Menu

Diffuser Unit 710 x 710 x 150mm (110mm Outlet) PVOD05101

PVOD Diffuser units are a recognised method for efficient diffusion of collected rainwater run-off into and out of the voided sub-base aggregate layers beneath permeable pavements. Diffuser Units are fully compliant with BS7533-13:2009 and arrive to site ready to install with no-site assembly required. They are simply joined to standard underground push-fit pipework. Pretreatment for silt / debris removal is required. This can either be a WASP silt catchpit or a Raintaina filter chamber.

£175.00 excl VAT £175.00

Product Code: CDSDU02

Diffuser Unit 710 x 710 x 150mm (110mm Outlet)

The Permavoid Diffuser Unit 710 x 710 x 150mm (110mm Outlet) unit is designed to distribute collected rainwater evenly into sub-base aggregate layers beneath permeable surfaces. This Permavoid Rainwater Diffuser Unit supports SuDS drainage systems by slowing water flow and promoting controlled infiltration within permeable pavement construction. Supplied pre-assembled and compatible with standard 110mm push-fit drainage connections, the unit helps simplify installation across residential, commercial, and public realm projects.

Specifications

Product type Rainwater diffuser unit
Product code CDSDU02
Dimensions 710 x 710 x 150mm
Outlet size 110mm
Connection type Push-fit
Installation Pre-assembled
Compliance BS7533-13:2009
Pre-treatment requirement Use with silt trap or filter chamber

Key design features

The Permavoid Diffuser Unit uses a wide 710 x 710mm footprint to distribute water evenly through the surrounding aggregate layer beneath permeable surfaces. The integrated 110mm outlet allows direct connection to standard underground drainage pipework, while the pre-assembled design helps reduce installation time on site.

Benefits

  • Supports controlled rainwater infiltration within SuDS systems.
  • Helps reduce erosion caused by concentrated water discharge.
  • Pre-assembled construction simplifies installation.
  • Compatible with standard 110mm underground drainage systems.
  • Designed for use within permeable pavement construction.

Applications

This Permavoid Rainwater Diffuser Unit is used within permeable paving systems where collected surface water needs to disperse evenly into the sub-base. Typical applications include permeable car parks, driveways, public realm projects, commercial developments, and infrastructure drainage schemes.

Explore more

Browse the full range of diffuser units and SuDS drainage products to find compatible attenuation and infiltration components for your project.

Contact us

For help selecting the correct diffuser unit or confirming compatibility with your drainage system, contact the team for technical advice and UK wide supply.