DSV-G02-2C-A120-20 | 7OCEAN Solenoid Valve 350bar 110L/min NG6

Product Overview

The DSV-G02-2C-A120-20, DSV-G02-OBL, DSV-G02-2B-A220-10, and DSV-G03-8C-A220-20 are DSV series wet-type solenoid operated directional control valves from Taiwan-based 7OCEAN (SEVEN OCEAN HYDRAULICS). Established in 1989, Seven Ocean Hydraulics has over 30 years of experience in hydraulic valve manufacturing.

DSV-G02 Series (6 Size / NG6 / CETOP-3):

The DSV-G02 series corresponds to NG6 / CETOP-3 / NFPA-D03 mounting standards. This series delivers a maximum operating pressure of 350 bar (5000 PSI) and a maximum flow rate of 110 L/min (29 GPM) . The valve body is constructed from high-strength iron castings with wide internal passages to minimize pressure drop. The DSV series features conduit terminal box connection (G1/2 thread with standard indicating lights).

DSV-G03 Series (10 Size / NG10 / CETOP-5):

The DSV-G03-8C-A220-20 belongs to the DSV-G03 series—G03 size corresponds to NG10 / CETOP-5 / NFPA-D05 mounting standards. This series delivers a maximum operating pressure of 320 bar (4500 PSI) and a maximum flow rate of 160 L/min (42 GPM) .

Both series feature wet-armature solenoid design—internal moving parts operate submerged in hydraulic fluid. The products have passed 10 million cycle endurance testing for proven reliability.

Model Code Breakdown:

DSV-G02-2C-A120-20:

• DSV: Wet-type solenoid directional valve, conduit terminal box connection

• G02: G02 Size (6 size / NG6 / CETOP-3)

• 2C: 4-way, 3-position, spring centered (2C type)

• A120: Coil voltage AC120V (50/60Hz)

• 20: Design/configuration code

DSV-G02-OBL:

• DSV: Wet-type solenoid directional valve, conduit terminal box connection

• G02: G02 Size (6 size / NG6 / CETOP-3)

• OBL: Factory internal configuration code (Type O spool with detent/spring offset)

DSV-G02-2B-A220-10:

• DSV: Wet-type solenoid directional valve, conduit terminal box connection

• G02: G02 Size (6 size / NG6 / CETOP-3)

• 2B: 4-way, 2-position, spring offset

• A220: Coil voltage AC220V (50/60Hz)

• 10: Design/configuration code (10 Series)

DSV-G03-8C-A220-20:

• DSV: Wet-type solenoid directional valve, conduit terminal box connection

• G03: G03 Size (10 size / NG10 / CETOP-5)

• 8C: 4-way, 3-position, spring centered (8C type)

• A220: Coil voltage AC220V (50/60Hz)

• 20: Design/configuration code (20 Series)

Technical Specifications 

DSV-G02 Series (G02 / NG6 / CETOP-3) Common Specifications:

• Brand: 7OCEAN / SEVEN OCEAN HYDRAULICS

• Series: DSV-G02 Series

• Mounting Standard: NG6 / CETOP-3 / NFPA-D03

• Interface Type: ISO 4401-03

• Maximum Operating Pressure: 350 bar (5000 PSI) 

• Maximum Allowable Back Pressure: 220 bar (3190 PSI) 

• Maximum Flow Rate: 110 L/min (29 GPM) 

• Spool Position: 2-Position (Single Solenoid) or 3-Position (Double Solenoid)

• Spool Return Type: Spring Centered / Spring Offset / Detent

• Spool Styles: 12 types available

• Protection Class: IP65

• Solenoid Power Source: AC100/110/120/220/240V; DC12/24V

• Solenoid Type: Wet Armature (Oil-Immersed) 

• Electrical Connection: Conduit Terminal Box (G1/2 thread with indicating lights)

• Endurance Test: 10 million cycles

• Body Material: High-strength iron castings

DSV-G03 Series (G03 / NG10 / CETOP-5) Common Specifications:

