Skip To Content

MONObox™ Carson

The Carson Valve Box range has been used extensively for housing irrigation valve equipment and has a wide range of sizes to accommodate the requirements of the industry.

Enquire about this product

Features & Benefits

Flexible During Installation

Chambers can be adapted to suit on-site conditions with standard tools to overbuild over existing networks, Introduce duct entries for cable entry and for top-section fine adjustment.

All Weather Construction

Unlike with brick-built chambers where freezing temperatures can stop work, Carson can be installed in all types of weather.

Complete System Offering

‘Drop in’ HDPE covers (rated to 1.5T loading) - meaning no frame is required. Concrete Infill and Ductile Iron B125 access cover options are also available.

High Strength to Weight Ratio

The material is significantly lighter than other conventional materials that can provide the same inherent strength.

Fast & Easy to Install

MONObox™ chambers are significantly faster to install than conventional alternatives, with complete installations typically taking up to one hour. This results in reduced costs for the installer. No specialist equipment or plant is required in order to install the chamber and there is no need for specialist box builders.



MONObox™ Carson is manufactured in nitrogen-foamed High Density Polyethylene (HDPE), of which up to 70% is recycled material.

HDPE possesses excellent strength to weight properties.

Carson Materials 730x410

Available Sizes

Information on sizing

The MONObox™ Carson range encompasses rectangular and circular chambers available in a wide range of shapes and sizes. The rectangular boxes are available in 6 types with a range of clear opening options, with the circular chambers providing two options. A range of HDPE covers and security options are available across each range.

Carson Range

Load Rating

MONObox™ Carson is suitable for installation in environments rated to B125 under EN124.

Suitable for footways, pedestrian areas and comparable areas, car parks or parking decks.

Carson with lid 730x410

Product Resources

Options & Accessories

MONObox™ Carson can be supplied with the following accessories: