AWWA C515 暗杆软密封闸阀 FIG.3648/3649
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AWWA C509 暗杆软密封闸阀 FIG.3226
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AWWA C509 暗杆软密封闸阀 FIG.3226
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暗杆软密封闸阀 FIG.3243 3283 3286 3246
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可伸缩式延长杆
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DIN 3352 暗杆软密封闸阀 FIG.3276
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