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Butterfly valve test and troubleshooting methods
First, the butterfly valve test and adjustment 1, butterfly valve products, whether manual, pneumatic, hydraulic, electric parts are strictly debug before leaving the factory, 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, butterfly valve products manufactured by the factory despite rigorous inspection and 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 fault and eliminate the 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 disc attached There are foreign bodies, not clean before the butterfly must not be closed, so as not to damage the ring. 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 require compression, that is, to ensure that the filler bees sex, 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. 9, the possible failure to eliminate the method as shown in the following table: Possible causes of the malfunction Elimination method Sealing surface leakage 1, disc, sealing surface folder debris 2, butterfly plate, sealing surface close position is not correct 3, the outlet side Configuration of flange bolts under uneven force or not according to the requirements of Figure 1 4, the pressure test direction is not required according to Figure 1, to eliminate impurities, cleaning the valve cavity 2, adjust the worm or electric actuator adjustment screw to close the valve The correct position 3, check the flange with the plane and the bolt pressure on the country should be evenly pressed 4, according to the direction of the tip seal pressure on both ends of the leak 1, both sides of the gasket failure 2, the flange tension is not Are not pressed 3, the seal, the next gasket failure 1, replace the gasket 2, the flange bolts (uniform force) 3, remove the valve pressure ring, replace the seal, failure pads Search Keyword: More Valve Technical Articles product offering information