SMC速度控制阀,SMC节流阀现货出售
SMC速度控制阀的选型的原则
1、 根据工艺条件，选择合适的结构形式和材料。
2、 根据工艺对象的特点，选择控制阀的流量特性。
3、 根据工艺操作参数，选择合适的控制阀口径尺寸。
4、 根据工艺过程的要求，选择所需要的辅助装置。
5、 合理选择执行机构。执行机构的响应速度应能满足工艺.
SMC速度控制阀的常见故障及排除
（一） 流量调节失灵
这是指调整节流调节部分，出油腔流量不发生变化，其主要原因是阀芯径向卡住和节流调节部分发生故障等。主要原因是锁紧装置松动，节流口部分堵塞，油温升高，进、出油腔最小压差过低和进、出油腔接反等。因此在使用时要注意进、出油腔的位置，避免接反[1] 。
减压阀芯或节流阀芯在全闭位置时，径向卡住会使出油腔没有流量，在全开位置（或节流口调整好）时，径向卡住会使调整节流调节部分出油腔流量不发生变化。
另外，当节流调节部分发生故障时，会使调节螺杆不能轴向移动，使出油腔流量也不发生变化。发生阀芯卡住或节流调节部分故障时，应进行清洗和修复。
（二） 流量不稳定
减压节流型调速阀当节流口调整好锁紧后，有时会出现流量不稳定现象，特别在最小稳定流量时更易发生。其主要原因是锁紧装置松动，节流口部分堵塞，油温升高，进、出油腔最小压差过低和进和出油腔接反等。
油流反向通过QF型调速阀时，减压阀对节流阀不起压力补偿作用，使调速阀变成节流阀。故当进、出油腔油液压力发生变化时，流经的流量就会发生变化，从而引起流量不稳定。
因此在使用时要注意进、出油腔的位置，避免接反。
（三） 内泄漏量增大
减压节流型调速阀节流口关闭时，是靠间隙密封，因此不可避免有一定的泄漏量，故它不能作为截止阀用。当密封面（减压阀芯、节流阀芯和单向阀芯密封面等）磨损过大后，会引起内泄漏量增加，使流量不稳定，特别会影响到最小稳定流量。
SMC速度控制阀,SMC节流阀现货出售
SMC AS2211-01-F08SK
SMC AS2211-02-F06S
SMC AS2211-02-F08S
SMC AS2211-02-F10S
SMC AS2211F-01-04S
SMC AS2211F0104S214
SMC AS2211F-01-04SA
SMC AS2211F-01-04SD
SMC AS2211F-01-04SJ
SMC AS2211F-01-04SK
SMC AS2211F-01-06
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SMC AS2211F-01-06S
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SMC AS2211F-02-06SD
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SMC AS2301F-02-10SN
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SMC AS2301F-U01-06
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SMC AS2311F-02-08SA
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SMC速度控制阀,SMC节流阀现货出售
