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H72H-16P管道防止回流用H72H-16P对夹升降式立式止回阀
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H42W-25P弱腐蚀介质H42W-25P法兰立式止回阀
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HQ45X-10P水用球形止回阀HQ45X-10P
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DHH44-10P水类DHH44-10P微阻缓闭消声止回阀
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H72X-16T水用H72X-16T黄铜对夹消声止回阀
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H41X-10P耐疲劳、寿命长H41X-10P节能消声止回阀
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H41X-16PH41X-16P节能消声止回阀
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面议
YL空排止回阀
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H42W-10P弱腐蚀介质立式止回阀H42W-10P
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DH44Y-16P法兰低温旋启式不锈钢止回阀DH44Y-16P
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H64Y-16P适用于水、油品、蒸汽H64Y-16P磅级（美标）电站旋启式止回阀
面议