Priority valve XCMG Liugong motor grader spare parts
Priority valve
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description
Priority valve is a priority selection device that can give priority to ensuring sufficient pressure and flow required by the steering gear when the steering system is abnormal. It can be divided into static signal priority valve and dynamic signal priority valve by the difference of the steering system used. In fact, Although there are differences between these two types, they have the same function in ensuring the pressure and energy of the steering circuit. When the system load is different or the steering wheel speed changes, the flow rate required for the operation of the steering gear can be the first time to give priority to replenishment. The load-sensing full hydraulic steering gear and priority valve steering system are both under high pressure and low flow working conditions. On the basis of their merging into the working system, an additional high-pressure unloading part, which is a priority unloading valve, is added.
Product features of Priority valve
1. It can give priority to ensuring the flow requirements of the steering gear oil circuit, and its flow is basically not affected by changes in load pressure.
2. Except for the flow necessary for the normal operation of the steering gear, the remaining part of the output flow of the oil pump can be used by other working oil circuits, thereby eliminating the power loss caused by excessive oil supply and improving the system efficiency.
3. When the system is supplied by a load-sensing variable pump, the output flow and pressure of the oil pump can basically match the requirements of the load.
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