Sumitomo Precision Products Directional Valve SD4GS-AcB-03B-200-30

• Brand: Sumitomo
• Country/Region of Manufacture: Unknown
• MPN: SD4GS-AcB-03B-200-30
• Model: Sumitomo Precision Products SD4GS-AcB-03B-200-30
• Type: Hydraulic

The Sumitomo SD4GS-AcB-03B-200-30 SEO is a high-performance, solenoid-operated, 4-way directional control valve designed for precise control of pneumatic actuators (cylinders and motors). It is part of Sumitomo’s extensive and reputable line of pneumatic components, known for their reliability, compact size, and long service life.

This specific model is engineered for applications requiring high flow capacity, fast response times, and durable operation in industrial automation environments.

Key Features

• Solenoid Operated: Uses an electrical signal to actuate the valve, making it ideal for integration with PLCs and automated control systems.

• 4-Way, 2-Position (4/2) Function: This valve has four ports (Pressure In, Exhausts A & B, and Outputs A & B) and two positions. It is designed to control double-acting cylinders, extending and retracting the piston.

• High Flow Capacity (Cv ≈ 2.0): The large internal flow paths (orifice size) allow for a high volume of air to pass through, enabling rapid cylinder movement and efficient operation of larger actuators.

• Popper Type (Poppet Valving Element): Unlike spool valves, the poppet design is highly resistant to contamination from dirty air and does not require lubrication. This makes it exceptionally durable and low-maintenance.

• Sub-base Mounting (ISO 5599/1 Size 2): It mounts on a standardized sub-base (manifold), which simplifies piping, reduces potential leak points, and allows for easy valve replacement without disturbing the air lines.

• Single Solenoid, Spring Return (SEO): The “SEO” suffix indicates it is a Single Electrical Operator valve. When energized, the valve shifts; when de-energized, an internal spring automatically returns it to its default position.

Detailed Model Number Breakdown (SD4GS-AcB-03B-200-30 SEO)

Sumitomo’s model numbers are a code that specifies every feature of the valve.

• SD4G: The base model series identifier for this family of 4-way directional valves.

• S: Solenoid operated.

• -A: Specifies the number of positions and port configuration (e.g., 4-way, 2-position).

• cB: c = Single Solenoid; B = Spring Return.

• -03: Port Size. “03” corresponds to Rc 3/8 (British Pipe Parallel) or NPT 3/8.

• B: Actuator Type. “B” denotes a standard, single solenoid operator.

• -200: Voltage and Frequency. “200” typically specifies the coil voltage. *This is a critical detail to confirm from the supplier’s datasheet, as it could represent a common voltage like 100VAC, 110VAC, 120VAC, or 200VAC, along with its frequency (50/60Hz).*

• -30: Design/Manufacturing Code. An internal code for specific production details or a minor revision.

• SEO: This is a summary suffix reinforcing the actuator type: Single Electrical Operator (Spring Return).

Technical Specifications (Typical)

Typical Applications

This valve is suited for a wide range of industrial automation tasks, including:

• Machine Automation: Controlling clamps, presses, and indexing tables.

• Material Handling: Operating actuators on pick-and-place units, conveyors, and sorting systems.

• Packaging Machinery: Driving cylinders for sealing, filling, and cartoning operations.

• Automobile Manufacturing: Used in assembly jigs, welding fixtures, and part transfer systems.

• Any application requiring reliable, high-speed control of a double-acting cylinder.