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DAB-V
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The DAB-V is a dual-action ball valve that is controlled by applying pressure to the annulus. This valve can be used to pressure test a DST string and can replace the FPT-V flapper valve as well as function as a simple DST shut-in valve.
The DAB-V is a dual-action ball valve that is controlled by applying pressure to the annulus. This valve can be used to pressure test a DST string and can replace the FPT-V flapper valve as well as function as a simple DST shut-in valve.