Application If you want to actuate cylinder by two steps, you should use hydraulic sequence valve..
Function 1.        This valve is suitable for second circuit which must be low pressure and low flow rate. 2.        The active pressure of second circuit can be adjusted by an adjustable nut. 3.        Including one filter which is setting below 50 µm 4.        Non-leaking seal design’ 5.        Two mounting type-piping and manifolds