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Zilmet Hydro Pro Potable Expansion Vessel For Electrical Pumps

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  • FREE

2 to 3 Working DaysOrders placed before 1pm are processed the same day, delivery times are between 8am & 6pm Monday to Friday, all deliveries require a signature, for delivery instructions please use the notes section during checkout. Please see below for Items you will also require for this product.

✝ Subject to stock availability. UK Mainland only. Delivery fees and times to Northern Ireland, Scottish Highlands & Isles, Isle of Man, Isle of Wight, Isles of Scilly, and the Channel Isles may vary. Deliveries are made during working days only.

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Brand Zilmet

Zilmet Hydro Pro Expansion Vessel offers a compact design, with the seamless diaphragm which doesn't stretch or crease. There are no bubbles or corners to trap sediment which helps to inhibit bacterial growth; Hydro Pro has international approvals allowing its use with potable water.


The Zilmet HYDRO-PRO tank leaves the factory already tested and pre-pressurised. Air and water do not mix, eliminating any possibility of “water logging” through loss of air to the system; no corrosion.

Technical Features:

Protected pre-charge valve. Durable steel tank. Deep drawn steel shell for extra strength. MIG welding process eliminates interior rough spots and sharp edges preventing damage to the diaphragm and liner. Pre-pressurised air chamber. The butyl diaphragm isolates water from the air. Exclusive internal epoxy-polyester coating. No rusting. Mild steel connection.

  • Potable expansion vessel for electrical pumps, anti-water hammer, and water heaters
  • Vessel Capacity: 2 Litres To 600 Litres
  • Max. operating pressure: 10 bar
  • Max. operating temperature: 70° C
  • Shell: Carbon Steel
  • Membrane: Butyl
  • Colour: Blue/grey
  • Made in Italy

Here at TradePlumbing.co.uk we have voluntarily extended our returns period to 90 days, as we understand that sometimes there may be the odd item left over from a project or you may have an unexpected delay to a project meaning that you need the added peace of mind when ordering products in case a return is necessary.

We truly believe in being able to offer customers a flexible service and this extended period allows us to go that little extra to help you when in need, as long as goods are returned in the same condition as received we are happy to help.

To return any time initially please email your request to our Customer Support team at customerservice@tradeplumbing.co.uk along with your TP - Order Reference, please allow at least 1 working day for response and we will take it from there.

To View our complete Return Policy Click on Return and Refunds