FISHER控制阀ET系列描述
Fisher ET, EAT, and ETR general-purpose control valves (figures 2, 3, and 4) are used for throttling or on-off control of a wide variety of liquids and gases. All three valve designs have single ports, balanced valve plugs, and cage guiding. Metal-to-PTFE seating for stringent shutoff requirements is standard in all valves except those with Cavitrol III cages. Metal-to-metal seating for higher temperatures is standard for valves with Cavitrol III cages and optional for all other valves.
The temperature limits of ET valves can be extended above 232C (450F) by using PEEK (PolyEtherEtherKetone) anti-extrusion rings in combination with a spring-loaded PTFE seal. The PEEK anti-extrusion rings expand to close off the clearance gap between the plug and the cage where the PTFE seal may extrude at high temperatures and pressures. The temperature limits are extended to 316C (600F) for non-oxidizing service and to 260C (500F) for oxidizing service.
Fisher ET、EAT 和 ETR 通用控制阀(图 2、3 和 4)用于对各种液体和气体进行节流或开关控制。 所有三种阀门设计均具有单端口、平衡阀芯和阀笼导向。 除带有 Cavitrol III 阀笼的阀门外,所有阀门均标配满足严格关断要求的金属-PTFE 阀座。 适用于较高温度的金属对金属阀座是带有 Cavitrol III 阀笼的阀门的标准配置,也是所有其他阀门的可选配置。
通过使用 PEEK(聚醚醚酮)抗挤压环与弹簧加载的 PTFE 密封件相结合,ET 阀门的温度限制可以扩展到 232C (450F) 以上。 PEEK 防挤压环膨胀以封闭阀塞和保持架之间的间隙,PTFE 密封件在高温和高压下可能会在该间隙中挤压。 对于非氧化工况,温度限制扩展至 316C (600F),对于氧化工况,温度限制扩展至 260C (500F)。
FISHER阀其他常见型号:
FISHER 8" ET CL600
FISHER Flow Controllers NEW + ORIGINAL+ ONE YEAR WARRANTY
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FISHER阀ET系列8" ET CL600参数描述