Drill Stem Testing Tools tubing string testing valve, or TST Valve is a full-opening valve used to pressure-test the work string while running in the hole. The valve is operated after it is stung into a permanent packer or a retrievable packer is set.
Boban design and manufactured various sizes DST tools for Open-hole, Cased-hole & Slim hole, and also we available spares for international brands.




| Product Name | Tubing string testing TST valve |
| Application | Well Testing |
| O.D | 3-1/8", 3-7/8", 5" |
| Working Pressure | 10K/15K PSI |
| Working Temperature | -29~+204ºC |
| Connection | EUE/IF/CAS |
| Services | Mud, Crude Oil, Natural gas with H2S and acid |








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