| The liquefied gas valve is a forced-sealed valve, so when the valve is closed, pressure must be applied to the valve flap to force the sealing surface to leak. When the medium enters the valve from below the valve flap, the resistance to be overcome by the operating force is the friction force of the valve stem and the packing and the thrust generated by the pressure of the medium. The force of closing the valve is greater than the force of opening the valve, so the valve stem The diameter of the stem should be large, otherwise the valve stem can be bent. In addition to the above-mentioned faults, the liquefied gas valve usually has the following faults: 1, power does not move Cause analysis: Poor power supply wiring, power supply voltage variation is not allowed, coil short circuit or burnout. Treatment method: connect the power cord, adjust the voltage within the normal range, replace the coil 2. The fluid cannot pass when the valve is opened. Analysis of the cause: fluid pressure or working pressure difference does not match, fluid viscosity or temperature does not match, miscellaneous impurities are mixed around the valve core and moving iron core, the filter before the valve or the pilot valve hole is blocked, the working frequency is too high or the service life is up to period. Treatment method: adjust the pressure or working pressure difference or replace the suitable product, replace the suitable product, clean the inside, install the filter valve before the valve, clean the filter or pilot valve hole in time, re-select the product model or replace the new product. |
| The last valve knowledge: liquefied gas valve structure and working principle | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| The next valve knowledge: the failure of the gate valve and its elimination | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Our Special Intermediates are mainly a combination of our own actual product structure and product properties, including: 1. The product does not belong to any other product of our company intermediates, 2. Chemical reaction type is more special 3. Can be used to synthesize two or more kinds of API which roles is almost equivalent and difficult to separate the level. 4. This intermediate is somewhat less used for actual production or less practical use. We summarized the above four cases of intermediates temporarily as a special intermediate, if the special intermediate application is enlarge, we will adjust it according to the actual situation to change its "identity."
Special Intermediates
Special Intermediates,Tofisopam Intermediates,Amisulpride Intermediates,Antithrombotic/Blood thinners
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