• Brand: 7OCEAN / SEVEN OCEAN HYDRAULICS

• Series: DSV-G03 Series

• Mounting Standard: NG10 / CETOP-5 / NFPA-D05

• Interface Type: ISO 4401-05

• Maximum Operating Pressure: 320 bar (4500 PSI) 

• Maximum Allowable Back Pressure: 160 bar (2285 PSI) 

• Maximum Flow Rate: 160 L/min (42 GPM) 

• Spool Styles: 12 types available

• Protection Class: IP65

• Solenoid Power Source: AC100/110/120/220/240V; DC12/24V

• Solenoid Type: Wet Armature (Oil-Immersed) 

• Electrical Connection: Conduit Terminal Box (G1/2 thread with indicating lights)

• Endurance Test: 10 million cycles

• Body Material: High-strength iron castings

DSV-G02-2C-A120-20 Specifications:

• Model: DSV-G02-2C-A120-20

• Spool Configuration: 4-way, 3-position

• Spring Arrangement: Spring Centered

• Spool Type: 2C (closed center — all ports blocked)

• Coil Voltage: AC120V (50/60Hz)

• Electrical Connection: Conduit Terminal Box (G1/2 thread with indicating lights)

• Design Code: 20

• Weight: Approx. 1.7–2.0 kg

DSV-G02-OBL Specifications:

• Model: DSV-G02-OBL

• Spool Configuration: Dependent on OBL configuration

• Body Material: Cast Iron

• Connection Type: Subplate Mount

• Medium: Hydraulic Oil

• Actuation Type: Direct-Acting

DSV-G02-2B-A220-10 Specifications:

• Model: DSV-G02-2B-A220-10

• Spool Configuration: 4-way, 2-position

• Spring Arrangement: Spring Offset

• Spool Type: 2B

• Coil Voltage: AC220V (50/60Hz)

• Electrical Connection: Conduit Terminal Box (G1/2 thread with indicating lights)

• Design Code: 10

• Weight: Approx. 1.7–2.0 kg

DSV-G03-8C-A220-20 Specifications:

• Model: DSV-G03-8C-A220-20

• Spool Configuration: 4-way, 3-position

• Spring Arrangement: Spring Centered

• Spool Type: 8C (P blocked, A & B to T in neutral)

• Coil Voltage: AC220V (50/60Hz)

• Electrical Connection: Conduit Terminal Box (G1/2 thread with indicating lights)

• Design Code: 20

• Weight: Approx. 4.4 kg

Key Technical Advantages

1. Wet-Armature Solenoid Design for Quiet, Long-Life Operation

The DSV series features wet-armature solenoid design—internal moving parts operate fully submerged in hydraulic fluid. This design provides a cushioning effect that ensures smooth, quiet operation even under high-pressure, high-frequency switching. Solenoids are covered with BMC fireproof material for excellent insulation. Products have passed 10 million cycle endurance testing.

2. Optimized Spool Design for Reduced Flow Forces

Optimized spool design effectively reduces flow forces generated within the valve. The five-chamber valve body design withstands high pressure and high back pressure. High-strength iron castings with wide internal passages minimize pressure drop.

3. Built-in Surge Suppression and Manual Override

DSV series terminal box type features built-in surge suppression. All models are equipped with manual solenoid override for emergency directional control during power failure. Standard indicating lights enable quick field status checks.

4. Multiple Voltage Options and Flexible Spool Configurations

DSV series supports multiple voltage options including AC100/110/120/220/240V and DC12/24V. Offers 12 spool styles and 6 spring return configurations. The extensive configuration options flexibly accommodate different control systems and application requirements.

5. International Standard Compliance for High Installation Compatibility

DSV-G02 series mounting conforms to NG6 / CETOP-3 / NFPA-D03 standards. DSV-G03 series mounting conforms to NG10 / CETOP-5 / NFPA-D05 standards. Fully compatible with globally adopted interfaces for direct replacement of same-series, same-specification products. IP65 protection rating effectively resists dust and water ingress.

