| NKJ61H真空截止阀主要结构特点及用途: 1、主体采用铸锻结构，具有平行双密封副半强制双向密封，密封到位运动和楔形块楔紧运动分步作用实现零泄漏。
2、密封面运动磨擦力小、启闭轻便，而且密封面磨损有自动补偿功能。
3、结构简单、紧凑、检修方便，使用寿命长。
4、阀盖填料室设有真空密封结构，具有自胀压紧作用，并且密封采用高强膨胀材料密封，使系统与大气*隔离，具有很好的系统气密性。
5、连接形式分法兰、焊接两种，驱动方式有手动、电动两种。
该阀门适用于工作温度≤425℃和≤550℃，工作介质为水、蒸汽或空气的管路上，作为启闭装置；尤其适用于火电厂汽机冷凝和真空负压系统，起真空隔离密封作用。 阀门结构型式 Valve ctrucure type 
NKJ61主要性能规范 产品类型
Product type | 壳体强度试验/MPa
Sheli strangth test | 上密封试验/MPa
Back seal test | 密封试验/MPa
Seal test | 适用介质
Applicable
medium | 适用温度/℃
Applicable
temperature | | NKJ61H-40 | 6.O | 4.4 | 4.4 | 水、蒸汽、空气
Water、Steam、Air | ≤425 | | NKJ61H-64 | 96 | 7.O | 7.O | | NKJ61H-100 | 15.O | 11.0 | 11.O | | NKJ61Y-40l | 6.O | 4.4 | 4.4 | 水、蒸汽、空气
Water、Steam、Air | ≤550 | | NKJ61Y-64l | 9.6 | 7.0 | 7.O | | NKJ61Y-1OOI | 15.O | 11.O | 11.O | NKJ61H主要零件材料 Material for Main Parts 零件名称
Part name | 阀体、阀盖 Body Bonnet | 阀杆
Valve Stem | 阀瓣 Disc | 密封面
Sealing face | 阀杆螺母
Yokenut | 填料
Packing | 紧固件
Fasteher | | NKJ61H-C型 | 25或WCB | 铬不锈钢
Crstain
mless
teel | 铬不锈钢
Crstain
mless
steel | H：合金钢
H：alloy steel | 铝青铜
AI
bronze | 膨胀复合石墨
Expanding
compound
graphlte | 优质碳钢
High-grade
carbon
steel | | NKJ61Y-l型 | 铬钼钢
Cr.Mo steel | 20CrlM01vA 或38CrMoAlA | 12CrlMo 1VA | Y：硬质合金
Y:oarbide alloy | 铬钼钢
Cr.Mo steel | NKJ61H主要尺寸及重量 Main dimensions and weight 公称通径
DN/mm
Nominal
diameter | 公称压力
PN/MPa
Nominal
pressure | 主要外形尺寸和连接尺寸/mm
Main extemal and connectingd mensions | | L | H | D | D0 | D1 | L1 | α | W | | 1O | 4.0 | 130 | 245 | 36 | 11 | 18.4 | 1O | - | 120 | | 15 | 130 | 245 | 36 | 16 | 22.5 | 1O | - | 120 | | 20 | 150 | 265 | 44 | 21 | 28.5 | 11 | - | 160 | | 25 | 160 | 270 | 48 | 26 | 34.5 | 12 | - | 200 | | 32 | 180 | 285 | 48 | 34 | - | - | 37o30' | 200 | | 40 | 200 | 320 | 55 | 40 | - | - | 37o30' | 240 | | 50 | 230 | 365 | 64 | 48 | - | - | 37o30' | 320 | | 65 | 290 | 41O | 82 | 66 | - | - | 37o30' | 300 | | 80 | 31O | 430 | 95 | 78 | - | - | 37o30' | 300 | | 100 | 350 | 470 | 117 | 1OO | - | - | 37o30' | 350 | | 125 | 400 | 500 | 143 | 126 | - | - | 37o30' | 350 | | 150 | 480 | 533 | 167 | 150 | - | - | 37o30' | 400 | | 1O | 6.4 | 130 | 245 | 36 | 1O | 18.4 | 1O | - | 120 | | 15 | 130 | 245 | 36 | 15 | 22.5 | 1O | - | 120 | | 20 | 150 | 265 | 44 | 20 | 28.5 | 11 | - | 160 | | 25 | 160 | 270 | 48 | 25 | 34.5 | 12 | - | 200 | | 32 | 180 | 280 | 48 | 33 | - | - | 37o30' | 200 | | 40 | 200 | 320 | 55 | 39 | - | - | 37o30' | 240 | | 50 | 230 | 365 | 64 | 48 | - | - | 37o30' | 320 | | 65 | 290 | 41O | 82 | 65 | - | - | 37o30' | 320 | | 80 | 31O | 430 | 95 | 76 | - | - | 37o30' | 360 | | 100 | 350 | 470 | 117 | 98 | - | - | 37o30' | 400 | | 125 | 480 | 500 | 143 | 123 | - | - | 37o30' | 400 | | 150 | 480 | 533 | 167 | 148 | - | - | 37o30' | 500 | | 1O | 10.O | 130 | 245 | 36 | 1O | 18.4 | 1O | - | 120 | | 15 | 130 | 245 | 36 | 14 | 22.5 | 1O | - | 120 | | 20 | 150 | 265 | 44 | 20 | 28.5 | 11 | - | 160 | | 25 | 160 | 270 | 48 | 25 | 34.5 | 12 | - | 200 | | 32 | 180 | 285 | 48 | 32 | - | - | 37o30' | 200 | | 40 | 200 | 320 | 55 | 38 | - | - | 37o30' | 240 | | 50 | 230 | 355 | 64 | 48 | - | - | 37o30' | 320 | | 65 | 290 | 41O | 82 | 63 | - | - | 37o30' | 320 | | 80 | 31O | 430 | 95 | 74 | - | - | 37o30' | 360 | | 1OO | 350 | 470 | 117 | 97 | - | - | 37o30' | 400 | | 125 | 400 | 500 | 143 | 123 | - | - | 37o30' | 400 | | 150 | 480 | 533 | 167 | 148 | - | - | 37o30' | 500 | | 
