Zilmet Ultra Inox-Pro Vertical Stainless Steel Expansion Vessel - 10 Bar - 100Ltr

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£1,568.30 RRP £1,411.34 £1,176.12
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ULTRA-INOX PRO: The expansion tanks in this line are entirely made of stainless steel. They are especially used for systems that produce sanitary hot water produced by a boiler or from plate heat exchangers.

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Operation Overview

The ULTRA INOX PRO range of Expansion Vessels is specifically designed for Unvented Potable Systems to deal with increased water volume resulting from heat expansion, solving issues of “water hammer” phenomenon, or reducing number of pump operations or duration of pump run. The stainless steel construction makes this vessel ideal for aggressive installation environments (E.g. coastal areas) and areas where environmental hygiene is of paramount concern. The interchangeable membrane gives unparalleled longevity.

Operation overview for Heat Expansion Purposes

The purpose of these vessels is to accommodate the increased liquid volume which occurs during system heating in an Unvented Circuit. A pressurised membrane allows ingress/egress of the liquid during periods of heating / cooling thus providing space for the expanded fluid volume to reside and prevent system pressure increase.
The sensible contraction of system water volume during cooling periods is enabled by means of a compressed air cushion which returns this temporarily expanded volume to the system.

The correct size of vessel must be considered prior to installation and installed by appropriately trained engineers. Careful consideration of pre charge must also be made as this is dependant on the application of the vessel. The larger size range available accommodates the larger systems and is also compatible with chilled water systems.

Operation overview for Water Hammer (Shock) Arrester Purposes

Also known as Hydraulic Shock, water hammer is a specific phenomenon and is not a “catch all” phrase for noisy pipes. The fitting of an ULTRA INOX PRO vessel will not resolve system noises where the root cause is excessive dynamic pressure, improperly clipped pipework or pipe bore restrictions due to clogged filters, burrs on cut pipe or excessive “bushing down” of distribution pipework.

Water hammer is caused when a water supply outlet is closed very suddenly. This causes a change in the momentum of the water when the system suddenly goes from a lower running pressure to a higher static pressure. This momentum impacts against the now closed outlet resulting in a potentially loud banging noise. This is commonly found in “quarter turn” type tap outlets and washing machines with solenoids controlling flow.

Siting an ULTRA INOX PRO as close to the source of the noise as possible will cause the vessels diaphragm to flex in response to this momentum change and prevent the audible impact against the terminal fittings. The pre charge should ideally be set to just slightly above the dynamic pressure of the system it is fitted to.

More Information
Price £1,176.12
Manufacturer Zilmet
Guarantee 1 year guarantee
Dimensions Diameter: 450mm x Height: 910mm
Bars 10 bar
Capacity 100Ltr
Pump Type Pressure Vessel
Duty Type Domestic
Layout Vertical
Diameter 450mm
Height 910mm
Connection Size 1 inch
Manufacturers Part Number ZI-1110010002

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Pump Sales Direct (PSD) offers a free standard delivery service (2-3 working days) to mainland UK*. The free standard delivery service relates to all pumps on our website and also individually purchased spares or accessories over the value of £50 (before VAT). Individual spares or accessories purchased under £50 will incur a £6.95 delivery charge.

PSD also offers a next day delivery service at a charge of £12.50*, provided we receive your order before 3:30pm Monday to Friday (excludes Weekends and Bank Holidays).

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UK Delivery Charge Options:-

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Next Working Day Delivery before 10.30 am (on orders placed before 3:30pm)* - £25.00

Next Working Day Delivery before 12.00pm (on orders placed before 3:30pm)* - £15.00

Saturday AM Delivery before 12.00pm*- £35.00

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UK Islands & Republic of Ireland Standard Delivery - £60.00

*Excludes UK Islands, Republic of Ireland, Northern Ireland and Scottish Highlands.

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