Case Study Details

Client Name

Terrill Bros. Ltd


Extraction of cast steel dust from fettling and grinding booths and cut off saw.

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Terrill Bros. Ltd is a well-established company with foundry operations specializing in high alloy steel in South West England. They manufacture cast valves for a variety of applications including the oil and water industrial sectors.

Their previous dust extraction system, serving their grinding and fettling booths, was comprised of 3 old dust collectors each fitted with 20 filter cartridges and individual fans.

There were issues with the old system including high noise levels and frequent cartridge changes. Considerable power costs were also a factor, as the three individual fans were using excessive amounts of energy.


Camfil APC was contacted by Terrill Bros. to provide a solution to address their concerns. After careful analysis, a solution was developed for the customer’s requirements. The solution was to replace the old dust collectors with a state-of-the-art Gold Series® industrial dust collector complete with a new fan and control system.

A Gold Series GS12 dust collector located at Terrill Bros. Ltd in Hayle, Cornwall, UK.

The new system includes a GS12 Gold Series cartridge dust collector and floor mounted CF16.5 fan incorporating a 15 kW motor. In addition, the fan is fitted with a discharge silencer to reduce noise levels.

The system is controlled by a new variable speed control package, ensuring that the fan runs at the correct speed to maintain the optimum performance. This variable speed drive coupled with the low pressure drop of the HemiPleat cartridge filters has provided Terrill Bros. with immediate savings on their energy costs.

Terrill Bros. installed the system themselves in June 2012 utilizing the detailed Camfil APC installation guide provided with every order. They are delighted with the performance and operation of their new system.

Phil Harvey, the maintenance manager at the Hayle foundry, highlighted that they chose Camfil APC due to its impressive customer service as well as the massively reduced running costs and low noise levels. Phil concluded by mentioning that the system's strength is that “it’s built like a tank."

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