EXPANSION VESSELS
“Unlike standard expansion vessels, which can create ‘dead legs’ where water stagnates, flow through designs ensure water is continually refreshed.”
Hospitals, GP surgeries, dental practices and care homes are at highest risk of bacterial growth.
expansion vessels, which can create ‘dead legs’ where water stagnates, flow through designs ensure water is continually refreshed. They are most commonly positioned on: • Hot water systems in healthcare facilities: Hospitals, GP surgeries, dental practices and care homes are at the highest risk of bacterial growth due to complex plumbing networks, varying demand and vulnerable occupants. Installing flow through vessels in these environments helps maintain compliance. • Education settings: Schools, colleges and universities often have intermittent water use, with long periods of low demand (eg evenings, weekends and holidays). Flow through vessels reduce the likelihood of stagnation during downtime, protecting students and staff. • Hospitality and leisure: Hotels, gyms, spas and swimming pools all require reliable hot water provision with guaranteed safety for guests and members. The constant turnover of visitors makes hygiene a high priority. • Public and commercial buildings: Offices, shopping centres, airports
and stadiums benefit from flow through vessels to support safe operation of large hot water systems, often with varying peak demand throughout the day. • Residential developments: In multi- residential properties, especially those with centralised plant rooms feeding multiple apartments, flow through vessels support safe water distribution while complying with modern building standards. By ensuring the vessel is part of the active water circuit, operators reduce the risk of stagnation, biofilm development and subsequent contamination. This makes them an important addition to any water safety management plan, especially in environments where duty of care is critical. WHAT IS A FLOWJET VALVE? The Flowjet valve enables four key functions: • Continuous water flow through the bladder, maintaining potable water quality by minimising stagnation. • Isolation, should the expansion vessel need to be removed for service or replacement.
• Drain facility, enabling straightforward maintenance. • Bypass, ensuring system continuity even during intervention. This multi-functional design makes the Flowjet valve a practical choice for engineers, reducing downtime while supporting water safety management plans. WHERE CAN I FIND MORE INFORMATION ABOUT KEEPING WATER SYSTEMS SAFE FOR PUBLIC USE? Altecnic works with, and is a member of, a number of professional industry bodies and associations which advocate the importance of keeping water systems safe from the risks of legionella and other harmful bacteria such as: • The Legionella Control Association • The Water Management Society • The Society of Public Health Engineers • Chartered Institute of Plumbing and Heating Engineers If you would like to speak to a member of the Altecnic Technical team about its
flow through vessels, please email technical@altecnic.co.uk
For more information, contact Chris Reilly, Country Manager for Ireland: T: +353 (0)85 215 2288 - E: chris.reilly@altecnic.co.uk www.altecnic.co.uk
PLUMBING & HEATING MAGAZINE | 87
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