Requirements: Valve must be tight against reverse flow under all pressure differentials.
要求：在所有压差下，阀门对于回流必须是密封的。
Filtration operation is in constant pressure differentials, called the constant pressure filter.
过滤操作是在恒定的压差下进行，称为恒压过滤。
It's rigid construction helps maintain more even pressure differentials keeping the filter from collapsing and shutting down your compressor.
这是僵硬的建设有利于保持甚至更差的压力使过滤器崩溃和关闭您的压缩机。
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