Wholesale, Heating, ventilation and air conditioning (HVAC) plant for the metal industry, Heating, ventilation, air conditioning (HVAC) and refrigeration equipment, Construction, Ventilation, air conditioning (VAC) plants, Cocks, metal, for gas cooking ranges and space heaters, Metal pipework, valves and containers, Valves, metal, for corrosive liquids, Valves, metal, cryogenic, Valves, cocks, taps and fittings, metal, by use