The check valve comprises a resilient disc held in place and biased closed by the tensile stress of the check valve material.

该止回阀包括被止回阀材料的张应力保持到位并且偏压成被关闭的弹性圆盘。

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The check valve comprises a resilient disc held in place and biased closed by the tensile stress of the check valve material.

该止回阀包括被止回阀材料的张应力保持到位并且偏压成被关闭的弹性圆盘。

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