You are here: Home>Special Groups>DST TST Valve DST TST Valve View more specifications DST TST Valve for you Show: 8 16 32 item per page View gallery View list View gallery View list goto 5" Tubing Testing Valve Flapper type for DST Operation in well testing TST valve - 5" The 5" Tubing testing valve/TST valve is applied for Drill stem testing/DST operation in cased hole well testing for H2S above 175oC working condition View the Video Well Testing Tubing String Testing Valve 5" x 15000psi TST - 5" Well Testing Tubing String Testing valve is named TST valve, applied for Drill Stem Testing Operation in Well Testing, the TST valve is used for H2S 8" Super safety valve for Drill stem testing operation Full H2S Super safety valve - 8" The Super Safety Valve ZZ TOP manufactured is for Full H2S drill stem testing operation, the specification of SSV is 8" x 15000 psi for HPHT operation Drill stem testing TST tubing string tester valve flapper type 5" TST Valve Drill stem testing tools tubing string testing valve TST is for cased hole full bore type in size 3 7/8" and 5" in owrking pressure 105Mpa. Show: 8 16 32 item per page View gallery View list View gallery View list