Selection criteria of hydraulic solenoid valve

How to choose the right and inexpensive hydraulic solenoid valve, tips are very important, below, Xiaobian on some of these skills to share with you.

Select the solenoid valve according to the dielectric parameters: material, temperature group

High temperature medium: medium temperature should be chosen within the solenoid valve promised. Such as hot water, steam, heat transfer oil to choose to use high temperature electromagnetic coil and sealing material varieties, but also to choose the piston type of structure. For example: 200 degrees C. OK72 steam or OK87 series stainless steel, copper is not good at choosing, because when the temperature is over 170 DEG C expansion coefficient of copper on the piston and solenoid valve components and piston cavity tolerance conflict, resulting in ineffective action.

Corrosive medium: should choose the plastic King solenoid valve and all stainless steel; for strong corrosive medium must choose isolated diaphragm type, such as: OK69. Neutral medium, copper alloy should be chosen as the valve shell material solenoid valve, otherwise, the valve shell often rust off, especially the action is not frequent occasions. Ammonia valve can not use copper products. The food grade stainless steel solenoid valve is used in the process of making liquor and milk.

Medium cleanliness: if the medium contains a small amount of impurities, optional diaphragm structure, but if the impurities are larger, more should be installed in front of the solenoid valve filter.

Medium viscosity: usually below 50cSt can be arbitrarily selected, if more than this value, you should choose a high viscosity solenoid valve.

Medium state: as large as gas, liquid or mixed state, in order to choose different varieties of solenoid valve, that is used for gas or liquid for different media, medium form to note, otherwise it is not conducive to the performance of the valve stability.

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