Walvoil VOSL/SC Single Counterbalance Valve – 3/8" BSP, 40 L/min, 210 Bar, Pilot Ratio 1:4
1520021108
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Walvoil VOSL/SC Single Counterbalance Valve – 3/8" BSP, 40 L/min, 210 Bar, Pilot Ratio 1:4
Walvoil VOSL/SC 38 single counterbalance valve is a compact and reliable solution designed for load control and hydraulic stability in mobile and industrial systems. It is used to control overrunning loads, improve safety, and maintain smooth movement in applications where controlled lowering and load holding are essential.
Built with an aluminium body, this valve offers a strong balance of durability and reduced weight, making it well suited for demanding hydraulic environments. With a pilot ratio of 1:4, it provides responsive and controlled operation, helping ensure stable performance in load-holding circuits.
With a nominal flow rate of 40 l/min and a maximum operating pressure of 210 bar, the VOSL/SC 38 is suitable for a wide range of hydraulic applications. It also features an adjustable pressure setting range of 50–350 bar, with a standard setting of 280 bar at 5 l/min, allowing flexible configuration to suit system requirements.
Technical Specifications
| Specification | Details |
|---|---|
| Valve type | Single counterbalance valve |
| Model | VOSL/SC 38 |
| Body material | Aluminium |
| Port size | 3/8" BSP |
| Nominal flow rate | 40 l/min |
| Maximum operating pressure | 210 bar |
| Pilot ratio | 1:4 |
| Pressure setting range | 50–350 bar |
| Standard setting | 280 bar @ 5 l/min |
| Oil leakage | 0.25 cm³/min at 210 bar, 80% of pressure setting |
| Fluid | Mineral based oil |
| Viscosity range | 10 to 200 cSt |
| Fluid temperature | -20°C to 80°C (with NBR seals) |
| Environmental temperature | -40°C to 100°C |
Common Applications
The Walvoil VOSL/SC 38 single counterbalance valve is commonly used in hydraulic systems where load holding, motion control, and protection against overrunning loads are required. Typical applications include:
- Hydraulic cylinders – controlling lowering speed and maintaining load stability
- Mobile machinery – improving safety and control in lifting and load-holding functions
- Construction equipment – managing suspended or overrunning loads in demanding applications
- Agricultural machinery – stabilising hydraulic movements on booms and attachments
- Industrial hydraulic systems – providing secure load control and pressure regulation
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United Kingdom delivery rates & estimates
| Service | Price | Terms |
|---|---|---|
| FREE Delivery | FREE | Free UK delivery is available for orders over £99.99+ VAT. Delivered by close of business next working day. |
| Express Delivery | £9.99 + VAT | UK Mainland delivery for orders under £99.99 + VAT. Delivered by close of business next working day. |
| Express 9am | £42.95 + VAT | Delivered by 9am next working day. |
| Express 12pm | £20.95 + VAT | Delivered by 12pm next working day. |
| Channel Islands | ||
| Standard Delivery | £20.95 + VAT | Delivery in 2–3 working days. |
| UK Highlands & Isles | ||
| Order value below £99.99 + VAT | £31.95 + VAT | Delivery in 2–3 working days. |
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