Meanwhile, the flap valve can be used to adjust weight, spring tension and the bottom outlet valve flap valveopening 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。
2
The relationship between delay time of the boiler response, the openingtime of the valve and the flow through the valve for an actual boiler is obtained.
针对电厂一台实际锅炉，得出了锅炉水位动态响应的延迟时间与伐门开启时间，以及流过伐门流量之间的关系。
3
Calculation by theoretical analysis may ascertain the ideal rotate speed of variable-speed pump and ideal opening of regulating valve, completes adjust process at one time.