The transfer line should be equipped with a non-return valve or other suitable alternative.

转移管线上须配备止回阀之类的装置。

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Method 1: Change into a new non-return valve; prolong the holding time, if there is still no melt cushion, it means the cylinder is broken.

方法一：换上新的止回阀，延长保压时间依然没有料垫，则说明料筒损坏。

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Method 1: Change into a new non-return valve; prolong the holding time, if there is still no melt cushion, it means the cylinder is broken.

方法一：换上新的止回阀，延长保压时间依然没有料垫，则说明料筒损坏。

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