A strainer is recommended to be installed ahead of the backflow preventer to prevent the fouling of the check assembly and resulting spillage from the valve during repressurization.
建议在
阀前安装一个
滤器，止由于止阀总成受到污染而导致这种阀门在再增压
间产生泄漏或溢出。
A strainer is recommended to be installed ahead of the backflow preventer to prevent the fouling of the check assembly and resulting spillage from the valve during repressurization.
建议在阀前安装一个滤器，止由于止阀总成受到污染而导致这种阀门在再增压间产生泄漏或溢出。
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