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LN83W/85W/87W系列波纹管单座控制阀，基于LN83/85/87系列控制阀单座压力平衡结构基础上增加波纹 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。适用于压差不大的剧毒、易燃、易爆、易挥发和稀有贵金属介质的调节。
LN83W/85W/87W series , based on LN83/85/87 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. LN83W/85W/87W series are available for process fluids when stem leakage can't be tolerated at all(e.g. toxic fluids).
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公称通径/Nominal Size |
DN40-DN400 使用温度/Ope rati ng temperature LN85* -17oC~+260°C |
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公称压力/Nominal Pressure |
美洲体体系/American standard : PN20(ANSI 150),50(ANSI 300),110(ANSI 600); 欧洲体系/European standard : PN 16,40,63 |
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流量特性/Characteristic |
等百分比、线性/ Equal percentage.Linear 可调比/Rangeability : 50:1 |
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泄漏量/Seat leakage |
符合GB/T 17213.4-2005/IEC 60534-4:2006 IV级，V级 Class IV V according to GB/T 17213.4-2005/IEC 60534-4:2006 |
| 公称通径 | DN15 ~ DN300 |
| 公称压力 | PN/160/250/CL900(PN150)/1500(PN260)/2500(PN420) |
| 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 |
柔性石墨环形填料、石墨+PTFE编织填料等 |
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