Rexroth the DA / DAW type 5X series pilot unloading valve 
 For backplane installation 
 2, for manifold mounting 
 Adjusting screw (3) with a scale 3, 4 kinds of control components ① knob ② with guard locking knob ④ Rotary knob with scale 
 4, four kinds of pressure range 
 5, the electromagnetic unloading valve 
 For the accumulator to help or unloading low-pressure pump in the high / low pressure pump system manipulation 
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