Product Overview
The SV08-40-0-P-24DC, SV08-47A-0-N-00, SV08-47C-0-N, and SV08-47D-0-N are HydraForce SV08 series solenoid-operated screw-in hydraulic cartridge valves, Size 08, compatible with VC08-4 standard cavities. The SV08 series is HydraForce’s most representative solenoid cartridge valve product line, renowned for its compact design, high-pressure performance, and modular installation—widely used in mobile and industrial hydraulic systems. The valve body is constructed from steel with hardened working surfaces and zinc-plated exposed surfaces for superior corrosion resistance.
SV08-40-0-P-24DC:
The SV08-40-0-P-24DC is a 4-way, 2-position direct-acting spool-type solenoid cartridge valve. When de-energized, flow paths are port 3 to port 2, and port 4 to port 1. When energized, the spool shifts to open port 3 to port 4, and port 2 to port 1. All ports are open at cross-over. This model is ideal for compact hydraulic systems requiring 4-way, 2-position directional control.
SV08-47A-0-N-00:
The SV08-47A-0-N-00 is a 4-way, 3-position direct-acting spool-type solenoid cartridge valve with Tandem Center configuration. When de-energized, the spool blocks cylinder ports while allowing flow from 3 to 1 (P to T). When coil 1 is energized, flow is allowed from 3 to 2, and from 4 to 1. When coil 2 is energized, flow is allowed from 3 to 4, and from 2 to 1. The tandem center configuration is ideal for applications requiring cylinder port locking with P-port unloading in neutral.
SV08-47C-0-N:
The SV08-47C-0-N is a 4-way, 3-position direct-acting spool-type solenoid cartridge valve with Closed Center configuration. When de-energized, the spool blocks all ports. When coil 1 is energized, flow is allowed from 3 to 4, and from 2 to 1. When coil 2 is energized, flow is allowed from 3 to 2, and from 4 to 1. The closed center configuration is ideal for applications requiring complete port blocking in neutral for precise actuator positioning and locking.
SV08-47D-0-N:
The SV08-47D-0-N is a 4-way, 3-position direct-acting spool-type solenoid cartridge valve with Motor Spool center configuration. The valve features spring-offset closed design, returning to center when de-energized. The motor spool center is specifically designed for hydraulic motor directional control—with A and B ports open to T in neutral, allowing the motor to freewheel under inertia, preventing hydraulic locking impact damage.
All models feature wet-armature solenoid construction—the movable iron core operates submerged in hydraulic oil, providing both lubrication and cushioning for quiet, long-life, and highly reliable shifting performance. Continuous-duty rated solenoids support 24/7 operation.
As original HydraForce solenoid cartridge valves, these products offer complete interchangeability within the same series and size, requiring no modifications to cavities or piping layouts. The SV08 series utilizes industry-common VC08-4 cavities, fully compatible with globally adopted Size 08 cartridge valve interfaces.
Technical Specifications (Bulleted List)
SV08-40-0-P-24DC Specifications:
Model: SV08-40-0-P-24DC
Brand: HYDRAFORCE
Series: SV08 Series
Product Type: Solenoid Cartridge Valve
Spool Configuration: 4-way, 2-position
Valve Type: Direct-Acting Spool Type
Cavity: VC08-4
Pressure Rating: 207 bar (3000 psi)
Proof Pressure: 241 bar (3500 psi)
Burst Pressure: 620 bar (9000 psi)
Maximum Flow Rate: 11.4 L/min (3 GPM)
Maximum Internal Leakage: 164 ml/min (10 in³/min) @ 207 bar
Coil Voltage: 24V DC
Coil Type: Continuous-Duty Rated
Solenoid Type: Wet-Armature
Fluid Temperature Range: -40°C to +100°C (Buna-N seals)
