It consists of gate valve of metal-to-metal sealing and pneumatic actuator which is the operating part of SSV. When it works, the high-pressure draft flow into the upper cylinder chamber and compres
Design Features:l reverse-acting gate;l the hydraulic actuator, diaphragm and piston actuator can serve for the clients requirements according to different working conditions. There a
Surface safety valve (SSV) is divided into two types: hydraulic and pneumatic- operated type. It can automatically shut off the wellhead and pipeline when it senses the pressure is higher or lower
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