止回阀与蝶阀的连接是经常发生的事，通常需要在这两种阀门之间加上一节短短的阀槽。

Check valve and butterfly valve combinations are very popular; normally a short spool piece is required between the valves.

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工矿机电配件厂占地8亩，主要生产液压阀、磁性槽楔等，产品畅销。

The Factory covers an area of 8 mu. Its main products are series of hydraulic pressure valves, which has a very broad market.

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把电缆夹进阀盖上的电缆导槽。

Clip cable to cable guide at valve cover.

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