FIELD: oil industry; oil, gas and water gathering and preparation systems in oil fields. SUBSTANCE: device includes cylindrical housing with unloading chamber, shut-off members located coaxially relative to hollow float which is arranged in guide sleeve protecting it against high-velocity flow. Float is connected with shut-off members by means of hollow rod which brings cavity of unloading chamber in communication with cavity after outlet hole of housing. EFFECT: enhanced efficiency. 2 dwg
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