End of an era for European-manufactured water treatment pressure vessels

Pentair has confirmed its decision to discontinue production of Structural composite pressure vessels at its manufacturing facility in Herentals, Belgium, marking a significant change for the European water treatment industry.

The decision, announced in April 2026, is expected to see production at the Belgian factory cease by the end of the year, bringing an end to many years of manufacturing Structural pressure vessels at the site.

Why is Pentair closing its Belgian factory?

The closure follows increasing pressure on European manufacturers from rising energy prices, labour costs and competition from lower-cost manufacturing countries.

These challenges have made it increasingly difficult for European production facilities to compete on price in the global market.

The Herentals facility has been an important manufacturer of composite pressure vessels for residential, commercial and industrial water treatment applications. Its closure is expected to affect approximately 120 manufacturing jobs.

What does this mean for Structural pressure vessel availability?

Structural pressure vessels have been widely used throughout the water treatment industry for many years, particularly in water softening, filtration and industrial treatment systems.

Known for their durable composite construction and extensive range of sizes and configurations, they have been a popular choice among water treatment equipment manufacturers and installers.

Pentair's decision means that availability of European-manufactured Structural vessels will become increasingly limited as remaining stock is exhausted.

Production capacity for several ranges was already fully allocated during 2026, with order acceptance for other models ending earlier in the year.

Customers requiring specific Structural vessels, particularly larger industrial sizes or less common configurations, may therefore find that their usual models are no longer available.

What alternatives are available?

Although the closure represents a significant change, composite pressure vessels remain widely available from established manufacturers around the world.

At GAPS Water Treatment Ltd, we are working closely with our suppliers to maintain a comprehensive range of pressure vessels suitable for residential, commercial and industrial water treatment applications.

Our suppliers are introducing alternative ranges, including PWG-branded composite pressure vessels, to replace discontinued Structural models.

Additional products are also being evaluated to ensure continued availability across the widest possible range of sizes and configurations.

Where an original Structural vessel is no longer available, we can assist customers in identifying a suitable alternative.

However, vessels from different manufacturers are not necessarily identical. Dimensions, port configurations, pressure ratings, certifications and connection compatibility should always be checked before selecting a replacement.

Looking ahead

The closure of Pentair's Belgian manufacturing facility reflects the wider challenges facing European manufacturing.

While it is disappointing to see such an established European facility close, the water treatment industry continues to evolve, with alternative products entering the market.

GAPS Water Treatment Ltd remains committed to supplying reliable, competitively priced composite pressure vessels and supporting customers through the transition away from Structural products.

If you need assistance identifying an alternative to a discontinued Structural pressure vessel, please email sales@gapswater.co.uk with the vessel size, model number and connection requirements.