Copper Industries manufacture our copper cylinders in the 3 grades described in BS 1566; Grade 1, Grade 2 and Grade 3. The cylinders are graded depending on the thickness of material used to cope with different operating conditions. Grade 3 cylinders are made from 0.7 – 1.2 mm thick copper and are designed to cope with a maximum working head of 10 metres.

Copper Industries only recommend this grade of cylinder operating within the stated parameters and connected to a reservoir or similar high quality water supply. Grade 2 cylinders are slightly thicker (0.9 – 1.4 mm) and are designed to work with a maximum working head of 15 metres. A Grade 2 cylinder would be recommended for most vented installations.

Finally, Grade 1 cylinders have the highest material thickness (1.2 – 2.0 mm) and are designed to work with pressurized systems which have a maximum working head of up to and including 25 metres. Sacrificial anodes are also available for hard water areas.

CAUTION: not all cylinder manufacturers classify their cylinders in the same way. If in doubt contact us directly.

Yes, contact us directly with the capacity, model and specification of your cylinder and we’ll provide you with the standing heat loss per day specific to the cylinder being installed.

Yes we do, available in a limited range of sizes both direct and indirect configurations.

There are many variables affecting the right choice of cylinder for your installation. If in doubt please contact us for advice on which of our products is most applicable for your needs. (We provide an online tool for you to calculate your recommended storage capacity which you can find by going to our calculator page).

Yes, provided the correct type and model of vented cylinder is used, contact us for further details.

A vented cylinder is serviced from a feed and expansion (F&E) tank typically sited in the roof space above the cylinder. As water is drawn from the cylinder it is replaced by water from the F&E tank. When the water in the cylinder is heated it expands and this expansion is taken up and into the F&E tank.

An unvented cylinder is typically fed from the cold mains. On unvented cylinders the dynamics of expansion and contraction of the water as it heats and cools are controlled by an expansion vessel fitted to the cylinder. Unvented cylinders are designed to work with hot water under pressure and are subject to Building Regulations governing the installation and maintenance of the cylinder.

No we don’t, but if you contact us we’ll guide you to your nearest stockist.

Full details of the maintenance requirements for cylinders are contained in the installation and user guide supplied with every cylinder. Please contact us if an additional copy is required. It is important to for you to be aware that current Building Regulations require that the installation and maintenance of unvented (mains pressure) cylinders be carried out by a competent person who holds a recognised unvented cylinder qualification.

Copper Industries unvented cylinders are supplied with all necessary components, an expansion vessel and control devices.

Yes, the unvented cylinder models are generally supplied with two immersion heaters however custom configurations with a combination of 3, 6 and 9 kW immersions are available on request.

If you have a vented cylinder fed from a header tank, you could consider installing an unvented mains pressure cylinder or thermal store.

This is a problem if you want to install an unvented system because all of connections on the cylinders in our range are 22mm diameter which is the required diameter to achieve flow rates to gain the best performance from the cylinder. However, you can install a Copper Industries cylinder into a vented installation provided the feed and expansion tank is appropriately sized.

You’ll find the technical specification including the wiring diagram at the bottom of the MaxiPod product page. Click here to visit.

Technically yes but it is not always practical and depends on the incoming mains water pressure available in each case. If the mains water pressure is low we would recommend one of the cylinders from our combination unit range.