The check valve is a valve that automatically opens and closes the valve flap, and is used to prevent the back flow of the medium depending on the flow of the medium itself. It is also called a check valve, a one-way valve, a backflow valve, and a back pressure valve. The check valve is an automatic valve whose main function is to prevent the reverse flow of the medium, prevent the reverse rotation of the pump and the drive motor, and release the medium of the container.
When the valve is in use, there will always be inevitable problems. As a professional fluid control manufacturer, Asaid Valve provides some solutions for problems that may arise in the course of use for your reference.
The valve flap breaks down with the media. Caused by the valve flap is broken because the media pressure before and after the check valve is in a state of nearly balance and each other "saw" state, the valve flap often flapping with the valve seat, made of some brittle material flap will be broken, so in the election When buying, you must pay attention to the toughness check valve. The reason for the backflow of the medium is mostly the destruction of the sealing surface, which entraps the impurities, so attention should be paid to the repair of the sealing surface and the removal of impurities when using the medium.
Lifting check valve is often encountered is the lifting of the valve plate is not working, can not play the role of cut off and open, this time depends first on the valve shaft and the guide sleeve on the drain hole is blocked, there is resistance phenomenon, Or is the production of the valve board to see the installation situation, sometimes improper installation will make the valve flap will be skewed. Then check the valve disc shaft and guide sleeve gap is too small, the valve flap shaft wear, jam, and the preloaded spring failure, for Preventive measures in this case must be promptly cleaned of the check valve. Do not use the medium with high viscosity and abrasive particles to inspect the quality of the parts. The installation or assembly should be correct. The valve cover should not be skewed at all times; The gap with the guide sleeve is moderate, and the influence of the temperature change and the invasion of the abrasive particles on the lifting and lowering of the valve flap should be taken into account; regular inspection and replacement are performed.
For swing-type check valve swing-type rocker mechanism is the most common damage, work in front of the check valve before the valve pressure close to or fluctuate, so that the valve flap repeated flapping damage to the valve and other parts of a major reason, and then there is Failure of the production parts, improper assembly of the rocker mechanism, resulting in falling off of the valve disc and loosening or wear and tear of the rocker, disc and mandrel connection after a period of time. Swing check valve work in order to effectively avoid the above problems, should be preventive measures: the operating pressure should be stable, the operating pressure is not stable conditions, should use cast steel valve and steel rocker; should check before use coloring seal Surface tightness; assembly should be firm, quality meet technical requirements, regular maintenance; manufacturing quality in line with technical requirements, regular inspections.
If you have other doubts or needs about fluid control products, we always welcome your inquiry
When the valve is in use, there will always be inevitable problems. As a professional fluid control manufacturer, Asaid Valve provides some solutions for problems that may arise in the course of use for your reference.
The valve flap breaks down with the media. Caused by the valve flap is broken because the media pressure before and after the check valve is in a state of nearly balance and each other "saw" state, the valve flap often flapping with the valve seat, made of some brittle material flap will be broken, so in the election When buying, you must pay attention to the toughness check valve. The reason for the backflow of the medium is mostly the destruction of the sealing surface, which entraps the impurities, so attention should be paid to the repair of the sealing surface and the removal of impurities when using the medium.
Lifting check valve is often encountered is the lifting of the valve plate is not working, can not play the role of cut off and open, this time depends first on the valve shaft and the guide sleeve on the drain hole is blocked, there is resistance phenomenon, Or is the production of the valve board to see the installation situation, sometimes improper installation will make the valve flap will be skewed. Then check the valve disc shaft and guide sleeve gap is too small, the valve flap shaft wear, jam, and the preloaded spring failure, for Preventive measures in this case must be promptly cleaned of the check valve. Do not use the medium with high viscosity and abrasive particles to inspect the quality of the parts. The installation or assembly should be correct. The valve cover should not be skewed at all times; The gap with the guide sleeve is moderate, and the influence of the temperature change and the invasion of the abrasive particles on the lifting and lowering of the valve flap should be taken into account; regular inspection and replacement are performed.
For swing-type check valve swing-type rocker mechanism is the most common damage, work in front of the check valve before the valve pressure close to or fluctuate, so that the valve flap repeated flapping damage to the valve and other parts of a major reason, and then there is Failure of the production parts, improper assembly of the rocker mechanism, resulting in falling off of the valve disc and loosening or wear and tear of the rocker, disc and mandrel connection after a period of time. Swing check valve work in order to effectively avoid the above problems, should be preventive measures: the operating pressure should be stable, the operating pressure is not stable conditions, should use cast steel valve and steel rocker; should check before use coloring seal Surface tightness; assembly should be firm, quality meet technical requirements, regular maintenance; manufacturing quality in line with technical requirements, regular inspections.
If you have other doubts or needs about fluid control products, we always welcome your inquiry
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