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Equalizing Standing Valves Equalizing standing valves are normally used in conjunction with seating nipples to prevent produced fluid in the tubing from being forced down into the well bore when high pressure gas is injected under a slug of fluid. The pressure above and below the standing valve can be equalized by wireline to eliminate the need to pull a wet string of tubing. BST manufactures standing valves in most of the popular sizes. Features:
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