The feed and expansion tank, header tank, or feed and expansion cistern as it is technically known, is a cistern which supplies the central heating circuit with water and accommodates the expansion of the water when it is heated by the boiler. It is typically made out of plastic. However, like cold water storage cisterns, …
An overflow pipe leaking or dripping is most likely due to a faulty cistern ball valve. You can fix this by replacing the valve or some of its internal components. A dripping overflow pipe can also indicate a fault somewhere else on your plumbing system. This guide should help you diagnose the problem. On the …
Overflow pipe leaking: why is it leaking & how to fix it Read More »
A Part 1 ball valve or Portsmouth ball valve is a ball valve made to British Standard specification 1212, Part 1. It consists of a piston inside a brass housing, with a float arm secured to the valve via a split pin. Inside the piston is a slot which accommodates the end of the float arm, and on …
Part 1 ball valve: what is it & how does it work? Read More »
An overflow is an important part of a cistern, and serves two purposes in the event of a fault: to take away excess water in order to prevent structural damage to a property, and to indicate to the homeowner that there is a problem – in most cases, a faulty ball valve. An overflow pipe which exits …
A ball valve or float valve, or less commonly, a ballcock, is a valve which controls the flow of water into a cistern via a plastic or metal float on the surface of the water. When water is drawn out of the cistern, the float falls with the water level. This opens the valve and causes water to …