Application Areas

DSV-G02-2C-A120-20 (4-way, 3-position, spring centered, 6 size, AC120V):

• CNC Machine Tools — Directional control for machine tool hydraulic systems

• Injection Molding Machinery — Directional control for auxiliary functions

• General Industrial Hydraulic Systems — Standard 4-way, 3-position directional control

• Die-Casting Machines — Directional control for high-pressure casting equipment

DSV-G02-OBL (6 size, Type O spool):

• Fixture and Workholding Systems — Hydraulic control for workpiece clamping and release

• Industrial Automation Production Lines — Hydraulic actuator control for automated production lines

• General Industrial Hydraulic Systems — Directional control applications

DSV-G02-2B-A220-10 (4-way, 2-position, spring offset, 6 size):

• Hydraulic Power Units (HPU) — Directional control and flow switching

• Unloading Circuits — System unloading and pressure release control

• Safety Interlock Devices — Control circuits that automatically return to a safe state when de-energized

DSV-G03-8C-A220-20 (4-way, 3-position, spring centered, 10 size):

• Injection Molding Machinery — High-flow directional control for clamping, injection, and ejection cylinders

• Hydraulic Presses and Forging Equipment — High-flow directional control for presses and forming equipment

• Die-Casting Machines — High-flow directional control for high-pressure casting equipment

• Construction Machinery — High-flow hydraulic directional control for excavators, loaders, and mobile equipment

• Steel and Mining Equipment — High-flow directional control for rolling mills and heavy-duty systems

Expert Maintenance Tips

1. Installation Guidelines

• DSV-G02 series mounting must conform to NG6 / CETOP-3 / NFPA-D03 standards.

• DSV-G03 series mounting must conform to NG10 / CETOP-5 / NFPA-D05 standards.

• Thoroughly clean the mounting surface and all ports (P, A, B, T) before installation to prevent foreign particles from entering and causing spool sticking or seal damage.

• Tighten mounting bolts evenly to the specified torque to ensure proper sealing between the valve body and mounting surface.

• DSV series features conduit terminal box connection (G1/2 thread)—ensure the terminal box is properly sealed during installation.

2. Hydraulic Fluid Cleanliness

• Recommended fluids: ISO-standard anti-wear hydraulic oil.

• Install a return line filter with minimum 25 μm filtration rating upstream of the valve.

• Periodically check fluid cleanliness to prevent contaminants from entering the valve.

3. Electrical Connection Specifications

• DSV-G02-2C-A120-20 uses AC120V (50/60Hz) supply.

• DSV-G02-2B-A220-10 uses AC220V (50/60Hz) supply.

• DSV-G03-8C-A220-20 uses AC220V (50/60Hz) supply.

• Voltage for DSV-G02-OBL varies by configuration—verify coil nameplate voltage matches supply voltage before connection.

• DSV series features built-in surge suppression—pay attention to indicator light connections during wiring.

• Ensure the terminal box cover is properly sealed to maintain IP65 protection.

4. Operating Environment and Temperature Management

• Ambient temperature range: -15°C ~ +50°C .

• Fluid temperature range: -15°C ~ +60°C .

• Select appropriate viscosity hydraulic fluid when operating in extreme temperature conditions.

5. Spool Type Usage Considerations

• 2C type (4-way, 3-position, spring centered) : All ports blocked in neutral—actuator is locked when de-energized. Suitable for applications requiring precise actuator positioning and holding.

• 2B type (4-way, 2-position, spring offset) : Single solenoid operation with automatic spring return. Suitable for safety return control circuits.

• 8C type (4-way, 3-position, spring centered) : P blocked, A & B open to T in neutral—actuator floats freely in neutral. Suitable for applications requiring free actuator movement.

• OBL type: Spool function depends on OBL internal configuration—confirm with the complete model code.

6. Periodic Maintenance Inspection

• Inspect the valve body for external oil leakage every 2,000 operating hours or at least annually.

• Check terminal boxes for looseness, oxidation, or moisture ingress.

• Wet-armature solenoid coils can be replaced without disturbing hydraulic connections.

• If response lag or unstable shifting is observed, first check system fluid cleanliness and verify the spool is not sticking.

• Periodically test the manual override function to ensure emergency availability.