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SD8 Series
Blince
The Walvoil SD8 80 L/min 1-12 Sections Directional Control Valve is a robust solution designed for high-flow hydraulic systems in heavy machinery, ideal for applications requiring multiple actuator control. Engineered with a modular design and high-pressure capability, this valve ensures precise directional control and reliable performance in construction, agriculture, and industrial equipment.
Modular Multi-Section Design:
1-12 sectional configuration (80 L/min per section), enabling control of up to 12 hydraulic functions (e.g., booms, buckets, grapples) in a single manifold.
High-flow capacity (total 960 L/min for 12 sections), with pressure ratings up to 350 bar (5075 PSI) for heavy-duty actuators.
Precision Flow Control:
Load-sensing compensators (flow control accuracy ±5%) and priority valves, ensuring proportional flow distribution to multiple actuators under varying loads.
Optional electro-hydraulic proportional controls (4-20mA input), enabling stepless speed regulation for precision applications.
Durable Construction:
Forged aluminum alloy body (ISO 6722) and hard-chrome plated spools (25μm thickness), resisting wear (1 million cycles) and corrosion (salt spray: 1000 hours).
IP67-rated electrical connections (M12 connectors), protecting against water and dust in harsh outdoor environments.
System Integration:
SAE J518 ports and ISO 4401 mounting patterns, compatible with hydraulic pumps (e.g., Danfoss, Kawasaki) and control systems.
Built-in pressure relief valves (adjustable 100-350 bar), protecting downstream components from overpressure damage.
Ideal for multi-function hydraulic systems, the SD8 valve excels in:
Construction Machinery: Controls up to 12 hydraulic functions in excavators, loaders, and backhoes, enabling complex motions (e.g., simultaneous boom and bucket operation).
Agricultural Equipment: Manages implements (plows, sprayers, balers) on tractors and combines, with optional joystick control for operator comfort.
Material Handling Cranes: Directs flow to hoist, trolley, and slewing drives in mobile cranes, ensuring smooth motion control (velocity variation ≤2%).
Industrial Presses: Controls multi-cylinder presses in metal forming and recycling equipment, with synchronized motion for precision stamping.
Q: Can sections be added/removed after installation?
A: Yes, modular design allows field installation/removal of sections without system shutdown (hot-swappable design).
Q: What is the maximum pressure differential?
A: 350 bar (5075 PSI) inlet, 250 bar (3625 PSI) return, with pressure drop ≤2 bar at rated flow.
Q: Does it support load-sensing systems?
A: Yes, compatible with load-sensing pumps (LS pressure 10-35 bar), optimizing energy efficiency by 30% in variable-load applications.
Walvoil SD sectional control valve --Simple, compact and heavy duty designed sectional valve from 1 to 12 sections for open and closed centre hydraulic systems.
Fitted with a main pressure relief valve and a load check valve on every working section.
Available with parallel or series circuit.
Optional carry-over port.
A wide variety of service ports and circuit valves.
Available manual, pneumatic, hydraulic, electro-hydraulic and remote with flexible cables spool control kits.
Diameter 25 mm (0,98 in.) interchangeable spools.
SD series directional control valve
1.flow range of 30-400L/min, can meet different flow requirements;
2.Its compact, heavyand simple design, can be used in a variety of work scenarios for open or closed centre hydraulic systems;
3.stable performance, a variety of control methods to choose.
☆ Control type: manual, cable, pneumatic, electro-hydraulic,solenoid, etc.
☆ Circuit type: parallel
☆ Structure:monoblock or sectiona
| 参数 specifications | |||
| 额定流量 Nominal flow rate | 80L/min | 21 USGPM | |
| 最大工作压力 Operating pressure(max) | 315 bar | 4568 psi | |
| 工作粘度范围 Operating range | 15~75mm²/s | 15~75 cst | |
| 粘度 Viscosity | 最小 min | 12mm²/s | 12 cst |
| 最大 max | 400mm²/s | 400 cst | |
| 环境温度 Ambient temperature range | -40°~80℃ | -40°~176°F | |
| 结构 Structure | 分片式：1~12联 Sectional:1~12 sections | ||
The Walvoil SD8 80 L/min 1-12 Sections Directional Control Valve is a robust solution designed for high-flow hydraulic systems in heavy machinery, ideal for applications requiring multiple actuator control. Engineered with a modular design and high-pressure capability, this valve ensures precise directional control and reliable performance in construction, agriculture, and industrial equipment.
