First, the test and adjustment 1, the product whether manual, pneumatic, hydraulic, electric components 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 butterfly valve, Pressure on the inlet side, in the export side to observe whether there is leakage, the strength test in the pipe before the plate should be opened to prevent damage to the sealing pair. 2, Although the products are strictly inspected and tested before leaving the factory, there are also some screwdrivers on the way of transportation. To readjust, pneumatic, hydraulic and so on, please read the instruction manual of the drive unit. 3, (electric transmission disc valve) has been the factory control mechanism 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 failure and elimination methods 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, does not allow the seals and disc with impurities attached Foreign bodies, never clean before closing the butterfly plate, 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, the number of open and close the butterfly valve more, 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 distribution flange, to prevent the backlog seals, 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 uneven or not according to the requirements of a map 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 Possible causes of failure to eliminate Leakage of sealing surface 1, butterfly plate, sealing surface with debris 2, disc, sealing surface close position is not correct 3, the outlet side of the installation of flange bolts uneven force or not according to Figure 1 Requirements 4, the pressure test direction according to the requirements of Figure 1 1, In addition to impurities, cleaning the valve cavity 2, adjust the worm or electric actuator adjustment screw to close the valve in the correct position 3, check the flange with the plane and the bolt pressure on the country should be uniform compression 4, according to the tip sealing direction The pressure on both ends of the valve leak 1, both sides of the gasket failure 2, the pipe flange uneven or not tight pressure 3, the sealing ring, the next gasket failure 1, the replacement gasket 2, compression method Blue bolts (uniform force) 3, remove the valve pressure ring, seal replacement, failure pads