frame h hydraulic presses, hydraulic equipments
Ningbo Chap Mechan-Electro-Hydraulic S&T Development Co.,Ltd is specializing in production of Rubber machinery,Hydraulic Valves,Plastic machinery...
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Pilot-operated sequence valve
   YS pilot-operqated sequence valve is used to control action sequence  of an actuators in hydraulic systems so as to achieve atomatic control. By changing the control mode, it can be applied in a back pressure valve, an unload valve a bypass valve and a sequence valve. In addition, an internal supply internal discharge or an external supply internal discharge sequence valve can also be used as a balance valve if it includes a check valve.

Technical specification

Flow (l/min)
Hydraulic Fluid
Mineral Oil, Phosphate-ester
Viscosity (mm2/s)
Fluid Temp. ()
Work Pressure (MPa)
To 31.5 For Port A/B/X
Back Pressure (MPa)
To 31.5 For Port Y
Control Range (MPa)
0.3-21(Flow Related)

Model description       

Function symbol

Mounting dimensions

Plate size

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