HSD Series directional control valve

1. Technical characteristics
Structure：
Integral type: A single valve body may be used to integrate multiple reversing valve spool, which has a compact structure and is suitable for occasions where space is limited.
Split type: It may be made of multiple valve plates (or valve links) bolted together, which is easy to maintain and expand, and is suitable for large hydraulic systems.
Control method：
Manual control: directly operate the valve core through the handle or lever, which is suitable for low-frequency reversing scenarios.
Hydraulic control: The pilot oil pressure is used to push the valve core, which is suitable for high-pressure and large-flow systems.
Electro-hydraulic proportional/switch control: driven by an electromagnet or a proportional electromagnet, automatic control is realized.
Oil circuit connection method：
Parallel type: Each joint valve independently controls the actuator, which is suitable for single action or simple composite action.
Series type: The oil return of the previous valve is used as the oil inlet of the latter valve, which is suitable for scenarios where pressure superposition is required.
Composite type: combine the characteristics of parallel and series to realize complex action sequences.
Performance parameters：
Nominal pressure: may cover 16MPa~35MPa, suitable for medium and high pressure hydraulic systems.
Flow range: It may support 40L/min~250L/min to match the requirements of different actuators.
Leakage: The amount of internal leakage needs to be ≤ the standard value to ensure the efficiency of the system.

2.  the application field
Construction machinery：
Excavator: Control the composite action of the boom, bucket rod, and bucket.
Loader: Realize synchronous control of steering and lifting.
Crane: Control the actions of hoist, luffing, rotation, etc.
Industrial automation：
Injection molding machine: control the opening and closing of the mold, ejection and other actions.
Die casting machine: adjust the clamping force and injection speed.
Automated production line: control material transportation and fluid control between different workstations.
Agricultural machinery：
Combine harvester: control the lifting of the cutting table, the operation of the conveyor belt, etc.
Tractor: Realize the lifting and force adjustment of suspended agricultural tools.
Other fields：
Shipbuilding industry: Used in ship hydraulic systems, such as steering gear, anchor gear, etc.
Environmental protection field: used for fluid control in water treatment, sewage treatment and other processes.