Viscosity Range: 7.4 to 420 cSt
Recommended Cleanliness: ISO 4406 20/18/14
Installation Torque: 25.8 to 28.5 N·m
Maximum Allowable Torque: 51.2 N·m (aluminum manifold)
Weight: 0.11 kg (0.25 lb)
SV08-47A-0-N-00 Specifications:
Model: SV08-47A-0-N-00
Brand: HYDRAFORCE
Series: SV08 Series
Product Type: Solenoid Cartridge Valve
Spool Configuration: 4-way, 3-position
Center Type: Tandem Center
Valve Type: Direct-Acting Spool Type
Cavity: VC08-4
Pressure Rating: 240 bar (3500 psi)
Proof Pressure: 344 bar (5000 psi)
Burst Pressure: 779 bar (11300 psi)
Maximum Flow Rate: 11.4 L/min (3 GPM)
Maximum Internal Leakage: 164 ml/min (10 in³/min) @ 207 bar
Coil Type: Continuous-Duty Rated
Solenoid Type: Wet-Armature
Fluid Temperature Range: -40°C to +100°C (Buna-N seals)
Viscosity Range: 7.4 to 420 cSt
Recommended Cleanliness: ISO 4406 20/18/14
Installation Torque: 25.8 to 28.5 N·m
Maximum Allowable Torque: 47.5 N·m (aluminum manifold)
Weight: 0.157 kg (0.346 lb)
SV08-47C-0-N Specifications:
Model: SV08-47C-0-N
Brand: HYDRAFORCE
Series: SV08 Series
Product Type: Solenoid Cartridge Valve
Spool Configuration: 4-way, 3-position
Center Type: Closed Center — all ports blocked
Valve Type: Direct-Acting Spool Type
Cavity: VC08-4
Pressure Rating: 240 bar (3500 psi)
Proof Pressure: 344 bar (5000 psi)
Burst Pressure: 779 bar (11300 psi)
Maximum Flow Rate: 11.4 L/min (3 GPM)
Maximum Internal Leakage: 164 ml/min (10 in³/min) @ 207 bar
Coil Type: Continuous-Duty Rated
Solenoid Type: Wet-Armature
Fluid Temperature Range: -40°C to +100°C (Buna-N seals)
Viscosity Range: 7.4 to 420 cSt
Recommended Cleanliness: ISO 4406 20/18/14
Installation Torque: 25.8 to 28.5 N·m
Maximum Allowable Torque: 54.2 N·m (aluminum manifold)
Weight: 0.157 kg (0.346 lb)
SV08-47D-0-N Specifications:
Model: SV08-47D-0-N
Brand: HYDRAFORCE
Series: SV08 Series
Product Type: Solenoid Cartridge Valve
Spool Configuration: 4-way, 3-position
Center Type: Motor Spool
Valve Type: Direct-Acting Spool Type
Cavity: VC08-4
Pressure Rating: 240 bar (3500 psi)
Proof Pressure: 344 bar (5000 psi)
Burst Pressure: 779 bar (11300 psi)
Maximum Flow Rate: 11.4 L/min (3 GPM)
Maximum Internal Leakage: 164 ml/min (10 in³/min) @ 207 bar
Coil Type: Continuous-Duty Rated
Solenoid Type: Wet-Armature
Fluid Temperature Range: -40°C to +100°C (Buna-N seals)
Viscosity Range: 7.4 to 420 cSt
Recommended Cleanliness: ISO 4406 20/18/14
Installation Torque: 25.8 to 28.5 N·m
Weight: Approx. 0.16 kg (Reference only)
Key Technical Advantages
1. Compact Cartridge Valve Design for Space Savings
The SV08 series features screw-in cartridge construction that installs directly into integrated manifolds without external piping. Compared to traditional subplate-mounted solenoid valves, the cartridge design significantly reduces installation space and piping complexity—particularly advantageous for space-constrained mobile equipment and compact industrial machinery.
2. Direct-Acting Spool Design for Fast Response
All models feature direct-acting spool construction—the solenoid directly actuates the spool without pilot stage delay. This ensures extremely fast response and precise directional control, ideal for hydraulic systems requiring rapid shifting and precise timing.
3. Wet-Armature Solenoid for Quiet, Long-Life Operation
Features wet-armature construction—the movable iron core operates fully submerged in hydraulic oil. The hydraulic oil lubricates moving parts to reduce wear and cushions switching impact and vibration. Compared to dry-armature designs, the wet-type configuration delivers lower noise, longer service life, and higher reliability. Continuous-duty rated coils support 24/7 operation.
