Valves, gauges and other safety fittings for application to boilers and to piping installations for and in connection with boilers. Specification for valves, mountings and fittings|Fluid pressure, Locking and locating devices, Alarm systems, Liquid-level measurement, Temperature, Cast steels, Valve components, Valve plugs, Copper alloys, Pressure gauges, Level control, Hot-water central heating, Hot-water supply systems, Steels, Steam boilers, Installation, Cast-iron, Indicating device components, Hydraulic tests, Flow regulators, Valves, Screwed fittings, Hot-water boilers, Bolted joints, Marking