Pipework
Low Pressure Gas Pipe
Low pressure gas supply pipe (below 75 mbar)
BS 1553-1
Medium Pressure Gas Pipe
Medium pressure gas pipe (75 mbar to 2 bar)
BS 1553-1
Concealed Gas Pipe
Gas pipe run concealed within the building structure
BS 1553-1
Tee Piece
Gas pipe tee junction
BS 1553-1
Test Point
Gas pressure test point nipple
BS 6891 / Gas Safe
Meters & Controls
Gas Meter
Gas supply meter position
BS 1553-1
Emergency Control Valve
Emergency gas shut-off valve (ECV) at meter
BS 1553-1 / Gas Safe
Isolating Valve
Manual gas isolation valve for individual appliance
BS 1553-1
Pressure Regulator
Gas pressure regulator / governor
BS 1553-1
Appliances
Gas Boiler
Wall-hung or floor-standing gas boiler
BS 1553-1 / Gas Safe
Gas Fire / Heater
Gas-fired room heater or decorative fire
BS 1553-1
Gas Hob / Cooktop
Gas cooking hob / cooktop
BS 1553-1
Gas Oven
Gas-fired oven / range cooker
BS 1553-1
Ventilation & Flues
Flue Terminal
Flue / chimney terminal point (balanced or open flue)
BS 5440 / Gas Safe
Air Vent
Fixed ventilation opening for combustion air supply
BS 5440-2 / Gas Safe
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