... 封堵能力 shut-off capacity 关闭塞 shut-off plug 模板的木板 shuttering boards ...
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The unique ram-style plug & seat provide reliable, tight shut off. All HST valves are covered by a 36 month prorated warranty.
独特的柱塞式设计，小巧、方便，所有止流阀均有36个月的保修期。
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