Marley launches a brand new range of inspection chambers


In response to customer demand, Marley Plumbing & Drainage has launched a new range of adoptable inspection chambers for both type three and type four installations, which are compliant with Sewers for Adoption and Building Regulations.

The new BSI approved range of inspection chambers, which are suitable for adoptable and non-adoptable applications, have been developed to be compatible with Marley’s 150mm Quantum sewer structured wall drainage and its 110mm and 160mm solid wall drainage, in order to provide specifiers, contractors and housebuilders with a ‘one stop shop’.

Suitable for type three installations and for depths up to 2m, there is a 450mm inspection chamber, which is available with an inspection riser (with sealing rings) and a cast iron lid and frame. What’s more, there is also a 350mm reduced access ring, which should be used to reduce the 450mm chamber to 350mm for those installations deeper than 1m. This is to prevent small children or animals from falling into the chamber – improving the health and safety of a development as a result.

For type four installations and depths up to 2m, there is a 315mm inspection chamber base, chamber risers with sealing rings and a 300mm cast iron lid and frame.

What’s more, to help aid identification of Marley’s inspection chambers once installed underground and to assist developers, contractors and building regulation inspectors in ensuring that they are SfA7 complaint, all chambers are manufactured with conspicuous blue caps.

Tim Sandberg, Category Manager at Marley commented: “With water and sewerage companies responsible for public sewerage networks, contractors and housebuilders will now have to use adoptable inspection chambers to comply with Sewers for Adoption. With this in mind, we decided to develop a series of inspection chambers that would be compatible with our pipes and fittings, in order to offer our customers a full suite of products, which will reduce the need to approach numerous suppliers.

“We’re also pleased to say that all of our inspection chamber products have passed aseries of comprehensive assessments and have been kitemarked by the BSI – providing peace of mind to all who use these products.”

For more information about Marley’s new inspection chambers, or to download CAD drawings, please visit

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