Inlet valve and seat, due to open and close more frequently, the liquid flow rate is high, sealing will soon expire.
进液阀芯和阀座，由于开启关闭比较频繁，液体流速高，密封很快就会失效。
The water filling and pressure maintaining system mainly included: pressure pump and its control device, blockage end at the spiral case inlet, sealing ring on the stay ring of turbine, etc.
蜗壳内充水保压系统，主要包括加压水泵及其控制装置、蜗壳进口闷头、座环密封环等组成。
Poor sealing effects of temperature probe of scroll of bearing box at air inlet side of the air compressor results in oil contamination of following pipeline of air compressor.
由于空压机进气侧轴承箱蜗壳温度探头密封效果不好，使空压机及其后续管道受到油污染。
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