| 品牌：Fisher | 型号：fisherET | 连接形式：法兰 |
| 驱动方式：气动 | 流动方向：单向 | 材质：碳钢 |
| 形态：隔膜式 | 公称通径：200 | 零部件及配件：执行器 |
| 外形：中型 | 标准：美标 | 压力环境：高压 |
| 工作温度：高温 | 类型(通道位置)：二通式 | 适用介质：各种高腐蚀化学介质 |
| 规格：美标 |
Compliance with the Clean Air Act鈥擡NVIRO-SEAL packing systems that provide an improved stem seal to help preventthe loss of process fluid are available. These packing systems feature PTFE orGraphite ULF packing with live-loading for reduced packing maintenance.
PTFE Seating for Long-Lasting ShutoffCapability鈥擟ontrolled compression of standard seat construction protects PTFEdisk between metal disk seat and disk retainer. Only the edge of the PTFE diskis contacted by the flowstream during normal operation. Excellent shutoff ismaintained by a backup ring or spring-loading that forces the valve plug sealring against the cage.
Valve Plug Stability鈥� Rugged cage guidingprovides high valve plug stability, which reduces vibration and mechanicalnoise.
Cost-Effective Operation and MaintenanceEconomy鈥擨ncreased wear resistance of hardened stainless steel trim meanslonger-lasting service. When inspection or maintenance is necessary, the bodycan stay in the pipeline during removal of trim parts. Balanced valve plugconstruction permits use of smaller, lower-cost Fisher actuators. The ETR valvealso permits easy body interior access without having to remove the bonnet oractuator. And, trim inventory costs are cut because dimensional standardizationpermits use of most standard easy-e trim parts.
Compliance with European Standards鈥� Valvesare available with dimensions specified by EN/DIN standards.
Sour Service Capability鈥擬aterials areavailable for applications handling sour service.
