WSH Type High-Pressure Solenoid Directional Valve

WSH Type High-Pressure Solenoid Directional Valve

4 week ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 3 year year

Product details

DMSG Type Solenoid Directional Valve with Auxiliary Handle

1. Core Structure and Design

• Model Identification: The DMSG series represents the solenoid directional valve model code, where "D" denotes electromagnetic drive, "M" may indicate modular design, "S" likely refers to the auxiliary handle (Safety Handle), and "G" could signify high-pressure or specialized applications.

• Auxiliary Handle Function: In case of solenoid failure or emergencies, the valve can be manually operated via rotating/pushing the handle to directly switch the spool, enabling oil circuit reconfiguration for system safety. For instance, Ningbo Wanful Hydraulic Co., Ltd.'s DMSG valve explicitly features "auxiliary handle" for emergency manual operation.

• Material and Process: The valve body is crafted through resin sand mold forging and ultrasonic cleaning, utilizing stainless steel, copper, or cast iron. It offers corrosion resistance, high-temperature tolerance (-196°C to 650°C), and some models meet H-grade insulation (180°C endurance).

2. Technical Parameters and Performance

• Operating Pressure: Standard models support 1.0–50.0 MPa, with high-pressure variants reaching 31.5 MPa (e.g., Ningbo Leili Hydraulic's DMSG series). Industrial scenarios may require higher pressures.

• Flow Characteristics: Nominal flow rates range from 2.1 L/min (standard) to 1,200 L/min (e.g., Festo's JMFH series), adapting to diverse hydraulic system needs.

• Electrical Specifications: Compatible with AC/DC voltages (12V, 24V, 220V, etc.), with some models supporting AC/DC universal compatibility (RF). Coils feature high insulation grades (H-class) and pass 1,500V/min high-voltage tests.

• Installation Standards: Conforms to ISO 4401, CETOP, DIN 24340, and other international standards, ensuring multi-specification interchangeability and compatibility with ISO 5599-1 base standards.

3. Operating Principle

• Electromagnetic Drive: Upon energization, the solenoid engages to shift the spool, redirecting oil flow (e.g., P→A/B, A/B→T). De-energization triggers spring reset or manual operation via the auxiliary handle to restore valve position.

• Hydraulic Assistance: Some models integrate hydraulic directional valves, leveraging control oil pressure for large-flow switching. Electro-hydraulic valves (e.g., WEH, DSHG types) combine pilot valves and main valves to enhance response speed and control precision.

• Leak Prevention and Noise Reduction: Oil-immersed design minimizes spool-seal friction, while triple-welded white iron tubing reduces noise and residual magnetism interference. Ultrasonic cleaning ensures no foreign debris remains.

4. Application Scenarios

• Industrial Applications: Widely used in construction machinery (excavators, cranes), metallurgical equipment, marine hydraulic systems, precision machining (CNC machines), and robotic arms.

• Specialized Environments:

• High-Pressure Systems: Suitable for oil drilling and high-pressure waterjet cutting, often paired with WSH high-pressure solenoid valves.

• Explosion-Proof Requirements: ATEX-certified models for hazardous environments like coal mines and chemical plants.

• Precision Control: Combined with proportional or servo valves for accurate hydraulic cylinder/motor positioning and speed regulation.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

3 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box, hydraulic pump , hydraulic valve , hydraulic winch, hydraulic system

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