Product Overview
The OMAL DA120411S is a double-acting pneumatic actuator from OMAL’s established rack-and-pinion actuator series, engineered for quarter-turn (90°) valve automation in industrial fluid control systems. The “DA” designation identifies a double-acting configuration, in which compressed air is applied alternately to the two internal chambers to drive the piston stroke in both the opening and closing directions, providing positive torque in each travel direction without reliance on spring return. The model code further indicates a 120-series body size with a 41 mm piston stroke and a standard female star drive output, matching OMAL’s modular valve mounting philosophy. The actuator converts pneumatic supply pressure into rotary torque through a precision-machined rack-and-pinion mechanism, with the pinion supported by low-friction bearings and the cylinder bore hard-anodized for wear and corrosion resistance. As a spare or accessory component within general industrial plant infrastructure, the DA120411S serves as a direct replacement or new-build actuator for ball valves, butterfly valves, and plug valves, delivering reliable, repeatable quarter-turn actuation in process lines where electric actuation is impractical or where fast, high-cycle operation is required.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | General Industrial Parts — Pneumatic Actuator (Spares & Accessories) |
| Model Designation | OMAL DA120411S |
| Actuation Principle | Double-acting rack-and-pinion, 90° quarter-turn |
| Operating Pressure | Standard Industrial Grade (typically 2–8 bar filtered dry air) |
| Output Torque | Size-specific torque curve per OMAL 120-series data (stroke 41 mm) |
| Mounting & Connection | Standard ISO 5211 valve flange interface with female star drive output |
| Air Ports | Threaded supply/exhaust ports per manufacturer standard |
| Body Construction | Hard-anodized extruded aluminum cylinder with corrosion-resistant finish |
| Sealing | NBR (nitrile) O-rings and piston seals, factory lubricated for life |
Engineering Features & Advantages
- Precision Quarter-Turn Performance: The rack-and-pinion mechanism delivers smooth, backlash-minimized 90° rotation with consistent torque output, ensuring accurate valve positioning and repeatable stroke-to-stroke behavior in automated process lines.
- Double-Acting Control Flexibility: Independent air supply to each chamber provides positive drive in both directions, enabling fast cycling and precise fail-position control when paired with a suitable solenoid valve and positioner.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Precision-manufactured to original OMAL specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
As a spare or accessory component within general industrial plant infrastructure, the DA120411S serves as a direct replacement or new-build actuator for ball valves, butterfly valves, and plug valves, delivering reliable, repeatable quarter-turn actuation in process lines where electric actuation is impractical or where fast, high-cycle operation is required.
PRODUCT IMAGES
OMAL DA120411S Pneumatic Actuator
âš¡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine OMAL DA120411S Solenoid Directional Valve. This Italy-made 24V DC hydraulic component features a spool-type design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.