Storage Cisterns

Cisterns that are used for water storage today are manufactured out of tough plastic material. They need to have good solid support when they are fitted as they may stretch possibly split at some point. Older galvanised tanks did not require this kind of support. They are usually left in the roof space. Bankside Plumbers will remove and replace this item. There are still older around and should be disposed of safely and responsibly. Seek professional advice on this.


The new cistern should have a minimum capacity of 100litres if it is fitted to supply only, either a system of cold, or a system of hot water, however, this volume will need to be at least 200litres ideally 250Ltrs if it is fitted to supply both cold and hot supplies. To get the best possible pressure at the outlets, like showers or taps etc. the cistern should be located as high as possible, which will probably require the construction of a supporting frame. If you make a support it is essential that you use sufficiently strong timber and breasts to make sure that it can take the weight of the cistern when it has its full capacity of water. South Bank Plumbers know all the cylinder and system volumes. The weight of water is quite misleading as for example, 1litre of water weighs 1kg, therefore, 250L of water would weigh 250kg which is equal to a quarter of at ton.


A point to note is that no jointing pastes compounds are used or allowed to make the connections to the cylinder as these will have a detrimental effect on its plastic walls, causing it to break down and reduce the lifespan drastically. Any connections are made to the cylinder by tank connectors. These are simply passed through a hole made in the cylinder, with a plastic washer, and when the fitting is tightened it clamps tightly to the system wall.