HSDM90 Directional control valves
HSSD series： HSSD4、HSSD5、HSSD6、HSSD8、HSSD11、HSSD14、HSSD15、HSSD18、HSSD25、HSSD8－1、HSSD8－2
E-mail: hyd-sales2009@outlook.com
Parameter Specification of HSDM90 Directional Control Valve
1. Model Interpretation
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HSDM: Series identifier, representing High-Speed Directional Modular valve, featuring compact modular structure, strong anti-pollution capability and wide applicability in industrial and mobile machinery;
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90: Specification code, indicating the nominal flow grade and main structural size of the valve, which determines the maximum flow capacity, port size and installation dimensions, serving as the core parameter for system matching.
2. Core Technical Parameters
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Parameter Name
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Specification
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Unit
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Valve Type
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4/3 Way Solenoid Directional Valve (Spring Centered + Manual Override)
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–
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Rated Operating Pressure
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21
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MPa (3050 psi)
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Maximum Pressure
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31.5
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MPa (4570 psi)
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Rated Flow
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160
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L/min
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Maximum Flow
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200
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L/min
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Control Mode
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Solenoid Electric Control + Manual Emergency Override
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–
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Solenoid Voltage
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DC 24V / AC 220V (Standard); DC 12V (Optional)
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V
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Port Size
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P/T: G 1 1/4; A/B: G 1
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–
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Neutral Function
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O-Type (All Ports Closed, Standard); Optional Y-Type / H-Type
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–
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Material
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Valve Body: Ductile Iron; Spool: Alloy Steel (Hardened & Ground); Seal: NBR (Standard); FKM (Optional for High Temperature)
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–
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3. Performance Parameters
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Response Time: ≤ 0.025 s (solenoid actuation), ensuring rapid and precise direction switching for executive components;
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Leakage Rate: ≤ 0.08 mL/min (under maximum pressure), minimal internal leakage to reduce energy loss and improve system efficiency;
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Pressure Loss: ≤ 0.25 MPa (at rated flow), low flow resistance to minimize power consumption of the hydraulic pump;
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Service Life: ≥ 150,000 commutation cycles, stable performance under long-term high-load operation;
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Flow Coefficient (Cv): 28, ensuring stable flow control within the full flow range with small flow fluctuation;
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Noise Level: ≤ 72 dB(A) (at 1800 r/min, no-load), low noise operation suitable for environments with strict noise requirements;
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Volumetric Efficiency: ≥ 98% (under rated conditions), ensuring high flow stability and control accuracy.
4. Installation & Working Conditions
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Mounting Type: Plate Mounting (ISO 4401 Standard) / Flange Mounting, compatible with standard hydraulic manifold installation dimensions, easy to assemble and maintain;
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Mounting Direction: Horizontal/Vertical Installation (preferred), no special orientation required, but ensure the spool moves freely without jamming;
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Working Medium: Hydraulic Oil (ISO VG 32/46/68 at 40℃), with oil cleanliness grade NAS 8 or higher to prevent spool and seal wear;
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Working Temperature: -15℃ ~ 85℃ (ambient temperature), recommended oil temperature control range: 25℃ ~ 60℃ for long-term stable operation;
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Vibration Resistance: Withstands vibration ≤ 10 g (5~2000 Hz), suitable for mobile machinery such as construction equipment;
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Installation Notes: The arrow on the valve body indicates the medium flow direction, which must be consistent with the actual pipeline; use high-pressure hydraulic hoses or seamless steel pipes to avoid vibration damage;
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Application Scope: Suitable for construction machinery (excavators, loaders), agricultural machinery (tractors, harvesters), industrial hydraulic stations, injection molding machines, and lifting equipment requiring high-precision direction control of hydraulic actuators.
5. Other Specifications
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Drive Power: Solenoid coil power ≤ 15 W (DC 24V), low power consumption to reduce system load;
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Weight: Approximately 18 kg (depending on port type and configuration);
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Design Standard: Complies with ISO 4401, GB/T 17485 and international hydraulic valve technical specifications, with high interchangeability of accessories;
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Maintenance: Routine inspection every 2000 working hours (check solenoid coil resistance and seal condition); replace seals every 8000 working hours; clean the spool every 10000 working hours to avoid jamming caused by impurities.
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.
