Product Overview
The FLOWSERVE 20-RDC40-1SDBE0-D is a quarter-turn pneumatic valve actuator engineered for precise, reliable operation of rotary process valves in demanding industrial environments. As part of Flowserve’s RDC series, this double-acting rack-and-pinion actuator converts compressed air pressure into controlled rotary torque, delivering smooth 90-degree valve actuation for ball, butterfly, and plug valves. The 20-RDC40-1SDBE0-D is designed for seamless integration into automated process control loops, offering consistent torque output, rapid response, and long service life in chemical, petrochemical, water treatment, and power generation systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Valve Actuator (Quarter-Turn, Rack-and-Pinion) |
| Model Designation | 20-RDC40-1SDBE0-D |
| Actuation Type | Double-Acting Pneumatic |
| Operating Pressure | Standard Industrial Grade (Up to 8 bar / 116 psi) |
| Rotation | 90° Quarter-Turn (Adjustable ±5°) |
| Mounting & Connection | Standard ISO 5211 Valve Interface / NAMUR Accessory Mounting |
| Body Material | Anodized Aluminum Alloy |
| Seal Material | NBR / Nitrile (Standard Industrial Service) |
| Temperature Range | -20°C to +80°C (-4°F to +176°F) |
Engineering Features & Advantages
- Precision Rack-and-Pinion Actuation: Dual-opposed rack-and-pinion mechanism ensures balanced torque output, minimal backlash, and smooth 90-degree rotation for accurate valve positioning and tight shutoff.
- Double-Acting Reliability: Air pressure drives both opening and closing strokes, providing consistent bidirectional torque and rapid fail-safe response in automated process control loops.
- Industrial Reliability: Hard-anodized aluminum body and precision-machined internal components are built for continuous operation under severe industrial conditions, including high-cycle and corrosive environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with Flowserve OEM standards, featuring ISO 5211 mounting and NAMUR interface for straightforward integration with solenoids, positioners, and limit switch boxes.
- Low Maintenance Design: Modular construction allows quick access to seals and wear components, minimizing downtime and extending service intervals.
Typical Industrial Applications
The FLOWSERVE 20-RDC40-
PRODUCT IMAGES
FLOWSERVE 20-RDC40-1SDBE0-D 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 FLOWSERVE 20-RDC40-1SDBE0-D Solenoid Directional Control Valve. This Germany-made 24 VDC hydraulic component features a 4-way 3-position design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.