;
;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.
建议在防回流
前安装一个过滤器，防
由于回总成受到污
致这种门在再增压期间产生
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.
建议在防回流前安装一个过滤器，防由于回总成受到污致这种门在再增压期间产生或溢出。
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