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.
建议在防回流阀前安装一个过滤器，防止由于止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。
Backflow preventer
英语例句库
英语百科
Backflow prevention device
（重定向自Backflow preventer）
A backflow prevention device is used to protect potable water supplies from contamination or pollution due to backflow.
In water supply systems, water is normally maintained at a significant pressure to enable water to flow from the tap, shower, or other fixture. Water pressure may fail or be reduced when a water main bursts, pipes freeze, or there is unexpectedly high demand on the water system (for example, when several fire hydrants are opened). Reduced pressure in the pipe may allow contaminated water from the soil, from storage, or from other sources to be drawn up into the system.
- swingy的意思
- swingy的意思
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