J21/23外螺纹针型阀主要件材料
件名称 Part name | 阀杆、阀盖 Stem, Bonnet | 阀杆、阀瓣 Stem, Disc | 填料 Packing |
| J21/3W-16P | 铬镍不锈钢 Cr,Ni Stainless steel | 铬镍不锈钢 Cr,Ni Stainless steel | 聚四氟乙稀、柔性石墨 PTEF,Soft graphite |
| J21/3W-160、J21/3W -40 | 优质碳钢 High grade carbon steel | 铬不锈钢 Cr,Stainless steel |
J21/23外螺纹针型阀主要性能规范
型号 Te | 公称压力（MPa） Nominal Pressure | 试验压力PS（MPa）Test pressure | 工作压力（MPa） Working Pressure | 工作温度(℃) Working Temperature | 适用介质 Suitable | ||
| 壳体 （MPa） Shell | 密封 （液） Seal | 密封 （气） Seal | |||||
| J21/3W -16 | 1.6 | 2.4 | 1.76 | 0.6 | 1.6 | P≤540℃ | 液化石油气水、 酸、蒸汽、油品等 Petroleum gas Water,Asic,Steam, Oil etc. |
| J21/3W 40P | 4.0 | 6.0 | 4.4 | 0.6 | 4.0 | ||
| J21/3W-160 | 16.0 | 24.0 | 17.6 | 0.6 | 16.0 | C≤425℃ | |
| J21/3W -320P | 32.0 | 48.0 | 35.2 | 0.6 | 32.0 | ||
J21/23外螺纹针型阀主要外型及连接尺寸
公称直径DN(mm) Nominal diameter | 尺寸 Dimensions | 重量(Kg) | ||||||
| Do | D1 | D2 | L | H1 | H2 | M | Weight | |
| 6 | 65 | 14 | 6 | 140 | 96 | 106 | 20×1.5 | 0.9 |
| 10 | 80 | 18 | 10 | 160 | 115 | 125 | 24×1.5 | 1.18 |
| 15 | 100 | 22 | 15 | 180 | 122 | 132 | 30×2 | 2.0 |
| 20 | 110 | 28 | 18 | 220 | 156 | 166 | 36×2 | 3.5 |
| 25 | 140 | 33 | 22 | 230 | 169 | 180 | 39×2 | 4.3 |
