HSDCV60EM Series directional control valve

HSDCV60EM series multi-way directional control valve is an integrated directional control valve used in hydraulic systems to control the flow direction and pressure unloading of hydraulic oil. Its specific parameters need to be obtained through the manufacturer or authorized agents. The following are the relevant technical background and selection recommendations.：
1. Technical background
Definition of multi-way reversing valve
Multi-way directional control valve is a hydraulic component with more than two directional control valves as the main body, integrated with check valve, relief valve, oil replenishment valve and other functions, which can realize the communication, cutting, reversing and pressure unloading of hydraulic oil flow.
Typical structure
Integral type: Spool valve and valve components are integrated in a single valve body, with compact structure and small pressure loss, but high casting accuracy requirements.
Sharding type: it is assembled from the oil inlet joint, the working joint, and the tail joint. It has strong versatility, but there is a risk of leakage between the pieces.
Oil circuit connection method
Parallel type: Each joint valve operates independently, and the pressure oil from the oil inlet directly passes to the oil inlet chamber of each joint.
Series type: The oil return channel of the previous valve is connected to the oil inlet chamber of the latter valve, and the system pressure superposition conditions must be met.
Sequence type: When a certain valve is reversing, cut off the oil inlet channel of the subsequent valve to achieve the interlocking function.
Composite type: combine the above connection methods to adapt to the needs of complex hydraulic systems.

2. Selection suggestions
Key parameter matching
Rated pressure: It needs to be selected according to the maximum working pressure of the system, such as 31.5MPa or 35MPa specifications commonly used in construction machinery.
Rated flow rate: It is necessary to meet the operating speed requirements of the actuator. For example, the flow rate of the DCV60 series is 50-60L/min, and the DCV100 series can reach 80-100L/min.
Control method: choose manual, hydraulic control, electro-hydraulic proportional control or electro-hydraulic switch control according to the degree of automation.
Application scenario adaptation
Construction machinery: For equipment that requires synchronous control of multiple actions, such as cranes and loaders, load-sensitive multi-way valves are preferred to reduce energy consumption.
Industrial automation: For scenarios such as injection molding machines, hot and cold rolling mills, etc. that require high-precision position/speed control, it is recommended to choose an electro-hydraulic proportional valve with electrical position feedback.
Harsh working conditions: mining, metallurgy and other industries need to choose a valve body structure with strong pollution resistance and high pressure resistance (such as integral type).
Supplier screening
Domestic manufacturers: such as Yuci Hydraulic Parts Factory, Beijing Acer Shida, etc., can provide customized split multi-way valves with obvious price advantages.
International brands: such as Bucher and HAWE in Germany, the products are known for their high precision and long life, but the prices are higher.

3. precautions
Leakage control: The amount of internal leakage is too large to reduce the efficiency of the system. It is necessary to choose a product with a reliable sealing design (such as a wet solenoid valve core).
Reversing frequency: The reversing frequency of solenoid valves generally does not exceed 60 times/min. High-frequency sound valves (such as HD-4WRTE10 series) need to be selected for high-frequency working conditions.
Convenience of maintenance: The integral valve body needs to be replaced as a whole when it fails, and the fragmented valve body can be replaced separately with the faulty valve, which has lower maintenance costs..