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Inspection Chambers

Streamline maintenance with our high-quality drainage inspection chambers. These crucial components provide convenient access points across your underground drainage pipes, allowing you to check and promptly address any issues. 

Drainage Central offers 450mm diameter Brett Martin inspection chamber assemblies, ideal for 110mm and 160mm drainage systems. These components also comply with Building Regulations Part H1. For more options, view more of our access chambers to find a solution that meets your precise requirements.

What is a Drainage Inspection Chamber?

Inspection chambers are integral to underground drainage systems, providing essential access points along the pipework for routine checks, tests, and clearing blockages. These chambers are for inspection cameras and equipment like drain rods, not physical access. Proper implementation is crucial for effective maintenance and preventing minor issues from escalating into severe damage.
 

Shop our Range of Inspection Chambers. 

At Drainage Central, you’ll find all the components needed for a Brett Martin inspection chamber assembly suitable for residential, agricultural, and industrial applications. The modular set-up includes a base, risers, seals, and round or square manhole covers to secure the opening. You can also add additional risers to achieve your desired height. 

The chamber is manufactured from high-quality polypropylene, ensuring it is robust and highly chemical resistant. Despite the chamber’s durability, it is still lightweight (25kg or less) and easy to install, requiring only light lubrication and a push-fit connection between the socket and chamfered plain ends. Browse all these fantastic components at competitive prices, or view other relevant items, such as soakaway crates and sewer pipes, to complete your drainage system. 

 
Inspection Chambers
450mm Inspection Chamber Base 110mm B5494
Brett Martin 450mm Diameter Inspection Chamber Base 5 x 110mm Inlets 190mm Invert
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Estimated Delivery 5 - 7 Working Days
Inc Vat: £66.53
(£55.44 Excl VAT )
450mm Inspection Chamber Base 160mm B5696
Brett Martin 450mm Diameter Inspection Chamber Base 5 x Inlets (3 x 160mm, 2 x 110mm) 190mm Invert
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Estimated Delivery 5 - 7 Working Days
Inc Vat: £90.00
(£75.00 Excl VAT )
450mm Inspection Chamber Riser B5397
Brett Martin 450mm Diameter Inspection Chamber Raising Piece 325mm Invert
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Estimated Delivery 5 - 7 Working Days
Inc Vat: £31.97
(£26.64 Excl VAT )
450mm Inspection Chamber Ring Seal B5398
Brett Martin 450mm Diameter Inspection Chamber Sealing Ring
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Estimated Delivery 5 - 7 Working Days
Inc Vat: £3.44
(£2.87 Excl VAT )
450mm Round Manhole Cover B6255
Brett Martin 450mm Diameter Secured Plastic Cover and Frame Suitable for Driveways 50kN
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Estimated Delivery 5 - 7 Working Days
Inc Vat: £45.11
(£37.59 Excl VAT )
450mm Square Manhole Cover B6260
Brett Martin 450mm Square Secured Plastic Cover and Frame Suitable for Driveways 50kN
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Estimated Delivery 5 - 7 Working Days
Inc Vat: £106.30
(£88.58 Excl VAT )
Manhole Cover Reducing Insert 450mm x 350mm B6350
Brett Martin 450mm x 350mm Manhole Cover Reducer for use when Chamber Invert exceeds 1.2m
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Estimated Delivery 5 - 7 Working Days
Inc Vat: £28.93
(£24.11 Excl VAT )
450mm Inspection Chamber 110mm Spare Plug B5000
Brett Martin 450mm Inspection Chamber Spare Plug (110mm)
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Estimated Delivery 5 - 7 Working Days
Inc Vat: £4.98
(£4.15 Excl VAT )
450mm Inspection Chamber 160mm Spare Plug B5100
Brett Martin 450mm Inspection Chamber Spare Plug (160mm)
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Estimated Delivery 5 - 7 Working Days
Inc Vat: £5.70
(£4.75 Excl VAT )