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Turning off the water
Knowing how to turn off the various parts of a household plumbing system is essential. Chingford Plumbers are qualified plumbers.Mains Water Supply ? Direct Feed.You isolate mains water supply into the house at the main stopcock or stop valve usually located under or near the kitchen sink. This will only isolate those parts of the system which are mains/ direct supplies. If there is no stop valve, then turn the water off at the Water Authoritys stop valve out in the street, normally in the pavement outside the boundary of your property. The cover to these is usually marked. If you cannot find it you may need to ask the Water Authority for your area or ask a neighbour. Depending on the valve, you may need a special key to switch this off.Indirect Feed Water Supply.Water which is in a storage cistern in the loft supplies all services and outlets such as bathroom taps and toilet cisterns. To isolate the water coming from the cold water cistern you will need to isolate the outlet valve on the cistern and then fully drain. Hot Water Supply.A combination boiler will supply the hot water direct. In this case closing the mains valve will shut off the water. If you use a (hot) water cylinder which can be found in an airing cupboard this will be an indirect supply. There will be a valve on the pipe from the cold water storage cistern to the hot water cylinder. Closing off this valve will stop the feed to the cylinder and therefore the hot water at the taps. A Chingford Plumber will know these valves.Central Heating Systems.A sealed central heating system will only fill when the filling loop is open. On a vented system, the water level is kept topped up by the feed and expansion cistern. Therefore if you drain down this type you will need to temporarily close off the supply from here till youre ready to refill. Either close off the valve on the incoming pipe to the cistern or, fix a batten across the top and tie up the float valveIsolating Water to Individual Appliances.These are a huge advantage as it means that they can isolate, WC cistern, washing machine or dishwasher and heating runs etc. without having to close off all other outlets on the same pipe work.