Innovative Products
Using our experience to design products to satisfy your needs, to make your job easier
Serving construction for 25 years
Diffuser Units for Effective Usage of Subbase Storage
Made in the UK
High quality sustainable water management products designed and manufactured in the UK
Technical Support
We are committed to provide full technical support in line with current legislation & guidance
PVOD Rainwater Diffuser Units
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.
Please contact SEL if you would like further information regarding any of the products below
Tel: 01254 589987 Email: sales@selenvironmental.com
surface water management
Key Benefits
Efficient Diffusion
Recognised method for efficient diffusion of rainwater into and out of the voided sub-base aggregate
Standard unit sizes for simple design integration
The Original
Strong and lightweight
fully compliant with BS7533-13:2009
Special project-specific sizes available upon request
Easy to Install
One-piece installation
Supplied with integral socket connection
Suit stardard uPVC pipe sizes
Product Information
PVOD05101 Diffuser Unit 710x710x150
The Permavoid Diffuser Unit 710x710x150; 110mm ø Socket is used for the efficient diffusion of collected surface water runoff in or out of permeable aggregates. This technique can be utilised in junction with both pervious and impervious surfaces, in
particular where there are high groundwater levels, contamination or shallow rock layers. Each diffuser module is complete with a preformed 110mm Ø push fit socket for easy connection to standard PVC-u underground pipework. All diffusers are encapsulated by a 2mm mesh which avoids debris clogging and provides an excellent open surface area for surface water runoff to easily flow into the surrounding aggregate.
Each diffuser unit is suitable for 100m² catchments or 3 l/s discharge
PVOD05202 Diffuser Unit 2130x355x300
The Permavoid Diffuser Unit 2130x355x300; 160mm ø Socket is used for the efficient diffusion of collected surface water runoff in or out of permeable aggregates. This technique can be utilised in junction with both pervious and impervious surfaces in particular where there are high groundwater levels, contamination or shallow rock layers. Each diffuser module is complete with a preformed 160mm Ø push fit socket for easy connection to standard PVC-u underground pipework. All diffusers are encapsulated by a 2mm mesh which avoids debris clogging and provides an excellent open surface area for surface water runoff to easily flow into the surrounding aggregate.
Each diffuser unit is suitable for 250m² catchments or 6.3 l/s discharge
