AN ASSEMBLY CONSISTING OF A PNEUMATIC ACTUATOR, A BUTTERFLY VALVE , A ROD AND A SPINDLE. THE ASSEMBLY IS WELDED IN TO AUTOMOTIVE EXHAUST SYSTEMS AND IS USED TO CONTROL THE FLOW OF EXHAUST GASSES. WHEN A VACCUUM IS APPLIED TO THE ACTUATOR, THE ROD IS PULLED INSIDE AGAINST A SPRING. THE ROD IS ATTACHED TO A LEVER, WHICH IN TURN IS CONNECTED TO THE SPINDLE IN THE VALVE. AS THE ROD RETRACTS INSIDE THE ACTUATOR THE LEVER AND SPINDLE ROTATE. A BUTTERFLY VALVE IS ATTACHED TO THE SPINDLE WHICH CLOSES THE VALVE AS VACUUM IS APPLIED TO THE ACTUATOR. WHEN THE VACUUM IS 'RELEASED' THE SPRING INSIDE THE ACTUATOR PUSHES THE ROD OUT AND THE VALVE OPENS.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S: GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 8481 TAPS, COCKS, VALVES AND SIMILAR APPLIANCES FOR PIPES, BOILER SHELLS, TANKS, VATS OR THE LIKE, INCLUDING PRESSURE-REDUCING VALVES AND THERMOSTATICALLY CONTROLLED VALVES GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 848180 GLOBE VALVES CN CODE 84818085 BUTTERFLY VALVES TARIC CODE 8481808590 OTHER THAN BUTTERFLY VALVES ALSO CLASSIFIED IN ACCORDANCE WITH: SECTION XVII NOTE 2 (e) THE SCOPE OF THE HARMONISED SYSTEM EXPLANATORY NOTE 8481