SD8 – Compact, versatile and flexible sectional valve
The Walvoil SD8 is a compact, versatile, and heavy-duty sectional valve designed for both open and closed-center hydraulic systems. It is widely used in mobile machinery like cranes, excavators, and loaders because it allows for a high degree of customisation with up to 12 or 14 individual sections.
- Operating Pressure : High Performance Range
- Application : Industrial & Mobile Systems
About this item
The Walvoil SD8 is a cornerstone in the world of hydraulic control, widely recognized for its modularity and high-flow efficiency. It is designed to bridge the gap between small, compact valves and heavy-duty industrial systems, making it a “workhorse” for medium-sized machinery.
| Feature | Technical Specification / Detail |
|---|---|
| Nominal Flow Rating | 80 l/min (21 US gpm) |
| Maximum Operating Pressure | 315 bar (4600 psi) |
| Number of Sections | From 1 to 12 working sections (standard) |
| Section Pitch | 41 mm (1.61 in) |
| Spool Diameter | 18 mm (0.71 in) with interchangeable options |
| Circuit Types | Parallel, tandem, or series configuration |
| Safety Features | Integrated load check valves and main pressure relief valve |
| Auxiliary Ports | Available Power Beyond (Carry-over) port |
| Control Methods | Manual, pneumatic, hydraulic, electro-hydraulic, or cable |
| System Compatibility | Designed for both Open and Closed center systems |
Common Applications
The SD8 is specifically engineered for high-demand mobile equipment, including:
- Construction: Back-hoe excavators and front-loaders.
- Lifting: Cranes and telescopic boom forklifts.
- Industrial: Waste compactors and drilling rigs (both vertical and horizontal).
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