SV1-10/48/315/6 EMG Rotary Direct Drive Servo Valve

Product Overview

The SV1-10/32/100/6 and SV1-10/48/315/6 (226702) are EMG SV1 series rotary direct-drive servo valves (single-stage proportional servo valves). Featuring a patented electromagnetic rotary drive with return springs, these direct-operated valves mount to ISO 4401 NG10 / CETOP 5 interfaces. Nominal flow options are 32 or 48 L/min (at Δp=20 bar), with operating pressures up to 315 bar. They offer true interchangeability as drop-in replacements for original units. Every valve undergoes precision machining and 100% simulated duty-cycle testing to ensure high dynamic response, low hysteresis and precise flow control.

Technical Specifications 

• Model: SV1-10/32/100/6 / SV1-10/48/315/6 (EMG SV1 Series)
• Nominal Size: NG10 (ISO 4401 / CETOP 5)
• Nominal Flow: 32 L/min or 48 L/min (at Δp=20 bar; higher at greater Δp)
• Operating Pressure Range: 5–100 bar or 30–315 bar
• Maximum Return Pressure: 30 bar
• Actuation: Electromagnetic rotary direct drive with return springs
• Overlap: 1% or 6%
• Weight: Approx. 6.5–7.5 kg
• Operating Temperature: –10°C to +70°C
• Hydraulic Fluid: Mineral oil etc. (HFC/HFD options available)

Key Technical Advantages

1. Patented rotary direct-drive design – Electromagnetic rotary actuation replaces traditional torque motors for faster response, compact size and high reliability.
2. High dynamics and low hysteresis – Single-stage direct operation ideal for high-precision position and velocity closed-loop control.
3. True interchangeability and standard interfaces – Fully compliant with ISO 4401 NG10 mounting, enabling direct replacement of original valves.
4. Precision machining and wide pressure range – Supports both low- and high-pressure versions, verified by 100% duty-cycle testing for long-term stability.

Application Areas

Ideal for test stands, injection molding machines, die-casting equipment, metal forming, servo-hydraulic systems and any industrial closed-loop application requiring high-precision flow and position control.

Expert Maintenance Tips

Ensure the manifold is clean and flat during installation; maintain high fluid cleanliness; make reliable electrical connections; periodically check leakage and dynamic response; confirm zero position on first power-up; after prolonged storage, energize the valve to verify free operation.