由于不锈钢蝶阀在管路中的压力损失比较大，大约是闸阀的三倍，因此在选择不锈钢蝶阀时，应充分考虑管路系统受压力损失的影响，还应考虑关闭时蝶板承受管道介质压力的坚固性。此外，还需要考虑在高温下弹性阀座材料所承受工作温度的限制。不锈钢蝶阀的结构长度和总体高度较小，开启和关闭速度快，且具有良好的流体控制特性，不锈钢蝶阀的结构原理适合制作大口径阀门。当要求不锈钢蝶阀作控制流量使用时，重要的是正确选择不锈钢蝶阀的尺寸和类型，使之能恰当地、有效地工作。通常，在节流、调节控制与泥浆介质中，要求结构长度短，启闭速度快(1/4转)。低压截止(压差小)，选用不锈钢蝶阀。
Because the pressure loss of the stainless steel butterfly valve in the pipeline is relatively large, about three times that of the gate valve, when selecting the stainless steel butterfly valve, the impact of the pressure loss on the pipeline system should be fully considered, and the robustness of the butterfly plate under the pressure of the pipeline medium should also be considered when closing. In addition, it is also necessary to consider the limit of the working temperature of the resilient seat material under high temperature. The structural length and overall height of stainless steel butterfly valve are small, the opening and closing speed is fast, and it has good fluid control characteristics. The structural principle of stainless steel butterfly valve is suitable for making large-diameter valves. When stainless steel butterfly valve is required to be used for flow control, it is important to correctly select the size and type of stainless steel butterfly valve so that it can work properly and effectively. Generally, in throttling, regulating control and mud medium, short structure length and fast opening and closing speed (1/4 turn) are required. Stainless steel butterfly valve is recommended for low pressure cut-off (low differential pressure).
在双位调节、缩口地通道、低噪声、有气穴和气化现象，向大气少量渗漏，具有磨蚀性介质时，可以选用不锈钢蝶阀。在特殊工况条件下节流调节，或要求密封严格，或磨损严重、低温(深冷)等工况条件下使用不锈钢蝶阀时，需使用特殊设计金属密封带调节装置地三偏心或双偏心地专用不锈钢蝶阀。中线不锈钢蝶阀适用于要求达到完全密封、气体试验泄漏为零、寿命要求较高、工作温度在-10℃～150℃的淡水、污水、海水、盐水、蒸汽、天然气、食品、药品、油品和各种酸碱及其他管路上。
Stainless steel butterfly valves can be used in the case of two-position regulation, necked channel, low noise, cavitation and gasification, small leakage to the atmosphere, and abrasive media. When the stainless steel butterfly valve is used under special working conditions, such as throttling adjustment, strict sealing, severe wear, low temperature (deep cold) and other working conditions, the special stainless steel butterfly valve with special design metal sealing belt adjustment device, three-eccentric or double-eccentric, shall be used. The center line stainless steel butterfly valve is applicable to fresh water, sewage, sea water, brine, steam, natural gas, food, medicine, oil, various acids and alkalis and other pipelines that require complete sealing, zero leakage in gas test, high service life, and operating temperature between - 10 ℃ and 150 ℃.

软密封偏心不锈钢蝶阀适用于通风除尘管路的双向启闭及调节，广泛用于冶金、轻工、电力、石油化工系统的煤气管道及水道等。金属对金属线密封双偏心不锈钢蝶阀适用于城市供热、供气、供水等煤气、油品、酸碱等管路，作为调节和节流装置。金属对金属面密封三偏心不锈钢蝶阀除作为大型变压吸附(PSA)气体分离装置程序控制阀使用外，还可广泛用于石油、石化、化工、冶金、电力等领域，是闸阀、截止阀的良好替代产品。
The soft seal eccentric stainless steel butterfly valve is applicable to the two-way opening and closing and adjustment of the ventilation and dust removal pipeline, and is widely used in the gas pipeline and water channel of metallurgy, light industry, electric power, petrochemical system, etc. The metal-to-metal line sealed double-eccentric stainless steel butterfly valve is applicable to urban heating, gas supply, water supply and other gas, oil, acid and alkali pipelines as a regulating and throttling device. In addition to being used as the program control valve of large pressure swing adsorption (PSA) gas separation device, metal-to-metal sealing tri-eccentric stainless steel butterfly valve can also be widely used in petroleum, petrochemical, chemical, metallurgy, power and other fields, and is a good substitute for gate valve and stop valve.
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The above is the detailed introduction of Lianggong Valve, which I hope will help you. If you have any questions, please contact us. We will provide you with our service http://www.jnlgvf.com