, 长
统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.
在防回流阀前安装一个过滤器，防
由于回阀总成受到污染而导致这种阀门在再增压期间产生泄漏或溢出。
器；防回流设施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.
在防回流阀前安装一个过滤器，防由于回阀总成受到污染而导致这种阀门在再增压期间产生泄漏或溢出。
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