A SELF FILL TUBING TESTER VALVE, PART OF A DRILL STEM TESTING LINE. THE FLAPPER VALVE IN THE TOOL WILL ONLY SUPPORT PRESSURE FROM ABOVE THEREBY ALLOWING COMPLETION FLUID TO ENTER THE TEST STRING VIA THE BYPASS. THE BASIC FUNCTIONS ARE TO ALLOW FLUID FILL OF THE TOOL STRING DURING ENTRY AND TO PROVIDE A METHOD OF PRESSURE TESTING TUBULARS WHILE RUNNING IN THE HOLE. THE VALVE IS HINGED ON ONE SIDE, ONLY MOVING IN ONE DIRECTION. THE VALVE IS MADE FROM STEEL. TOOL LENGTH 1879 MM. OD: 127 MM. TOOL WEIGHT 260 KG. WHEN REQUIRED THE SFTTV CAN BE FIRED OPEN BY APPLIED ANNULUS PRESSURE OF ABOUT 500 psi.

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 FOR 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 8481 30 FOR CHECK (NON-RETURN) VALVES CN CODE 848130 91 FOR OTHER: OF CAST IRON OR STEEL TARIC 84813091 99 FOR OTHER THAN ELSEWHERE SPECIFIED ALSO CLASSIFIED IN ACCORDANCE WITH:- HARMONISED SYSTEM EXPLANATORY NOTES (HSEN) (3) TO HEADING 8481