Solenoid valve and the structure of knowledge of the Selection Principle (a)

I: the applicability of



The fluid lines must be selected solenoid valve calibration model in the same medium.



Fluid temperature must be less than the selected temperature calibration solenoid valve.



Solenoid valve to allow liquid viscosity 20CST generally less than 20CST should be specified.



Working pressure, maximum pressure pipeline should be chosen in less than 0.04MPa as ZS, 2W, ZQDF, ZCM Series such as moving straight and direct step-by-step type; minimum working pressure can be selected when more than 0.04MPa Pilot - (pressure type) electromagnetic valve; maximum working pressure solenoid valve should be less than the maximum calibration pressure; generally are one-way solenoid valve, so pay attention to whether there is anti-pressure, if the installation of a non-return valve.



Fluid cleanliness is not high in the solenoid valve should be installed before the filter, the general electromagnetic



Valve cleanliness requirements of the media better.



Attention to flow and take over the aperture diameter; solenoid valve generally only two control switches; conditions permit, please install the bypass pipe, to facilitate maintenance; the phenomenon of water hammer when the solenoid valve to customize the opening and closing time to adjust.



Environmental temperature on the impact of the electromagnetic valve



And consumption of power supply current output capacity should be based on selection, the general allows the supply voltage of about ± 10%, it is important to start the exchange of high value when the VA.



Second, the reliability of



Normally closed solenoid valve is divided into two kinds of open and regular; general selection-type normally closed, power open, power closed; but in a very long time to open a very short time to close the normally open type of selection.



Life test, factories are generally the type of pilot projects, specifically in our country has not the professional standard of solenoid valve, solenoid valve manufacturers, therefore, when chosen carefully.



Moves a short period of time generally select high frequency straight type, the rapid series of large-caliber selection. 

  

  

 

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