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How to eliminate pneumatic butterfly valve common fault
First, the pneumatic butterfly valve test and adjustment 1, whether the butterfly valve manual, pneumatic, hydraulic, electric components in the factory are subject to rigorous testing, the user re-sealant performance, the import and export should be evenly fixed on both sides, close the plate Valve, the pressure on the inlet side, in the export side of the observation of the phenomenon of leakage before the pipe strength test, the plate should be opened to prevent damage to the seal pair. 2, although the pneumatic butterfly valve factory inspection and rigorous testing, but there are also individual products in the transit automatic screw displacement, the need to re-adjust, pneumatic, hydraulic, etc., please read the package drive manual. 3, electric drive disc valve factory control mechanism has been Kai, closed stroke adjusted. To prevent the power is turned on the wrong direction, the user first turn on the power, the first open manually to the semi-open position, press the electric switch to check the direction of the disc and valve closing direction can be consistent. Second, the common faults and elimination of pneumatic butterfly valve 1, the installation before the road to confirm the performance of our products and media flow arrow is consistent with the movement conditions, and plug the valve cavity clean, not allowed in the ring and butterfly plate attached There are foreign bodies, not clean before the butterfly must not be closed, so as not to damage the seal. 2, the flange plate supporting the installation of special disc flange recommended, that is HGJ54-91 socket welded steel flange. 3, installed in the pipeline location, the best position for the legislation, but can not flip. 4, the need to regulate the use of traffic, a worm gearbox control. 5, open, close the number of disc valve, in about two months time, open the worm gear box cover, check the butter is normal, should maintain the right amount of butter. 6, check the connection parts of the required compression, that is, to ensure the packing seal, but also to ensure flexible stem rotation. 7, metal seal butterfly valve products are not suitable for installation at the end of the pipeline, such as must be installed at the end of the pipeline, the need to take the export flange, to prevent the backlog seal, over. 8, the valve stem to install the use of regular inspection of the valve to check the effectiveness of the use, found that the failure to be ruled out in time.