flexible seal butterfly valve to the user to acceptance considerations. Users of procurement in all of the valve to do sampling or testing is very necessary to do sampling on the quality of the product are: First, to ensure the quality of products, the second is to reduce unnecessary maintenance after installation and updating of the valve, a success rate of installation out. However, when a user seal butterfly sampling test, some do not pay attention to the place, causing the quality of the law can not you have suspected or unqualified rejection. The reason for the wrong? Screw on the pressure ring, respectively, according to bore size, 4, 6, 8 and 12, the bolt diameter of not more than M10. This is mainly a fixed number of screws used elastic seat, can not afford all the media pressure, when the valve is installed and then pipe flange bolts clamping effect on the outside only after all the media power to bear. Due to structural reasons, resulting in a difference operator acceptance testing leak, notify the manufacturers of the user to fail on the grounds is often the case, after the product smoothly through the communication clearance, but there is no problem in use. Therefore, in this matter should be noted that the next, for the user to better understand and use the flexible seal butterfly valve for the next exchange.
Flexible seal butterfly test, it will be upward pressure ring this side of the flat, placed in this plane and the flange of a park, the valve plate by basically the same size, if test press test, the pressure to claw pressure in the pressure plate, so that the pressure evenly distributed in the body side of the pressure ring. If the test is blind, generally flexible seal butterfly clip with two flanges are clamped on the folder to test, flange butterfly valve is sometimes flexible seal, the user only in the following order to facilitate the use of a flange bolts and the valve, then, the body above the screw on the pressure ring will bear the full brunt of the media, previously mentioned this point, these screws can not afford all the media pressure, so blind test with the valve does not leak, but also the state and the actual use of the same.
Some more frequently encountered during the installation problems, if we know the valve structure, it will give you the convenience of installation, and can correctly use the flexible seal butterfly valve.

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