement | 180 degrees, common centreline / invert |
| Minimum internal sump depth | 300 mm below pipe invert |
| Body material | UV-stabilised black HDPE / PE |
| Access cover | 350 mm clear; load class selected for location |
INSTALLATION PRINCIPLES
Coordinate the chamber with the approved drainage design and confirm final cover level, pipe invert and access requirements before installation.
- Fit the reducing cap concentrically and seal all joints
watertight. - Provide at least 150 mm of compacted granular bedding and surround.
- Keep cover and frame loads structurally independent from the plastic riser.
- Assess groundwater conditions and include anti-flotation
measures where required. - Leak-test connections before completing final backfill.
Company No. 11750319 | VAT Reg. 313255143