Agricultural and horticultural machines and machine tools, and parts and fittings therefor; agricultural and horticultural sprayers and spraying machines; tractor-mounted and trailed spraying machines; portable, skid-mounted, trolley-mounted and barrow-mounted spraying machines; hand-held sprayers and backpack sprayers and powder dusting machinery, all for agricultural and horticultural use; parts and fittings for agricultural and horticultural sprayers and spraying machines; nozzles, filters, valves, control valve assemblies, pumps, tanks and containers for liquids, pipe and hose fittings, pipe and hose couplings and unions, all being parts or fittings for agricultural or horticultural sprayers and spraying machines; chemical mixing tanks for use with agricultural and horticultural sprayers and spraying machines, tank washing apparatus; foam bout markers.;