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Logic valve precautions and selection

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Logic valve precautions and selection
When selecting a logic valve, according to the flow required by the system, choose a two-way cartridge valve when it is greater than or equal to 200l/min, and choose a threaded cartridge logic valve when it is less than 20l/min. The spool of the cartridge assembly is available with or without a tail, and the one with a tail has the functions of buffering and throttling. The spool is also available in a variety of area ratios, and the springs are available in a variety of stiffnesses, allowing for a variety of cracking pressures.

Some domestic cartridge components are equipped with an O-ring between the valve core and the valve sleeve, which can ensure sealing, but the response speed is slow. The damping holes in the control cover plate and valve core have various diameters. Large damping holes have fast response speed, but large impact, and vice versa. If the action of the logic valve will affect the function of the system in sequence, special care should be taken when selecting the diameter of the orifice. There are many types of control covers, which should be carefully selected according to the system conditions.

When designing the valve block, the positioning hole of the cover plate should be drawn, and the code of each oil port should be marked for easy assembly and maintenance. The model should be selected according to the flow and pressure of the system and its flow-pressure curve. If it is too small, the pressure loss of the system will be too large and the system will heat up. If the model is too large, it will make the system huge and cause economic waste.

There are two kinds of sealing materials for the logic valve, the fluororubber seal is suitable for phosphate medium, and the nitrile rubber seal is suitable for mineral oil medium.Fluorine lined butterfly valve

Due to its high pressure and large flow characteristics, the logic valve is especially suitable for the valve rapid hydraulic drive device. There are mature logic valve products at home and abroad, and its application prospect in the valve rapid hydraulic drive device is broad.

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