LN81W/82W系列波纹管单座控制阀，基于LN81/82系列控制阀 结构上增加波纹管密封结构，耐压的弹性不锈钢波纹管置于支座部 件内与阀杆连接在一起,与填料组成双重密封，消除介质外漏隐患。 适用于剧毒、易燃、易爆、易挥发和稀有贵重金属介质的调节。
LN81W/82W series f based on LN81/82 series structures. Sealing bellows are increased. The pressure-proof and elastic stainless steel bellows is tightly seal-welded to the valve stem and upper adapter ring. For safety reasons the construction includes a standard stem sealing packing as back-up in case of bellows failure. LN81W/82W series are available for process fluids when stem leakage can't be tolerated at all(e.g. toxic fluids).
| 公称通径/Nominal Size | DN15~DN300 使用温度/Operating temperature -45°C~ + 350°C |
| 公称压力/Nominal Pressure | 美洲体系/American standard : PN20(ANSI 150),50(ANSI 300),110(ANSI 600); 欧洲体M/European standard : PN16,40,63 |
| 流量特 tt/Characteristic | 等百分比、线性、快开/ Equal percentage, Linear, On/off 可调比/Rangeability : 50:1 |
| 泄漏＞/Seat leakage | 符合GB/T17213.4-2005/IEC 60534-4:2006 IV级、V级，VI级(快开、软密封) Class IV,V, VI(on/off or soft seal) according to GB/T 17213.4-2005/IEC 60534-4:2006 |
| 公称通径 | DN15 ~ DN300 |
| 公称压力 | PN16/25/40/63/100;CL150(PN20)/300(PN50)/600(PN110 |
| 操作温度 | -46℃~ 350℃ |
| 流量特性 | 等百分比，线性，快开 |
| 可调比 | 30:1、50:1、 100:1 |
| 泄漏等级 | ANSI B16.104: IV、V、VI |
| 阀体材质 | WCB/WCC/LCB/LCC;WC6/WC9;CF8/CF8M;4A/5A等 |
| 阀内件材质 | 630/316/316+ST/316nitriding/316+Ni60/316+WC等 |
| 填料材质 | PTFE+石墨V形填料、柔性石墨环形填料、石墨+PTFE编织填料等 |
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