Note: 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.
注:建议流阀前安装一个过滤,止由于止阀总成受到污染而导致这种阀门再增压期间产生泄漏或溢出。
Note: 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.
注:建议流阀前安装一个过滤,止由于止阀总成受到污染而导致这种阀门再增压期间产生泄漏或溢出。
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