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Zilmet Ultra Pro Expansion Vessel with interchangeable membrane for Potable Water Vertical 300ltr

In stock
  • Estimated Delivery
  • FREE

1 to 2 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.

Was £717.02 Special Price £521.81 (inc VAT)
  • Diameter : 630mm
  • Height : 1370mm
  • Orientation : Vertical
  • Connection : 11/2"
  • Capacity : 300
  • Working Temperature : Minus 10 Deg C to 99 Deg C
  • Max Working Pressure : 10 Bar
  • Testing Pressure : 15 Bar, except for the 1000 Litre which has a working pressure of 8 Bar
  • Pre-Charge Pressure : 2 Bar
  • WRAS Approved 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.

More Information
SKU 6195
Manufacturer ID ZI-318300
Guarantee Length 5 Year
Diameter 650mm
Length 1037mm
Max Working Pressure (Bar) 10 bar
Horizontal or Vertical Vertical
Connection Type 1.5"
Capacity 300
An Expansion Vessel is used to balance pressure in a sealed central heating system, as water cannot be compressed. Sometimes used by customers as an accumulator, an expansion vessel contains a bladder or diaphragm that is charged with air to a suitable pressure to help when demand for water is higher. This WRAS approved Vertical expansion vessel is suitable for Potable water, comes with an interchangeable (replaceable) membrane for maintenance purposes and is fitted with a 1.5" size connection.
5 year guarantee

Kay Features:

  • Diameter : 630mm
  • Height : 1370mm
  • Orientation : Vertical
  • Connection : 11/2"
  • Capacity : 300
  • Working Temperature : Minus 10 Deg C to 99 Deg C
  • Max Working Pressure : 10 Bar
  • Testing Pressure : 15 Bar, except for the 1000 Litre which has a working pressure of 8 Bar
  • Pre-Charge Pressure : 2 Bar
  • WRAS Approved product




expansion vessel for potable water, pumps and booster sets
capacity: from 24 - 3000 litres

ULTRA-PRO pressure tanks are the best choice for irrigation pumps, centrifugal pumps, submersible pumps and
for booster sets. The capacity of a bladder tank is larger than the capacity of common storage tanks: the same
performance can be obtained with a smaller volume, allowing minimum pump starts therefore saving energy.
The range of different sizes, availability of vertical and horizontal models, together the choice between galvanised
or stainless steel fl anges ensure that the ULTRA-PRO pressure tanks meet the requirements of the end user. Pressure
tanks from Zilmet undergo 100% factory testing procedures and are certifi ed according to PED 97/23/EC.
The bladder, which is suitable for alimentary purposes, is fi xed at both ends avoiding any possible contact against
the inner tank surface.
ULTRA-PRO pressure tanks offer unlimited service as the bladder is easily replaceable.

Technical features
MIG welded carbon steel body without internal rough spots or sharp edges. Replaceable bladder suitable for use
with potable water. Painted externally with long lasting epoxy powder. Mild steel or stainless steel fl anges for use
with aggressive water.

When the pump starts, water enters the membrane tank as system pressure passes the pressure precharge using
the whole capacity of the tank. Only usable water is stored. When the pressure in the chamber reaches the
maximum system pressure, the pump stops working. The tank is fi lled to its maximum capacity. When water will be
needed again, pressure in the airside will push water into the system. Since Zilmet ULTRA-PRO tank does not water
log and delivers all possible water, minimum pump starts are assured with saving on energy consumption and
increasing the pump life


Cold water accumulators buffer tank working on mains pressure precharge to increase your water flow

For example if you run your water tap at 4 am you will find that there is a greater amount of pressure coming from your mains outlet, this pressure will be stored in your Buffer tank and will allow you to use this over the following day. Also as its a tank you are able to increase the flow of water into your property. This giving you a greater volume of water and better pressure than you would have in the middle of the day. This can give the property the feeling of a massive pump being installed in to the home when its only the use of the stored pressure in the buffer tank. Now this pressure will only be as good as the pressure your property has at any one time and the volume will only be as good as the size of tank you choose and the outlet and size of pipework from the tank. This is a relatively easy system to install and give massive benefits to the home and does allow bigger shower heads and quicker filling of baths or if used in commercial use huge gains in the volume of water available. This tanks can also be linked together to give huge amounts of water volume. This really is a maxing fix for a home with a low water pressure due to large demand on volume


Click Below For Technical Sheet

Hudson Reed A304 Technical Information

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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