Terms in Plumbing

Access Cover:

A cover for a point where access can be gained for internal inspection of a drain.

Air Gap:

A distance maintainable at the top of an appliance, such as a single basin, at which the water would spill over onto the floor to the underside of the tap outlet. An air gap is maintained to prevent back siphonage of water from the appliance into the supply pipe.

Air Separator:

Also referred to as a de-aerator, this device is sometimes found in a fully pumped central heating system to maintain the neutral point, where the cold feed and vent pipes join the system.

Back Boiler:

Term generally given to a boiler that has been installed behind the fire opening in the living room or lounge. Worcester Boiler Repair London can work on a back boilers.

Balancing:

The term used to indicate that the throttling down of the flow of water to certain radiators to force the water to flow to those further away from the pump, thereby allowing them to receive some of the hot water. Worcester Boiler Service London can balance systems.

Basin Spanner:

A special spanner designed to reach the nuts located up behind the backs and sinks where there is restricted room to turn a normal spanner.

Earth Bonding:

A system where specific metal pipework is connected either together or to the main earth terminal in order to combat the potential of an electric shock arising from a faulty electrical installation.

Combi-Boiler:

A design of boiler (combination) that is used for the central heating and as a unit to instantaneously heat water going to hot water outlets. It does away with the need to have a hot water storage cylinder.

Compression Joints:

Fittings used to join pipes together. They incorporate a compression ring that is clamped onto the pipe and forced up hard against the body of a fitting.