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Serving construction for 25 years
Tailor Made Catchpit Chambers for Silt Control
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
WASP Catchpit Chambers
A catchpit chamber, also known simply as a catchpit, is a structure used in drainage systems to capture and retain debris, sediment, and other solids from surface water runoff. They are normally installed upstream of an attenuation tank or attenuation pond to prevent blockages, reduce sediment build-up and improve the overall efficiency and longevity of the drainage system.
WASP catchpits are designed to separate and retain silt and other particles from stormwater, helping to protect the downstream drainage system and local environment. WASP catchpits are bespoke, watertight, structured wall chambers, manufactured to suit project-specific requirements and arrive to site ready to install.
Installation is quicker than traditional manhole chamber build techniques using manhole rings and the health and safety benefits become apparent during handling and installation, due to their strong, lightweight construction and integral lifting points.
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
Comply with
Sewers for Adoption (SfA8) 8th edition.
Suitable for Adoptable and Non-Adoptable applications.
Building Regulations - Part H1.
New Design & Construction Guidance – Section C7.1.1 Sediment Management.
Generally in accordance with BS EN 13598-2 but our chambers have a 300mm sump rather than a flow channel.
Prefabricated
Chambers are manufactured from adoptable standard pipework.
Easy access for collection and disposal of silt
Watertight, structured wall construction
One-piece installation
Strong and lightweight
Multiple inlet and outlet options
Ø1200+ Fitted step rungs to BS EN 13101
Easy to Install
Integral lifting points as standard
Depths to suit project-specific requirements
Supplied with integral spigot connections
Made from High-density Polyethylene (HDPE)
Wide range of diameters available
No concrete surround required
Product Information
WASP05050 Series 500mm Ø Chambers
The WASP05050 series catchpit chambers are a 500mm diameter (ID) Catchpit Chamber prefabricated to suit individual site requirements to a maximum height of 2500mm (including sump). Pipe connection spigots ranging from 110mmØ to 250mmØ (OD) are positioned to suit the manhole schedule. These chambers are supplied complete with a reduced access cover.
WASP05100 Series 600mm Ø Chambers
The WASP05100 series catchpit chambers are a 600mm diameter (ID) Catchpit Chamber prefabricated to suit individual site requirements to a maximum height of 2500mm (including sump). Pipe connection spigots ranging from 110mmØ to 315mmØ (OD) are positioned to suit the manhole schedule. These chambers are supplied complete with a reduced access cover.
WASP05250 Series 1200mm Ø Chambers
The WASP05250 series catchpit chambers are a 1200mm diameter (ID) Catchpit Chamber prefabricated to suit individual site requirements to a maximum height of 2500mm (including sump). Pipe connection spigots ranging from 110mmØ to 450mmØ (OD) and 500mmØ (ID) are positioned to suit the manhole schedule. These chambers are supplied with step irons as standard.
WASP05300 Series 1350mm Ø Chambers
The WASP05300 series catchpit chambers are a 1350mm diameter (ID) Catchpit Chamber prefabricated to suit individual site requirements to a maximum height of 2500mm (including sump). Pipe connection spigots ranging from 110mmØ to 450mmØ (OD) and 500mmØ to 600mmØ (ID) are positioned to suit manhole schedule. . These chambers are supplied with step irons as standard.
WASP05350 Series 1500mm Ø Chambers
The WASP05350 series catchpit chambers are a 1500mm diameter (ID) Catchpit Chamber prefabricated to suit individual site requirements to a maximum height of 2500mm (including sump). Pipe connection spigots ranging from 110mmØ to 450mmØ (OD) and 500mmØ to 600mmØ (ID) are positioned to suit manhole schedule. . These chambers are supplied with step irons as standard.
WASP05400 Series 1800mm Ø Chambers
The WASP05400 series catchpit chambers are a 1800mm diameter (ID) Catchpit Chamber prefabricated to suit individual site requirements to a maximum height of 2500mm (including sump). Pipe connection spigots ranging from 110mmØ to 450mmØ (OD) and 500mmØ to 900mmØ (ID) are positioned to suit manhole schedule. . These chambers are supplied with step irons as standard.
