Product Description

The Robokit Compact vessel kit offers a smart solution for the installation of new and replacement boiler expansion vessels.

Thanks to its slim profile design, the vessel can be easily installed into a kitchen cupboard, airing cupboard or in other small spaces elsewhere in the property.

The kit consists of the following:-

1x           Flat 8 Litre expansion vessel with mounting bracket

1x           5-way connection manifold

1x           pressure relief valve with pressure gauge

1x           System filling loop

The vessel kit can also be a viable option where it the existing pressure vessel fitted inside the boiler has failed, and replacing it would involve a considerable amount of time stripping down the boiler to access the vessel. Instead this vessel can be added onto the system, thereby restoring the expansion capacity in the heating circuit.

Also available in 12Ltr and 18Ltr kits

Tech Tips

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Pumps & Pressurisation > Expansion Vessels

Category image for Expansion Vessels

Expansion vessels are water storage tanks which protect heating and hot water systems from excessive pressure, as the system pressure builds as the water is heated. Within a pressure vessel is a rubber diaphragm (membrane) behind which a volume of air is contained, on the other side of the membrane is the system water. As the water heats and expands, the air is compressed, allowing the system pressure to safely increase within risk of burst pipework or appliances.

PHC stock a comprehensive range of different expansion vessels for heating, potable water and high temperature solar applications. We carry vessels from leading manufacturers including Zilmet, Aquasystem, Reliance Water Controls, Varem, Watts, Cimm and more. We also supply expansion vessel parts and accessories including replacement membranes, sealed system kits, mounting brackets, schrader valves and valve removal tools, connection hoses and fittings, manual and electric expansion vessel pumps and pressure hoses.

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