It's a key problem to choose and fix the control valve well and make it run in high level condition.
选择和安装好调节阀，使调节阀在一个高水平状态下运行将是一个很关键的问题。
The utility model relates to a pump valve of a well drilling mud pump.
本实用新型涉及钻井泥浆泵的泵阀。
The utility model relates to a pump valve of a well drilling mud pump.
本实用新型涉及钻井泥浆泵的泵阀。
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