The opening degree of the thermo-mechanic expanding valve is controlled by the over-heating degree of the refrigerant at the outlet of the evaporator.
热力膨胀阀的开度受控于蒸发器出口的制冷剂过热度，通过开度的调节，达到调节蒸发压力和控制制冷剂过热度的作用；
By applying black box theory inlet pressure, inlet subcooling, outlet pressure and valve opening are selected as influence factors to flow coefficient of electronic expansion valve (EEV).
根据黑箱理论提出将阀前压力、阀前过冷度、阀后压力和膨胀阀流通面积作为膨胀阀流量系数的影响参数。
In the steady state, the control room water, drainage same, the main valve opening constant outlet pressure stability.
在稳定状态下，控制室进水、排水相同，主阀开度不变，出口压力稳定。
It can be concluded that cavitation of hydraulic cartridge cone valve is reduced by increasing the opening stroke and the outlet pressure and changing the geometrical structure of valve spool.
研究表明：增大阀口开度，增大出口压力，并对阀芯结构进行修改后，插装型液压锥阀阀口气穴现象均可有效减弱。
Meanwhile, the flap valve can be used to adjust weight, spring tension and the bottom outlet valve flap valve opening size to determine the pressure and open and close time.
同时，可以利用调整阀瓣的自重、弹簧的弹力以及阀瓣的底孔大小来确定阀门的开启压力和启闭时间。
Therefore, it is suggested that the outlet valve opening of pH metering box and the time of each reclaiming link be adjusted.
为此提出了解决办法——调整酸碱计量箱出口阀开度及阴、阳床再生各步骤时间。
Therefore, it is suggested that the outlet valve opening of pH metering box and the time of each reclaiming link be adjusted.
为此提出了解决办法——调整酸碱计量箱出口阀开度及阴、阳床再生各步骤时间。
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