Analysis of the backflow valve check valve causes and solutions

Check valve in the course of use, there will be a variety of faults, in general, the awareness of how much the composition of the valve parts, parts and more failures. The main reason for the backflow of the check valve medium is that the check mechanism is not working or damaged; the sealing surface is damaged, aged and the sealing surface is not closed for a long time, but the adhesion is dirty and can not be well sealed. Section Hong fluid after a long period of research found that the check valve media backflow troubleshooting mainly by the following: 1, regular cleaning, should not use the viscosity and abrasive particles containing more media, check the quality of parts processing 2, the installation or assembly should be correct , The valve cover should not be skewed in every 3, the valve shaft and the guide sleeve clearance is moderate, should consider the temperature changes and abrasive intrusion on the valve lift, regular inspection, regular maintenance and replacement 4, the correct selection of sealing surface material, regular Overhaul, regular replacement of rubber sealing surface; containing more impurities in the media, the valve should be set before the filter or sewage pipes. Good work in all aspects of the valve failure will be greatly reduced.