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Whisper Pumps are authorised UK distributors of Zilmet expansion vessels.

Zilmet manufacture high quality, reliable and cost-effective pressure vessels which are designed to maximise the efficiency of your plumbing installation, whether domestic, commercial or industrial. 

We supply the full range of Zilmet vessels including the Cal-Pro, Ultra Pro and the Hydro Pro.

If you can't see the Zilmet vessel you're looking for listed below, don't worry, there's thousands of vessels available so our full catalogue isn't on our website. Simply call us on 01777 871100 or contact us here for a quote.

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Zilmet Ultra Pro Expansion Vessels
Zilmet 110 Ultra Pro pressure vessels with food grade replaceable membranes. Ideal for use as exp..
Zilmet Hydro Pro Expansion Vessels
Zilmet Hydro Pro expansion vessels or pressure vessels, with fixed butyl diaphragm and ..
Zilmet INOX Pro Stainless Steel Expansion Vessels
Zilmet Inox-Pro stainless steel expansion vessels for aggressive water conditions...
Zilmet Cal-Pro Central Heating Expansion Vessels
Zilmet CAL-PRO - are membrane expansion tanks for closed circuit central heating systems. ..
Zilmet Central Heating Boiler Expansion Vessels
Zimet OEM-PRO replacement  expansion vessels for central heating boilers. The wide ..
Zilmet Intafil
Zilmet's Intafil sealed heating system filling kit including a filling loop, double check valve a..
Replacement Ultra Pro Membranes
Replacement membrane for Zilmet Ultra Pro expansion vessels, in butyl rubber for drinking wa..
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Whisper Pumps Ltd, Leen Court, Boughton, Newark, Nottinghamshire, NG22 9ZD