Valve is not like a manual valve, the installation is very few to go after management, maintenance, it must be diligent maintenance in order to ensure normal operation and long service life. Below we propose eight ways to extend the service life of the regulator. 1) a good job to open the valve so that the maximum opening at the beginning of the work, such as 80%. In this way, cavitation, erosion and other damage occurred in the spool head. With the destruction of the valve, the flow increases, the corresponding valve and then off, so constantly damaged, and gradually closed, so that the entire valve fully utilize until the valve core and sealing surface damage, can not be used so far. At the same time, the opening of large opening throttle gap, erosion weakened, which than the beginning of the valve in the middle of the opening and a small opening work to improve life expectancy of 1 to 5 times. Such as a chemical plant using this method, valve life increased by 2 times. 2) to reduce the S to increase the work to reduce the S, that is, increase the system in addition to the loss of control valve to reduce the pressure drop assigned to the valve, in order to ensure that the flow through the control valve will inevitably increase the control valve opening, At the same time, reduce the pressure drop on the valve, so that cavitation, erosion also weakened. The specific measures are: set the orifice throttling valve after the valve, consumption pressure drop; close the pipeline in series on the manual valve to the control valve to obtain a more ideal job opening so far. The valve at the beginning of a large opening in the small work, the use of this method is very simple, convenient and effective. 3) to narrow the opening to increase the work by reducing the diameter of the valve to increase the work of the opening, the specific methods are: â‘ for a smaller size of the valve, such as DN32 into DN25; â‘¡ body does not change, Replace valve seat with small seat diameter. As an overhaul of a chemical plant will be djl parts dgl0 replacement, life expectancy increased by 1 times. 4) Transfer the damaged position to the secondary position where the damage is serious, so as to protect the valve seat sealing face and throttle face. 5) Increase the throttle channel The easiest way to increase the throttle channel is to thicken the valve seat to increase the valve seat hole to form a longer throttle channel. On the one hand, it can delay the sudden expansion of the flow-closure type after the throttle, delay the transfer and destroy the position and keep it away from the sealing surface; on the other hand, increase the throttling resistance and reduce the recovery of the pressure, Erosion diminished. Some of the valve seat hole designed to step, wave-type, is to increase the resistance, weaken the cavitation. This method is often used when introducing high-pressure valves in devices and improving older valves and is also very effective. 6) to change the direction of the flow of open-type toward the open direction, cavitation, erosion mainly in the sealing surface, so that the valve core and valve seat sealing surface quickly suffered damage; flow closed toward the closure of the flow, cavitation , Erosion effect after throttling, valve seat sealing surface below, protecting the sealing surface and the valve root, extending the life. Used as open-flow valve, when the problem of extending life expectancy is more prominent, just change the flow direction can extend the life of 1 to 2 times. 7) Switch to special materials for anti-cavitation (damage to the shape of honeycomb dots) and erosion (streamlined small groove), can be replaced with cavitation erosion and erosion of special materials to create throttling pieces. This special materials are 6YC-1, A4 steel, Secretary too Lai, cemented carbide. For anti-corrosion, can use more corrosion-resistant, and have certain mechanical properties, physical properties of the material. This material is divided into two types of non-metallic materials (such as rubber, PTFE, ceramics, etc.) and metal materials (such as Monel, Hastelloy, etc.). 8) change the valve structure to change the valve structure or choose to have a longer life of the valve approach to achieve the purpose of improving life expectancy, such as the use of multi-stage buck valve, anti-cavitation valve, corrosion-resistant valve.
E Bike/Electric Dimensions
If you purchase a power assisted Electric Bicycle, the bicycle shop owner will definitely recommend a suitable size for you based on your height and configuration preferences. What size of electric scooter to choose? Height is an unavoidable factor. Although the saddle can be adjusted up and down, it depends on the size of the frame to a certain extent. In most cases, E Bike Shops will have a size that suits you. If you have special requirements for the size of Electric Bicycles, you can also submit your requirements to the bicycle shop owner. There are generally two sizes of bicycles in our home, one is suitable for 15 inches in height ranging from 160cm to 170cm, and the other is suitable for heights above 175cm. In addition to height, there are certain requirements for choosing a Lithium Battery Electric Bike based on the weight of the rider. You can communicate with the bicycle shop owner carefully according to your actual situation.The bicycle shop owner will definitely give you appropriate purchasing suggestions.
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