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原文
Self-operated temperature control valve works YZW type of self-operated temperature control valve use the automatic adjustment of the principle of liquid thermal expansion of liquid incompressible Expansion of the liquid within the temperature sensor is uniform, controlling for the proportion of adjustment. Charged with a medium temperature, the sensor temperature liquid volume with the expansion or contraction. Charged with the medium temperature is higher than the set value, the temperature of liquid expansion, to promote the spool down to close the valve, reduce the heat medium flow; charged with the medium temperature below the set value, the temperature of liquid contraction, reset spring to push the spool open, increase the flow of the heat medium.
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译文：
自力式温控阀工作原理　YZW型自力式温控阀利用液体受热膨胀及液体不可压缩的原理实现自动调节。温度传感器内的液体膨胀是均匀的，其控制作用为比例调节。被控介质温度变化时，传感器内的感温液体体积随着膨胀或收缩。被控介质温度高于设定值时，温度液体膨胀，推动阀芯向下关闭阀门，减少热媒的流量；被控介质的温度低于设定值时，感温液体收缩，复位弹簧推动阀芯开启，增加热媒的流量。

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