Electric pvc ball valve butterfly valve is one of the m […]
Electric pvc ball valve butterfly valve is one of the most commonly used valve varieties used in industrial pipelines. Butterfly valves are smaller in size, less in materials, lighter in weight, larger in diameter and more economical than other valves. The electric actuator rotates slowly by 90°, and the operation is simple. At the same time, the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, and it can be carried out when the opening degree is between about 15° and 70°. Sensitive flow control, so large-diameter flow adjustment, butterfly valve has greater advantages. Not suitable for process media with particles and high temperature.
Definition of electric gate valve:
The opening and closing part of the electric gate valve is a gate. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and closed. It is not suitable for adjustment and throttling. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used wedge gate valve form a wedge shape, and the wedge angle varies with the valve parameters, usually 5o. Most gate valves are forcedly sealed, that is, when the valve is closed, it is necessary to force the gate plate against the valve seat by external force to ensure the sealing of the sealing surface.
1 The electric butterfly valve is an angular stroke valve with 0-90 degree rotation. It has good specific flow characteristics, small size and high cost performance.
2 The straight stroke control mode of the electric gate valve moving up and down can be used as a cut-off valve, which is large and expensive
3 The electric butterfly valve can not be used in high temperature and high pressure working conditions and is not wear-resistant. Electric gate valve is generally used to close the medium with particulate material, suitable for high temperature and high pressure working conditions