Balancing valve application and installation

As the name suggests, the balance valve is a valve used to maintain balance. It is special among all valves, because most of the other valves are used to control the flow direction and switch of the fluid, but the balance valve is used to maintain pressure balance. , so as to avoid errors caused by unbalanced pressure. Balance valve application 1. When the system operation adjustment adopts centralized quantity adjustment (such as the variable speed adjustment of the water pump, etc.), the balance valve and the self-operated differential pressure balance valve cannot be used. Because this adjustment is achieved by changing the water volume, the hydraulic working conditions of the system are changed during adjustment. Therefore, if a balance valve is used, some valves will be able to work normally, but the system flow is too large (exceeding the heat load at this time). Corresponding flow), some valves still cannot meet the flow requirements when they are fully opened, and some valves cannot work normally because the pressure difference between the two ends cannot reach the starting pressure difference, that is, the flow distribution is chaotic. Obviously, due to the existence of the balance valve, the centralized adjustment of the system cannot be realized. At this time, if a manual regulating valve is used, when the total flow of the system increases or decreases, the flow of each branch and each user can be increased or decreased in the same proportion, that is, the centralized adjustment of the system can be transmitted to each terminal device. 2. When the operation adjustment of the system is quality adjustment, balance valve and self-operated differential pressure balance valve can be used, because this adjustment method only changes the water supply temperature, and has nothing to do with the hydraulic working conditions of the system, that is, it does not change the hydraulic pressure of the system. Communicate the adjustment to each user and equipment under the conditions of the operating conditions. The balance valve can absorb the pressure fluctuation of the network and maintain the constant flow of the controlled load. The use of a balance valve can absorb pressure fluctuations in the network and overcome internal disturbances (changes in resistance inside the controlled loop) to maintain a constant differential pressure applied to the controlled loop. 3. When the system adopts the quality regulation of changing the flow in stages, although the flow in each stage remains unchanged. However, if a balance valve is used, the control flow or the control pressure difference must be set for each flow stage, which brings great inconvenience to the operation management, so it is not suitable for use. Installation 1), remove the protective cover on both sides of the flange end, rinse and clean with the valve fully opened. 2) Before installing the balancing valve with actuator, the whole machine should be tested according to the specified signal (electrical or gas) (to prevent the vibration caused by transportation from affecting the use performance). 3) Before preparing to connect with the pipeline, the remaining impurities in the pipeline must be rinsed and removed (these substances may damage the valve seat and ball core). 4) During installation, please do not use the actuator part of the valve as a lifting point to avoid damage to the actuator and accessories. 5) This type of valve should be installed in the horizontal or vertical direction of the pipeline. 6) The pipeline near the installation point should not be sagging or subjected to external force. Pipe supports or supports can be used to eliminate the deviation of the pipeline. 7) After connecting with the pipeline, please cross-lock the flange connecting bolts with the specified torque. The main features of the balance valve are its compact structure, reliable sealing and simple structure. The sealing surface and spherical surface are always in a closed state, which is not easy to be eroded by the medium, and is easy to operate and maintain. It is suitable for general working media such as water, solvent, acid and natural gas. It is also suitable for medium with harsh working conditions, such as oxygen, hydrogen peroxide, methane and ethylene, etc., and is widely used in various industries. The balance valve body can be integral or combined. The working principle of the balance valve: the balance valve only needs to use the operation of rotating 90 degrees and a small torque to connect or cut off the medium of the pipeline. The above is the introduction to the application and installation of the balance valve. If you have any questions, please come to Lianke Valve Co.,Ltd. for consultation. Lianke Valve Co.,Ltd. is a company dedicated to valve innovation and manufacturing. It strives to bring good valves to everyone, integrate them into everyone's life, and contribute to a better world.
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