Unlike any other solution Hanson had explored, Expel worked!

Industries using refrigerant dryers can still encounter moisture issues because they cool air to a 3⁰C dew point. While water vapour condenses at 3⁰C, any colder pipes or equipment can cause further condensation and damage equipment. Expel acts as the perfect failsafe for Hanson sites. Typically, water vapour in pneumatic lines has time to cool down and condense upon reaching the point of use.

Original AVG has designed Expel filters using Computational Fluid Dynamics to analyse the most efficient and effective filtration method. Expel employs physics to separate impurities from compressed air. A gravitational pull then discharges the contaminants into an AVG Auto Drain. Consequently, Expel guarantees the removal of 99.999% of liquid water, oil emulsion fluids, and solid particulates down to 1 micron. Expel filters are the ultimate failsafe for Hanson sites because, unlike conventional filters, they never reduce performance or require maintenance.

Since installing Expel, Hanson found that solenoid valves stopped failing, resulting in an annual saving of £775 per site. They also found that Expel was the only compressed air preparation method required, meaning they could disconnect their dryers. In turn, this eradicated the costs associated with dryers, which, according to Hanson, can save sites around £857 per year.

Given these remarkable results, Hanson launched a national project to improve the compressed air quality at their concrete plants. To date, Hanson has installed Expel filters on 109 concrete plants and has estimated an annual cost saving of £177,888.

“I would recommend it to any industry and operation that uses compressed air systems and anyone that suffers from moisture in the lines. We’ve not had a single issue since it was installed.”  – Emily Stevenson, District Operations Manager, Hanson.

The Results:

• Reduced Costs: By disconnecting their dryers and having Expel guarantee the protection of solenoid valves, each site saves approximately £1,632 per year. Therefore, the total cost savings across all 109 sites are estimated at £177,888 annually.
• Reduced Maintenance: Hanson’s concrete plants no longer had to call in maintenance teams to maintain dryers. The on-site maintenance staff also no longer spend time replacing moisture-damaged solenoid valves.
• Increased Productivity: Since installing Expel, Hanson has reported significant performance and efficiency improvements, which are quantifiable and evidence-based. Thanks to these proven benefits, Hanson UK has installed Expel units across its ready-mix plants nationally.
• Reduced Environmental Impact: By replacing dryers with Expel filters, Hanson has reduced energy consumption, reliance on fossil fuels and their Global Warming Potential (GWP). Expel is far less wasteful and more energy efficient than any other conventional solution.