Vickers | SDG20S4-012F-50-S553
SDG20S4 012F 50 S553
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The SDG20S4 012F 50 S553 valve belongs to the Directional Control Valves series and is produced by Vickers for directing hydraulic flow in automated machinery. It is a single stage unit, so one spool section completes every shift without a pilot section. The valve handles petroleum oils, making it suitable for systems that use standard hydraulic fluid. To protect internal parts, the supply must meet ISO 4406 class 20/18/15 cleanliness. It manages a maximum flow of 20 gpm (75.7 l/min), which supports moderate actuator speeds. Ports P, A, and B are rated for 3000 psi (207 bar), allowing operation in high-pressure circuits.
The model mounts on a subplate or manifold, so removal requires no changes to fixed pipework. Its interface follows ISO 4401-05 size D05, ensuring compatibility with common CETOP 5 patterns. Fluid temperature must remain between 20 °C (70 °F) and 50 °C (122 °F) to maintain seal integrity. The tank port tolerates up to 1000 psi (70 bar), limiting back-pressure on return flow. These parameters define installation, thermal range, and return-line limits for reliable service within hydraulic automation.
Technical Specifications
Fluid Cleanliness
ISO 4406 20/18/15
Fluid Compatibility
Petroleum Oils
Max Flow Rate
20 gpm (75.7 l/min)
Max Working Temp
50 °C (122 °F)
Min Working Temp
20 °C (70 °F)
Mounting Interface
ISO 4401-05 (D05)
Pressure Rating (p/a/b)
3000 psi (207 bar)
Stage
Single Stage
Tank Port Rating (t)
1000 psi (70 bar)
Valve Mounting
Subplate/Manifold Mounted
1620 Old Apex Road
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