Compound control valve

The utility model relates to a fluid transportation, control field such as oil gas field, coal bed gas exploitation, liquid, gas or multi -phase flow disclose a compound control valve, including valve body, case, valve core case, valve barrel, valve barrel seat, case linkage cover, the valve core case is installed the valve core case seat of valve body is downthehole, the case with the valve core case forms first sealed subcomponent as the main valve, the up end of valve core case is equipped with the valve barrel seat, the side -mounting of case has the valve barrel, and the valve barrel and the side relative slip of case, the valve barrel with the valve barrel seat forms the sealed subcomponent of second as vice valve, the case linkage cuff belt move case and valve barrel reciprocating motion. This compound control valve can guarantee that the valve is closed sealedly or is reduced to erode and close sealed influence to the valve to reduce cost, energy consumption and construction work volume. 本实用新型涉及油气田、煤层