【国标铸钢截止阀结构特点及用途】
1.全关时手轮按顺时针方向旋转；
When fully closed,the handwheel rotates clockwise.
2.可以安装在管道的任何位置上，介质从下往上流；
Able to be mounted on any bbbbbbbb of the pipeline,the medium flows from down to up.
3.不锈钢截止阀适用于各类腐蚀性介质的管道上，有良好的防腐性和足够的强度；
Stainless steel made stop valve is of good anti-corrosive property and enough strength and suitable for various pipelines with corrosive medium.
4.合金钢截止阀适用于耐高温的蒸汽、油品管道上，具有耐高温特点。
Alloy steel made stop valve features high-temperature resistance,suitable for high-temperature steam and oil goods pipelines.
【国标铸钢截止阀执行标准】
设计规范：GB/T 12235
结构长度：GB/T 12221
法兰连接：JB/T 79
试验与检验：JB/T 9002
产品标识：GB/T 12220
供货规范：JB/T 7928
【国标铸钢截止阀主要零部件材料】
| 产品类型Product classification | 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 |
| J41W-P型J941W-P型 | 铬镍钛钢Cr.Ni.Ti steel | 铬镍钛钢Cr.Ni.Ti steel | 铬镍钛钢Cr.Ni.Ti steel | 铬镍钛钢Cr.Ni.Ti steel | 铝青铜Albronze | 柔性石墨Flexible graphite | 不锈钢Stainless steel | 可锻铸铁Forgeable cast-iron |
| J41W-R型 | 铬镍钼钛钢Cr.Ni.Mo.Ti steel | 铬镍钼钛钢Cr.Ni.Mo.Ti steel | 铬镍钼钛钢Cr.Ni.Mo.Ti steel | 铬镍钼钛钢Cr.Ni.Mo.Ti steel | 铝青铜Albronze | 柔性石墨Flexible graphite | 不锈钢Stainless 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 |
【国标铸钢截止阀试验压力】
| 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 |
