Hose couplings, flat and cone type, metal, Metal pipework, valves and containers, Construction, Hose and pipe couplings, bayonet joint, metal, Pipe, tube and hose fittings, metal, Valves, cocks, taps and fittings, metal, by use, Valves, cocks, taps and fittings, by metal type, Valves, metal, for road and rail tankers, Liquid level or float switches and level alarms, Measuring and testing equipment