一、J21W外螺纹针型阀重要零件材料
| 零件名称Part name | 阀杆、阀盖Stem,Bonnet | 阀杆、阀瓣Stem,Disc | 填料Packing |
| J21W-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 |
| J21W-40、J23W-160 | 优质碳钢 High grade carbon steel | 铬不锈钢 Cr. Stainless steel |
二、J21W外螺纹针型阀重要性能规范：
| 型号 Type | 公称压力（MPa）Nominal pressure | 试验压力PS（MPa） Test pressure | 工作压力（MPa）Working pressuer | 工作温度（℃）Working temperature | 适用介质Applicable mediun | ||
| 壳体Shell | 密封（液）Seal | 密封（气）Seal | |||||
| J21W-16 | 1.6 | 2.4 | 1.76 | 0.6 | 1.6 | P≤200℃ | 液化石油气水、油品等Petroleun gas Water,Oil etc. |
| J21W-40P | 4.0 | 6.0 | 4.4 | 0.6 | 4.0 | ||
| J21W-160 | 16.0 | 17.6 | 17.6 | 0.6 | 16.0 | C≤425℃ | |
| J21W-320P | 32.0 | 48.0 | 35.2 | 0.6 | 32.0 | ||
三、J21W外螺纹针型阀重要形状及连接尺寸：
| 公称直径（mm）Nominal diameter | 尺 寸Dimensions | 重量（Kg）Weight | ||||||
| D0 | D1 | D2 | L | H1 | H2 | M | ||
| 6 | 70 | 14 | 6 | 135 | 96 | 106 | 20×1.5 | 0.8 |
| 10 | 80 | 18 | 10 | 156 | 115 | 125 | 24×1.5 | 1.1 |
| 15 | 100 | 22 | 15 | 180 | 122 | 132 | 30×2 | 2.0 |
| 20 | 110 | 28 | 18 | 185 | 156 | 166 | 36×2 | 3.0 |
| 25 | 140 | 33 | 22 | 185 | 169 | 180 | 42×2 | 3.2 |
