HSD Series directional control valve
HSD Series directional control valve: HSDCV60EM 、HSDW 、HSDSL 、HSDCV55
E-mail: hyd-sales2009@outlook.com
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.
Process steps：
Customer inquiry: Customers will make inquiries before placing an order to understand product details and communication needs.
Quotation: According to customer needs, provide a formal quotation, including the name, model, quantity, delivery time, payment method, etc. of the goods.
Order confirmation: After the customer confirms the quotation, a formal purchase order will be placed.
Confirm the delivery time: communicate the delivery time with the production department, inform the factory of the order details, and arrange the production plan.
Sign an export contract: After the two parties confirm that it is correct, sign an export contract to establish a trade relationship.
Implement the letter of credit (if applicable): If the payment method of the letter of credit is used, the customer needs to be urged to issue the certificate and review the contents of the letter of credit.
Export stocking: According to the requirements of the contract and the letter of credit, arrange production, purchase raw materials and packaging, and prepare the goods.
Chartering and booking: Contact the freight forwarder to make a booking and arrange the transportation of goods.
Export inspection: Apply to the quality inspection department for export commodity inspection and provide relevant documents.
Apply for a write-off slip: apply for a write-off slip from the foreign exchange management department for subsequent foreign exchange write-off.
Export declaration: Declare exports to the customs and provide documents such as power of attorney for customs declaration, customs declaration form for export goods, commercial invoice, packing list, etc.
