美国派克液压阀,parker液压阀量程选择
⑵调速阀:在载荷压力变化时能保持节流阀的进出口压差为定值。
这样,在节流口面积调定以后,不论载荷压力如何变化,
调速阀都能保持通过节流阀的流量不变,从而使执行元件的运动速度稳定。
⑶分流阀:不论载荷大小,
能使同一油源的两个执行元件得到相等流量的为等量分流阀或同步阀;
得到按比例分配流量的为比例分流阀。⑷集流阀:作用与分流阀相反,
使流入集流阀的流量按比例分配。⑸分流集流阀:兼具分流阀和集流阀两种功能。
流速 (GPM)15, 30, 60, 120
流速 (lpm)57, 114, 227, 454
Z高环境温度 (F)-4° to + 122°
美国派克液压阀,parker液压阀量程选择
Z高环境温度 (C)-20° to +50°
容许电路泄漏5 DPM
过滤精度ISO 4406 (1999); 18/16/13 (meet NAS 1638:7)
先导压力比3:01
Z高流体温度 (F)-4° to +176°
The counterbalance valve operates as a pressure relief valve.
The setting pressure is lowered by the pressure in the inlet line.
To ensure safe load holding the setting pressure should be
approximay 30% higher than the maximum load pressure
Series CB Counterbalance valve controls the actuator movement with overrunning loads.
The return flow from the actuator is piloted and controlled by
the inlet flow to the actuator, ensuring a cavitation-free lowering load.
压力范围 (psi)1000 to 4000
压力范围 (bar)69 to 276
Z大工作压力 (psi)3000, 5000
Z大工作压力 (bar)207, 345