1. External leakage is blocked, internal leakage is easy to control, and it is safe to use Internal and external leaks are elements that endanger safety. Other automatic control valves usually extend the valve stem, and the rotation or movement of the valve core is controlled by electric, pneumatic and hydraulic actuators. All this needs to solve the problem of external leakage of the dynamic seal of the long-term a
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Solenoid valve are divided into three categories in principle, direct-acting, step-by-step direct-acting, and pilot-operated. 1. Direct acting solenoid valve There are two types: normally closed and normally open. The normally closed type is in a closed state when the power is off. When the coil is energized, an electromagnetic force is generated, so that the moving iron core overcomes the spring force and the stat
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Solenoid valve is an industrial equipment controlled by electromagnetic, which adjusts the direction, flow, speed and other parameters of the medium in the industrial control system. When the solenoid valve is not powered on, the valve needle blocks the passage of the valve body under the action of the spring, and the solenoid valve is in the cut-off state. When the coil is powered on, the coil generates a magneti
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How to choose a globe valve? Before choosing a shut-off valve, you need to determine its purpose, whether the valve is used to regulate or stop the flow of fluid, and then you need to determine the type of medium circulating in the system: gas or liquid? Is the medium corrosive, chemically neutral, food or medical liquid requiring special hygiene conditions? When it comes to operating the valve, one needs to know w
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1. Floating ball valve The main structural features of the floating ball valve are: (1) The valve is equipped with open and closed position indications; (2) Locking device; (3) Anti-flying structure of valve stem; (4) Anti-static device; (5) Fireproof structure; (6) Unique valve seat sealing structure; (7) The middle flange (the connecting part of the valve body and the left body) has no leakage structure.
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The ball valve is evolved from the plug valve. Its opening and closing part is a sphere, which uses the sphere to rotate 90° around the axis of the valve stem to achieve the purpose of opening and closing. The ball valve is mainly used to cut off, distribute and change the direction of the medium flow in the pipeline. The ball valve designed as a V-shaped opening also has a good flow adjustment function. advanta
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