KQZD10-03S-X2 真空节流破坏阀,smc板材,smc气动原件,KQZD10-03S一级经...
- 品牌：日本SMC
- 型号：KQZD10-03S-X2
- 产地：日本
- 供应商：苏州伊洛自动化科技有限公司
- 供应商报价：面议
- 标签：真空节流破坏阀,smc板材,smc气动原件,KQZD10-03S一级经销商,原装进口,欢迎选购,317,苏州伊洛自动化科技有限公司
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真空节流破坏阀,smc板材,smc气动原件,KQZD10-03S一级经销商,原装进口,欢迎选购
真空破坏阀（Vacuum Breaker Valve）是一种安全阀。主要用于容器或管道中，在管道或容器因系统运行或停止而产生负压或真空逐步升高时，该阀能自动开启，破坏真空效应，使管道及其它设备不至产生瘪、凹裂等现象，以保护设备的安全。
发展历史*代气压式原始的气压式真空破坏阀由于需要专门的气源和直流设备，已逐步淘汰。
第二代电动式第二代的电动式真空破坏阀同水泵同通电，断电。一旦出现非事故的停电，此阀就能自动马上打开，破坏虹吸，截断水流，防止水流倒灌会产生主机的叶轮飞扬的事件。
此阀门关闭动力源是采用节能电磁铁，工作电源是采用220V，50Hz，其维护工作电压只要300毫安。能长时间工作，电磁铁的温升只要10K。开阀动力采用蓄能弹簧，能在2~5秒之间打开。还设有手动开阀、关阀的装置。人工操作方便、安全系数大。
但由于此阀耗电且一旦其电路发生故障即完全失效，所以也没有完全得到市场的认可。
第三代机械式第三代真空破坏阀为机械式结构。在系统形成真空时由大气压力直接顶开挡板往系统加气，迅速破坏真空，防止负压危害。0.2bar的密封压力保证了在系统正压时完全不渗漏。由于不需要耗电，使用寿命长，破真空及时而得到市场的一致欢迎。
真空节流破坏阀,smc板材,smc气动原件,KQZD10-03S一级经销商,原装进口,欢迎选购
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