Valve control the flow can be divided into two:
A switch control: either full, or both, or either the maximum flow,minimum, no intermediate state, such as the general electromagnetic straight through valve, solenoid valve, electro-hydraulic valve.
Another is the control valve series: according to the demand to open any one opening, the size of the control flow through thevalve, manual control valve, such as saving, also has electronic control, such as proportional valves, servo valves.
Intention so use hydraulic proportion valve or servo valve is: tocontrol method to control the flow of savings (of course through thechange on the layout can also complete the pressure control), since it is saving control, it must be a loss of energy, servo valves and other valve is not the same, its energy loss greater some, because it needs must flow to keep operating hydraulic proportional valveprestage oil road.
Electromagnetic control hydraulic relief valve with protection to clarify:
Hydraulic pressure valve, pilot valve, hydraulic valve, one-way valve
Hydraulic solenoid valve, high pressure hydraulic valve, hydraulicpressure valve, pilot valve, hydraulic valve, one-way valve
Hydraulic fill oil valve is a hydraulic control one-way valve, adirection of flow stop, another free transfer, pilot control valve actionis by oil pressure hydraulic complete confession, which directly hit the hydraulic pressure valve, pilot valve, hydraulic valve, one-wayvalve
1, when the solenoid valve wiring loose or fall head, electromagnetic valve is not electricity, can be fastened thread.
2, avoid damp coil, resulting in less good insulation and magnetic flux leakage, prevent flood water from entering the solenoid valveand the coil burnt.
3, avoid the card valve mechanical impurities into or body corrosionattack.
4, the valve must be opened after the attack card clean by the hydraulic operation of professional staff, we must pay attention toinstallation position and wiring method of the parts.
5, solenoid valve to use level device, if it is the side mounted, arecapable of forming the valve closure lax, then cause leakage.