12 Litre Potable Water Expansion Vessel with Mounting Bracket – 2.5 Bar Pre-Charge, Grey Wall Mounted Pressure Vessel – Replacement for Compatible Zilmet, Aquasystem, Varem & Flamco Units
Maintain effective pressure management in your domestic hot water system with this 12 Litre Potable Water Expansion Vessel. Designed to accommodate the expansion of water as it heats, this pressure vessel helps manage pressure changes within a compatible plumbing or hot water cylinder installation.
Featuring a 12-litre capacity, a stated 2.5 bar pre-charge and a grey finish, the vessel provides a practical replacement option for suitable existing expansion vessels. The included mounting bracket and retaining band allow the vessel to be securely supported in an appropriate installation location.
Please Note: This is a 12-litre potable water expansion vessel with a stated 2.5 bar pre-charge. It is offered as a replacement for compatible Zilmet, Aquasystem, Varem and Flamco installations, but compatibility is not universal. Before purchasing, confirm the required vessel capacity, pressure ratings, connection size, dimensions and mounting arrangement. Installation and pressure adjustment should be carried out by a suitably qualified plumbing or heating professional.
Specifications
-
Brand: Generic
-
Product Type: Potable Water Expansion Vessel
-
Capacity: 12 Litres
-
Stated Pre-Charge Pressure: 2.5 Bar
-
Colour: Grey
-
Mounting Type: Wall Mounted with Bracket
-
Mounting Accessories: Support Bracket and Retaining Band
-
Item Weight: Approximately 3.5kg
-
Application: Compatible Potable Water and Hot Water Expansion Systems
-
Replacement Suitability: Selected Compatible Zilmet, Aquasystem, Varem and Flamco Installations
-
Quantity: 1 Vessel
Key Features
-
12-Litre Vessel Capacity: Provides expansion capacity for compatible potable water and hot water installations.
-
2.5 Bar Pre-Charge: Supplied with a stated pre-charge pressure of 2.5 bar, subject to verification and adjustment for the installation.
-
Pressure Management: Designed to accommodate changes in water volume as temperatures rise, helping manage pressure fluctuations within the system.
-
Potable Water Application: Intended for use in compatible drinking-water and domestic hot water expansion arrangements.
-
Wall Mounting Arrangement: Includes a bracket and retaining band for supporting the vessel in a suitable location.
-
Replacement Option: Can be considered for installations using compatible expansion vessels from Zilmet, Aquasystem, Varem and Flamco.
-
Compact Vessel Design: Suitable for installation where the available space and connection arrangement accommodate the vessel.
-
Grey Finish: Neutral appearance suitable for utility cupboards and plumbing installation areas.
Potable Water Pressure Management
As water heats inside a closed hot water system, its volume increases. An appropriately sized expansion vessel provides space to accommodate this additional volume, helping control pressure increases within the installation.
This 12-litre vessel is designed to perform that function in a compatible potable water system, supporting the operation of the wider pressure management arrangement.
The vessel must be correctly sized and charged for the installation. It does not replace required pressure relief valves or other protective plumbing components.
2.5 Bar Pre-Charge
The expansion vessel has a stated pre-charge pressure of 2.5 bar.
Correct pre-charge pressure is important for the vessel to operate as intended. The required setting depends on the specific plumbing system, incoming water pressure and installation requirements.
A qualified installer should check and, where necessary, adjust the pre-charge in accordance with the relevant system specifications before commissioning.
Mounting Bracket and Retaining Band
The vessel is supplied with a mounting bracket and retaining band designed to hold the expansion vessel securely in a suitable wall-mounted position.
The bracket provides a supporting attachment point, while the retaining band helps secure the vessel against movement during normal operation.
Installation must use appropriate wall fixings and a supporting surface capable of carrying the vessel's operating weight, including the weight of water within it.
Replacement for Compatible Existing Vessels
This expansion vessel may be suitable as a replacement for selected existing potable water expansion vessels associated with the following brands:
- Zilmet
- Aquasystem
- Varem
- Flamco
Replacement suitability depends on the technical requirements of the existing installation. Matching the 12-litre capacity alone does not establish compatibility.
Before ordering, check the existing vessel's connection size, pressure specifications, physical dimensions, mounting arrangement and potable water suitability.
Suitable Applications
-
Domestic Hot Water Systems: Pressure expansion management in compatible closed hot water installations.
-
Hot Water Cylinders: Replacement expansion capacity where a 12-litre potable vessel is specified.
-
Plumbing Maintenance: Replacement of an existing vessel where the required technical specifications match.
-
Water Heating Installations: Integration into a suitable pressure-controlled potable water system.
Package Contents
- 1 x 12 Litre Potable Water Expansion Vessel – Grey
- 1 x Mounting Bracket
- 1 x Retaining Band
Important Information
-
Professional Installation: Installation, pressure adjustment and commissioning should be carried out by a suitably qualified plumbing or heating professional.
-
Compatibility: Not suitable for every boiler, cylinder or expansion vessel installation. Verify all required specifications before purchasing.
-
Pre-Charge: The stated 2.5 bar pre-charge must be checked against the installation requirements.
-
Pressure Rating: The maximum working pressure is not specified here. Confirm the vessel's rated operating limits before installation.
-
Connection Size: Verify the connection type and dimensions against the existing plumbing arrangement.
-
Mounting: Use appropriate fixings and a suitable load-bearing surface. The vessel must be securely supported.
-
System Protection: An expansion vessel does not replace required pressure relief or other protective devices.
-
Potable Water: Confirm that the vessel's markings and documentation meet the requirements of the intended drinking-water installation.
-
Replacement Checks: Check the existing vessel's capacity, pressure rating, pre-charge, physical size and connection before selecting a replacement.
-
Maintenance: Follow the installation and maintenance requirements applicable to the complete plumbing system.
Condition
Brand new unless otherwise stated. The product itself is brand new and unused.
Please note that the outer packaging only may occasionally show minor cosmetic wear from storage or handling; the item inside is unaffected.
Delivery
We aim to dispatch all orders within 1 working day.
Orders are sent using a next day delivery service where applicable.
International delivery is available where supported by the marketplace.
Please refer to the delivery information shown on the marketplace for estimated delivery times and any applicable charges.
Returns
We offer 60 day returns.
Please use the returns process provided by the marketplace where the item was purchased.
The returns terms shown on the individual listing apply.
