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Description: wellhead hydraulic control valve is installed at the wellhead for testing during the closed wellhead to prevent blowouts accident. Valve opening and closing is to rely on the hydraulic remote control, convenient and reliable operation. The set of simple structure, easy maintenance, safe and reliable, is the ideal equipment oilfield civilization job. How it works: Under normal circumstances, the ball valve is closed, when the need to open the valve, the pressure to control valve piston to open by pump operator. Open the drain valve on the hand pump, you can make quick closing valve. In addition, the device is also equipped with a set of sets of emergency shut-in devices. When the wellhead accident, no operator pump as long as the emergency shut-relief valve to open the device can make the ball quickly closed. Balancing valve installed on the lower joint at the ball valve and its role in the closed condition, opens the upper and lower portions valve pressure balance valve allows rapid equilibrium. |