Plumbing terms

Sealed system.The central heating system that is not open to the atmosphere and typically is filled via a temporary filling loop connected to the water supply mains. Hammersmith Plumbers work on sealed systems.Soft water.The term used to describe water that has no calcium held in suspension within it, and which may contain additional carbon dioxide, making it more acidic.Storage cistern.A large open topped vessel, usually located in the roof space are lost, designed to hold water to supply a system of hot and cold water.P trap.A trap located on the outlets of a sanitary appliance, with its outlet horizontal to the floor.Pump.A device used to move a volume of water. One example would be a circulating pump used in a central heating system to force the water around the system.Room sealed appliance.A fuel burning appliance that takes its air supply from outside the building as well as discharging the flue products outside, usually at a point adjacent to the air intake, in which case it is referred to as it as a balanced flue. With the flue discharges at a different location from the air intake it is not in balance.Solder.An alloy used to make capillary joints in copper tube. The solder may contain lead and tin or it may be led free, typically consisting of copper and tin. A Hammersmith Plumber can solder.Thermostat.A device designed to automatically open or close electrical the circuit as the temperature increases or decreases.Radiant heating.A form of infrared heating, which is designed only to warm the objects upon which the waves of heat land, (typically the building structure or the occupants of the building). It does not warm the air.Overflow pipe.The type found in toilet and storage tanks, designed to remove the excess water filling the tanks when the float operated valve fails to close off the water supply.