How to correctly use the valve, it is for the user must master the knowledge, only the correct use of its use is more long, so the hydraulic control valve center recommend valve must read the instruction manual before installation, strictly according to the instruction manual valve by the operation and maintenance, negligence and brute-force is a main reason for valve damage. As we know, most of the valve need maintenance workload is very few, this means that most valves often don't have to repair. And sometimes even a simple stem leakage such small problems, often because of negligence and into a big problem. What's more, some of the brute-force operators, not according to the requirements of technical specification for close the valve, bend a stem or close a seriously damaged. Such a situation. Stem nut and screw thread of the valve stem with place should be used lubricating oil regularly, such not only can reduce the friction between them, and can prolong the service life of them. This is a very important protective measures. If the wear stem nut still in use, then it may produce fracture, so all the axial force of the stem is not supported, the valve will not work. Gasket leaks, appear pure at the beginning of the last to the dangers of steam leakage. To avoid the danger, at the beginning of the leakage should be appropriate tighten valve cover bolts. If the valve seat sealing surface due to the improper material selection, began as a small leakage, leakage later may extend to groove, another open height is not enough, thus accelerating the eroding of the fluid, cause the seat completely damaged. Bending the reason may be due to the operator of the stem after close the valve, and excessive caused by rotating the handwheel. The Industrial Valves damage for various reasons. In fact, if a little training to operators, a similar situation could be avoided. Now several common valve is the use, maintenance and repair one by one. Globe valve is a kind of common block valves, are mainly used for connected or truncated medium pipeline. In the pipeline system, don't stop valve operation time is very few, for some, to regular maintenance. Small packing leakage, can use simple solution to tighten packing gland nut. But when the packing is damaged, must change the packing. Change the packing, must make the valve fully open, make the sealing work ( Generally it is possible to) under pressure 。 Replacement for packing oven proper packing, and tighten packing gland nut, even after regular inspection, to prevent the gland nut is loose. Replacing disc parts, to improve the valve stem, open the cover, and then the new gripped the rack installation disc, turn the valve stem, until the disc from the clamping frame off, replace with new disc and clamping frame, and load in the valve, replace the valve operation is convenient. In order to grinding disc ( Grinding update valve) , on the disc with a small number of abrasives, then, for grinding. Grinding method is in the disc nut groove and support the hole of the head placed on a shaft pin, put the component in the body, unscrew the connection, then grinding and reversing alternately. Using stem as a grinding tool, after in the abrasive grinding, grinding should not be too much. When finish grinding, abrasive to clean, lubrication and thread. The function of the check valve check valve is only allow fluid through one-way, to prevent the backflow medium. Is the most common urea device lift check valve, the disc along the center line of the channel for lifting movement, reliable action, but the fluid resistance is big, suitable for small and medium caliber. Lift check valve can be divided into straight-through type and vertical or Angle. Straight-through normally only lift check valve installed in a horizontal pipe, and the vertical lift check valve should be installed in vertical lines, commonly and medium flows from bottom to top, and the lifting Angle type check valve can only be installed in the vertical line. In more adjustment should pay special attention to when spring safety valve, because both users and manufacturers or repair shop all have no enough ability to accurately check the discharge pressure. Unless in the factory or the actual device for accurate adjustment, otherwise it is not allowed to make any adjustment spring safety valve.
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