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Expansion Vessel

Expansion Vessel Repairs and Replacements

Have you got an expansion vessel in need of a seamless repair? Perhaps you need a set of new installations to replace expansion vessels that have reached the end of their natural lifespan? Regardless of your problem, Titan Mechanical Services are available throughout the UK to provide a bespoke solution for your hot water system pressure tanks. We're equipped with 5 nationwide project hubs which allows us to quickly respond to the likes of leaking expansion vessels and troubleshooting, giving you peace of mind that your enquiry will be answered promptly. Whether it's a malfunctioning diaphragm, pressure inconsistencies, or any other issue, we have the expertise to diagnose the problem through a free of charge survey. Our comprehensive repair and replacement solutions ensure that your expansion vessels are restored to their optimal functionality, minimising downtime and ensuring maximum efficiency. Throughout our history, we've supported some of the nations leading Facilities Management and blue-chip companies with our expansion tank services. So if you're after a reliable and trusted contractor, it's time to feel the difference with Titan Mechanical Services. To ensure best practice is always carried out, all of our expansion vessel repairs and replacements are aligned with standards set in BS EN 13831.

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What Is An Expansion Vessel?

An expansion vessel is a device used in heating, cooling, and hot water systems to accommodate the expansion of fluids as they heat up or experience pressure changes. It helps maintain system pressure and prevents excessive pressure build-up.

How Do I Know If My Expansion Vessel Needs A Repair Or Replacement?

Signs of a problematic expansion vessel include inconsistent pressure, system leaks, water hammering noises, or frequent pressure relief valve discharge. If you observe these issues, it's advisable to have a professional like Titan Mechanical Services inspect the vessel and determine if maintenance or replacement is required.

Why Is An Expansion Vessel Needed?

When a fluid is heated or undergoes pressure changes, it expands. Without an expansion vessel, this expansion could cause damage to the system or lead to pressure fluctuations. An expansion vessel provides a buffer space to accommodate the expanded fluid volume and maintains system stability.


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The team on the day were very cooperative, professional and efficient. The job was completed quickly and all RAMS and CS entry procedures were adhered too. The information requests before the work commenced were all answered quickly and in full. A great service was seen from Titan from start to finish.

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