4. Wide Selection of Spool Configurations
The SV08 series offers multiple spool configurations—SV08-40 (4-way, 2-position), SV08-47A (Tandem Center), SV08-47C (Closed Center), and SV08-47D (Motor Spool). The extensive selection flexibly adapts to diverse hydraulic circuit requirements—from simple 2-position switching to complex 4-way, 3-position directional control, from actuator locking to motor freewheeling applications.
5. Superior Durability and Environmental Resistance
Hardened precision spool and cage working surfaces ensure long service life. Optional IP69K waterproof E-Coils are available for demanding wet and dusty environments. Products pass 960-hour salt spray corrosion testing per ASTM B117. Operating temperature range covers -40°C to +100°C, suitable for diverse extreme climate conditions.
6. Industry-Common Cavity for Global Compatibility
SV08 series adapts VC08-4 standard cavity (Size 08). Fully compatible with globally adopted Size 08 cartridge valve interfaces for direct replacement without manifold modifications. Voltage-interchangeable coils allow the same valve body to accommodate different voltage coils.
7. Optional Manual Override
All models support optional manual override. In case of power failure or emergency, the spool can be manually actuated for emergency directional control, ensuring system safety.
Application Areas
SV08-40-0-P-24DC (4-way, 2-position):
Compact Construction Machinery — Attachment directional control for mini-excavators and skid-steer loaders
Agricultural Equipment — Tractor hydraulic output control
Material Handling Equipment — Forklift attachment directional switching
Industrial Automation — Compact hydraulic systems requiring 4-way, 2-position control
SV08-47A-0-N-00 (Tandem Center):
Injection Molding Machinery — Cylinder port locking with P-port unloading in neutral
Hydraulic Presses and Forging Equipment — Press control requiring neutral pressure holding with P unloading
CNC Machine Tools — Directional control for machine tool hydraulic systems
Industrial Hydraulic Systems — General directional control requiring cylinder port locking in neutral
SV08-47C-0-N (Closed Center):
Precision Actuator Positioning Systems — Complete port blocking in neutral for precise position holding
Safety Interlock Devices — Complete flow cutoff in neutral for safety-critical systems
Injection Molding Clamping Systems — Clamp state holding preventing unexpected pressure release
Heavy-Duty Lifting Equipment — Bidirectional actuator locking in neutral
SV08-47D-0-N (Motor Spool):
Hydraulic Motor Drive Systems — Direction and speed control for travel and swing motors
Construction Machinery Travel Systems — Travel motor control for excavators and loaders
Winch and Hoist Systems — Hoist directional control with motor freewheeling in neutral
Fan Drive Systems — Cooling fan motor directional control and freewheeling
Expert Maintenance Tips
1. Installation Guidelines
SV08 series adapts VC08-4 standard cavity (Size 08). Thoroughly clean the cavity and valve exterior before installation to prevent foreign particles from entering and causing spool sticking or seal damage.
Cartridge installation torque: 25.8 to 28.5 N·m (19 to 21 ft-lb). Maximum allowable torque in aluminum manifolds: 47.5–54.2 N·m (model dependent)—do not exceed.
Coil nut torque: 5.4 to 6.8 N·m (4 to 5 ft-lb).
2. Hydraulic Fluid Cleanliness
Recommended fluid cleanliness: ISO 4406 20/18/14 or better.
Use mineral-based or synthetic hydraulic fluid with viscosity range of 7.4 to 420 cSt.
Install a return line filter with minimum 10 μm filtration rating.
3. Electrical Connection Specifications
SV08-40-0-P-24DC uses DC 24V supply. Verify supply voltage matches coil rated voltage before connection.
Coils are continuous-duty rated for 24/7 operation.
Optional IP69K waterproof E-Coils are available for demanding wet and dusty environments. Ensure the coil is fully locked during installation to maintain effective protection.
4. Installation Orientation
5. Periodic Maintenance Inspection
Inspect the valve body for external oil leakage every 2,000 operating hours or at least annually.
Check electrical connectors for looseness, oxidation, or moisture ingress.
Wet-armature solenoid coils can be replaced quickly 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 (if equipped) to ensure emergency availability.
