| Standard International Trade Classification (SITC) - level 2 - Division | 74 | General industrial machinery and equipment, n.e.s., and machine parts, n.e.s. | 
                
                  
                    | Standard International Trade Classification (SITC) - level 4 - Sub-group | 7471 | Pressure-reducing valves | 
                
                  
                    | Standard International Trade Classification (SITC) - level 4 - Sub-group | 7472 | Valves for oleohydraulic or pneumatic transmissions | 
                
                  
                    | Standard International Trade Classification (SITC) - level 4 - Sub-group | 7473 | Check valves | 
                
                  
                    | Standard International Trade Classification (SITC) - level 4 - Sub-group | 7474 | Safety or relief valves | 
                
                  
                    | Standard International Trade Classification (SITC) - level 4 - Sub-group | 7478 | Taps, cocks, valves and similar appliances, n.e.s. | 
                
                  
                    | Standard International Trade Classification (SITC) - level 4 - Sub-group | 7479 | Parts for the appliances of heading 747 |