常闭型软阀座，主体CAC406，螺栓连接, 软圆盘（垫圈类O形圈），内部材质：C3604，C6191
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| 交流普通 | 直流普通 | 交流防爆 | 直流防爆 |
| 螺纹连接 | M30C-15-A44-BS11-TF | M30C-15-D44-BS11-TF | M30C-15-AE44-BS11 | M30C-15-DE44-BS11 |
| M30C-20-A44-BS11-TF | M30C-20-D44-BS11-TF | M30C-20-AE44-BS11 | M30C-20-DE44-BS11 | |
| M30C-25-A44-BS11-TF | M30C-25-D44-BS11-TF | M30C-25-AE44-BS11 | M30C-25-DE44-BS11 | |
| M30C-32-A44-BS11-TF | M30C-32-D44-BS11-TF | M30C-32-AE44-BS11 | M30C-32-DE44-BS11 | |
| 法兰连接 | M30C-15-A44-BF11-TF | M30C-15-D44-BF11-TF | M30C-15-AE44-BF11 | M30C-15-DE44-BF11 |
| M30C-20-A44-BF11-TF | M30C-20-D44-BF11-TF | M30C-20-AE44-BF11 | M30C-20-DE44-BF11 | |
| M30C-25-A44-BF11-TF | M30C-25-D44-BF11-TF | M30C-25-AE44-BF11 | M30C-25-DE44-BF11 | |
| M30C-32-A44-BF11-TF | M30C-32-D44-BF11-TF | M30C-32-AE44-BF11 | M30C-32-DE44-BF11 | |
| M30C-40-A44-BF11-TF | M30C-40-D44-BF11-TF | M30C-40-AE44-BF11 | M30C-40-DE44-BF11 | |
| M30C-50-A44-BF11-TF | M30C-50-D44-BF11-TF | M30C-50-AE44-BF11 | M30C-50-DE44-BF11 |