Modular Multi-Section Design:
1-12 sectional configuration (80 L/min per section), enabling control of up to 12 hydraulic functions (e.g., booms, buckets, grapples) in a single manifold.
High-flow capacity (total 960 L/min for 12 sections), with pressure ratings up to 350 bar (5075 PSI) for heavy-duty actuators.
Precision Flow Control:
Load-sensing compensators (flow control accuracy ±5%) and priority valves, ensuring proportional flow distribution to multiple actuators under varying loads.
Optional electro-hydraulic proportional controls (4-20mA input), enabling stepless speed regulation for precision applications.
Durable Construction:
Forged aluminum alloy body (ISO 6722) and hard-chrome plated spools (25μm thickness), resisting wear (1 million cycles) and corrosion (salt spray: 1000 hours).
IP67-rated electrical connections (M12 connectors), protecting against water and dust in harsh outdoor environments.
System Integration:
SAE J518 ports and ISO 4401 mounting patterns, compatible with hydraulic pumps (e.g., Danfoss, Kawasaki) and control systems.
Built-in pressure relief valves (adjustable 100-350 bar), protecting downstream components from overpressure damage.
Ideal for multi-function hydraulic systems, the SD8 valve excels in:
Construction Machinery: Controls up to 12 hydraulic functions in excavators, loaders, and backhoes, enabling complex motions (e.g., simultaneous boom and bucket operation).
Agricultural Equipment: Manages implements (plows, sprayers, balers) on tractors and combines, with optional joystick control for operator comfort.
Material Handling Cranes: Directs flow to hoist, trolley, and slewing drives in mobile cranes, ensuring smooth motion control (velocity variation ≤2%).
Industrial Presses: Controls multi-cylinder presses in metal forming and recycling equipment, with synchronized motion for precision stamping.
Q: Can sections be added/removed after installation?
A: Yes, modular design allows field installation/removal of sections without system shutdown (hot-swappable design).
Q: What is the maximum pressure differential?
A: 350 bar (5075 PSI) inlet, 250 bar (3625 PSI) return, with pressure drop ≤2 bar at rated flow.
Q: Does it support load-sensing systems?
A: Yes, compatible with load-sensing pumps (LS pressure 10-35 bar), optimizing energy efficiency by 30% in variable-load applications.
Walvoil SD sectional control valve --Simple, compact and heavy duty designed sectional valve from 1 to 12 sections for open and closed centre hydraulic systems.
Fitted with a main pressure relief valve and a load check valve on every working section.
Available with parallel or series circuit.
Optional carry-over port.
A wide variety of service ports and circuit valves.
Available manual, pneumatic, hydraulic, electro-hydraulic and remote with flexible cables spool control kits.
Diameter 25 mm (0,98 in.) interchangeable spools.
SD series directional control valve
1.flow range of 30-400L/min, can meet different flow requirements;
2.Its compact, heavyand simple design, can be used in a variety of work scenarios for open or closed centre hydraulic systems;
3.stable performance, a variety of control methods to choose.
☆ Control type: manual, cable, pneumatic, electro-hydraulic,solenoid, etc.
☆ Circuit type: parallel
☆ Structure:monoblock or sectiona
| 参数 specifications | |||
| 额定流量 Nominal flow rate | 80L/min | 21 USGPM | |
| 最大工作压力 Operating pressure(max) | 315 bar | 4568 psi | |
| 工作粘度范围 Operating range | 15~75mm²/s | 15~75 cst | |
| 粘度 Viscosity | 最小 min | 12mm²/s | 12 cst |
| 最大 max | 400mm²/s | 400 cst | |
| 环境温度 Ambient temperature range | -40°~80℃ | -40°~176°F | |
| 结构 Structure | 分片式：1~12联 Sectional:1~12 sections | ||
