... adjusting valve cap nut 调整阀螺帽 adjusting valve spring seat 调整阀弹簧座 adjusting valve spring 调整阀弹簧 ...
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在不具备压力试验条件时，不允许拆掉换向阀的铅封和调整调压弹簧座。
In the lack of condition for the pressure test, it is not allowed to remove the lead sealing of the reversing valve to adjust the pressure regulating button.
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