高温截止阀的启闭件是塞形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。高温截止阀只适用于全开和全关，不允许作调节和节流。高温截止阀广泛用于石油、化工、天然气、电站、冶金、国防科研等领域。
一、高温截止阀试验压力Test pressure
| 公称压力PN(MPa)Nominal pressure | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| 壳体强度试验Shell strength test | 2.4 | 3.8 | 6.0 | 9.6 | 15 | 24 |
| 上密封试验Back seal test | 1.8 | 2.8 | 4.4 | 7.0 | 11 | 18 |
| 密封试验Seal test | 1.8 | 2.8 | 4.4 | 7.0 | 11 | 18 |
二、高温截止阀使用范围Scope of use
| 类型Product classification | 适用介质Suitable medium | 适用温度（℃）Suitable temperature |
| J41(H.Y)-C型 | 水、蒸汽、油品Water,steam,oilgoods | ≤425℃ |
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| J41Y-I型 | 水、蒸汽、油品Water,steam,oilgoods | ≤550℃ |
三、高温截止阀主要零件材料：Material for main parts：
| 产品类型Product classification | 高温截止阀零件名称Part name | |||||||
| 阀体、阀盖Body bonnet | 阀杆Valve stem | 阀瓣Disc | 密封面Sealing face | 阀杆螺母Yoke nut | 填料Packing | 紧固件Fastener | 手轮Handwheel | |
| J41(H.Y)-C型 J941(H.Y)-C型 | 25、WCB | 铬不锈钢Cr.Stainless steel | 2Cr1325 | H:不锈钢Y:钴基硬质合金钢H:Stainless steelY:Co-based carbide alloy steel | 铝青铜Albronze | 柔性石墨Flexible graphite | 优质碳钢High-grade carbon steel | 可锻铸铁Forgeable cast-iron |
| J41Y-I型J941Y-I型 | 铬钼钢 Cr.Mo steel | 铬钼钢Cr.Mo steel | 合金钢Alloy steel | 钴基硬质合金钢C0-based carbide alloy steel | 铝青铜Albronze | 柔性石墨Flexible graphite | 合金钢Alloy steel | 可锻铸铁Forgeable cast-iron |
四、高温截止阀主要尺寸和重量：Main dimensions and weight：
| 公称通径DNNominal diameter | 主要外形尺寸和连接尺寸（mm）Main external and connecting dimensions | 重量（kg）Weight | ||||||||
| L | D | D1 | D2 | b | f | z-d | H | D0 | ||
| J41(H.Y.B)-16C J41Y-16I | ||||||||||
| 10 | 130 | 90 | 60 | 40 | 14 | 2 | 4-14 | 198 | 120 | 4.7 |
| 15 | 130 | 95 | 65 | 45 | 16 | 2 | 4-14 | 218 | 120 | 5.2 |
| 20 | 150 | 105 | 75 | 55 | 16 | 2 | 4-14 | 258 | 140 | 7.1 |
| 25 | 160 | 115 | 85 | 65 | 16 | 2 | 4-14 | 275 | 160 | 7.4 |
| 32 | 180 | 135 | 100 | 78 | 18 | 2 | 4-18 | 280 | 180 | 8.5 |
| 40 | 200 | 145 | 110 | 85 | 18 | 3 | 4-18 | 330 | 200 | 12.5 |
| 50 | 230 | 160 | 125 | 100 | 18 | 3 | 4-18 | 350 | 240 | 20 |
| 65 | 290 | 180 | 145 | 12 | 18 | 3 | 4-18 | 400 | 280 | 25 |
| 80 | 310 | 195 | 160 | 135 | 20 | 3 | 8-18 | 355 | 280 | 35 |
| 100 | 350 | 215 | 180 | 155 | 22 | 3 | 8-18 | 415 | 320 | 50 |
| 125 | 400 | 245 | 210 | 185 | 24 | 3 | 8-18 | 460 | 360 | 75 |
| 150 | 480 | 280 | 240 | 210 | 24 | 3 | 8-23 | 510 | 400 | 100 |
| 200 | 600 | 335 | 295 | 265 | 26 | 3 | 12-23 | 710 | 400 | 210 |
| 250 | 650 | 405 | 355 | 320 | 30 | 3 | 12-23 | 786 | 450 | 446 |
| 300 | 750 | 460 | 410 | 375 | 30 | 3 | 12-23 | 925 | 500 | 648 |
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