SD8 series Walvoil high pressure hydraulic valves, with safety control valve
| Attribute | Value |
|---|---|
| Item | Hydraulic Valve |
| Model No. | SD8-6 |
| Flow | 80 LPM |
| Manufacturer | Hanjiu |
| Material | Cast Iron |
| Warranty | 12 months |
The SD8 Valve is a reliable and durable hydraulic valve designed for superior performance. Its compact design, high pressure resistance, and long service life make it ideal for various industrial applications.
This versatile valve offers customizable options including hydraulic system selection, valve body customization, and multiple control methods to meet specific operational requirements.
| Parameter | Value |
|---|---|
| Control Method | Manual control valve |
| Pressure Medium | Mineral oil based hydraulic oil |
| Nominal Flow | 80 L/min (21 gpm) |
| Viscosity Range | 15 CST-75 CST |
| Operating Pressure | 315 bar (4568 psi) |
| Ambient Temperature | -40°C to +80°C (-40°F to +176°F) |
| Valve Structure | Sectional type Valve |
| Valve Sections | 6 Bank |
| Rustproof Level | Neutral salt spray test, 48hours |
| Product Series | Application Equipment |
|---|---|
| DCV | Drilling rigs, cranes, flatbed trucks, special operation vehicles, dump trucks, truck-mounted cranes |
| P40/80/120 | Tractors, agricultural equipment, flatbed trucks, truck-mounted cranes |
| P81 | Wood splitter |
| Walvoil SD5/8/11 | Agricultural equipment, drilling rigs, truck-mounted cranes |
| Bucher DS15 | Can replace part of DCV according to installation size and flow pressure |
| RD5100/5200/5300 | Tractors, agricultural equipment, flatbed trucks, truck-mounted cranes |
| HDCF50 | Crop harvesting machinery including corn harvesters, wheat pickers |
| HSV6/9 | Excavator modifications and machinery movement changes |
| HSGK | Scissor-type aerial work vehicles |
| ZT12/20 | Sprayers, can replace DCV40, P40/80 functions |
| CDB15/20 | Loaders, forklifts, drilling rig traveling valves |
| DF50/80 | Tractors |
| Product series with L | Loaders |
Directional valves are essential hydraulic components that control liquid flow direction and speed. They precisely regulate spool position to guide fluid between channels, enabling direction control and flow regulation in hydraulic systems.
Structurally, hydraulic directional valves consist of valve body, spool, spring, and solenoid coil components. The valve body contains multiple channels connecting pipes and other hydraulic components, while the spool determines fluid paths. Solenoid coils receive electrical or mechanical signals to drive spool movement for precise flow control.
Regular maintenance ensures continuous operation of hydraulic directional valves:
- Check sealing performance and replace seals if leakage occurs
- Clean valve interior regularly to remove accumulated impurities
- Inspect electrical wiring to ensure proper spool control
- Replace hydraulic oil periodically to maintain cleanliness and viscosity
- Conduct regular pressure testing to identify performance issues
For replacement needs, Hanjiu produces high-quality hydraulic valves with guaranteed quality and comprehensive after-sales service.
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