This model is suitable for equipment of precision control and high cooperation like: 8-10T hydraulic excavator, telescopic arm fork loading, drilling machine, etc. With compact chip structure, which can be combined into the corresponding multi-way valve according to the needs of the main engine. It is also able to distribute flow during every reversing device without load pressure. The pressure of the system is limited by the LS relief valve, and the system is protected by the LS relief valve and the secondary relief valve . With compact chip structure, it can be combined into the corresponding multi-way valve according to the needs of the main engine. It is also able to distribute flow during every reversing device without load pressure. The pressure of the system is limited by the LS relief valve, and the system is protected by the LS relief valve and the secondary relief valve.