The closing time of the electric head of the electric gate valve does not exceed 30S. What is the effect of the open closing time? The opening and closing time of the electric gate valve? Turning to the left is to close, and to the right is to open the valve. Pay attention to the arrow mark on the valve. The switching time of the electric head of the electric gate valve is determined by the speed, pitch, and forming
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The strength test of the gate valve is the same as that of the stop valve. There are two methods for the sealing test of the gate valve. ① Open the gate to increase the pressure in the valve to the specified value; then close the gate and immediately take out the gate valve to check for leakage at the seals on both sides of the gate or directly inject the test medium into the plug on the valve cover to the specified
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The disc of the butterfly valve is that the disc has a shaft rotating on the position of the valve seat. The angle of the rotation determines the opening and closing degree of the valve. The following is the main topic: how to select the electric butterfly valve correctly. 1. Stem diameter One situation is the multi-turn type rising stem valve, which cannot be installed on the electric valve. Therefore, when purc
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Working principle of electric butterfly valve: The working power supply usually includes: AC220V, AC380V, etc. Input signal: 4~20mA 0~10v and other weak current signals. After the adjustment type electric actuator and the valve stem are connected and debugged, the electric energy is used as the driving force to drive the hard-sealed butterfly valve plate for a 0-90° partial rotation. Receive the 4-20mA signal of
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Electric butterfly valves belong to a variety of electric valves and electric regulating valves. Electric butterfly valve connection methods mainly include: flange type and wafer type; electric butterfly valve sealing forms mainly include: rubber seal and metal seal. The electric butterfly valve controls the switch of the butterfly valve through the power signal. The product can be used as a shut-off valve, control v
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According to the characteristics of butterfly valve, the following principles should be followed when selecting butterfly valves: ① Compared with gate valves, globe valves, ball valves, plug valves, etc., butterfly valves have the smallest structural size, lightest weight, and low price. Therefore, for large-size pipelines, replacing other shut-off valves with butterfly valves is very beneficial to reduce the constr
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