Product Overview
The CKD AMD512-20AU-20-6-4 is a high-precision, air-operated chemical liquid valve engineered by CKD Corporation, a globally recognized leader in fluid control technology. Designed specifically for the safe and accurate handling of aggressive chemical liquids, this valve utilizes a robust pneumatic piston actuator to drive a PTFE (Polytetrafluoroethylene) or PFA (Perfluoroalkoxy) lined diaphragm or bellows mechanism. Unlike standard hydraulic directional valves, this unit is purpose-built for process industries where media purity and containment are paramount. It serves as a critical isolation or control component in automated chemical delivery systems, ensuring leak-free operation and minimal dead volume to prevent fluid stagnation or contamination.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Air Operated Chemical Liquid Valve (Pneumatic Process Valve) |
| Model Designation | AMD512-20AU-20-6-4 |
| Operating Pressure | Standard Industrial Grade (Up to rated bar for chemical process lines) |
| Mounting & Connection | Standard ISO / Manufacturer Interface (Flanged or Threaded process connections) |
| Actuation Method | Pneumatic (Air Pilot) with Spring Return or Double Acting options |
| Body & Seal Material | Corrosion-resistant Fluoropolymer (PTFE/PFA) wetted parts |
Engineering Features & Advantages
- Superior Chemical Resistance: The wetted components are constructed from high-grade fluoropolymers, providing exceptional resistance to strong acids, bases, and high-purity solvents, ensuring long service life and media integrity.
- Precision Actuation & Control: The air-operated piston mechanism delivers rapid, repeatable response times, allowing for precise flow control and reliable shut-off in automated batch processing sequences.
- Leak-Free Containment: Features a dynamic bellows or diaphragm seal design that completely isolates the actuator from the process fluid, eliminating the risk of external leakage and environmental contamination.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a compact, robust housing that withstands vibration and thermal cycling common in chemical plants.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original CKD OEM standards, ensuring seamless integration into existing manifolds and piping systems.
Typical Industrial Applications
This valve is ideally suited for critical fluid handling in semiconductor manufacturing (wet chemical etching and cleaning), pharmaceutical production (sterile fluid transfer), chemical processing plants (acid and solvent dosing), and water treatment facilities (corrosive additive injection). Its design ensures safe operation in environments where media purity and operator safety are non-negotiable.
PRODUCT IMAGES




CKD AMD512-20AU-20-6-4 Air Operated Chemical Liquid Valve
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 CKD AMD512-20AU-20-6-4 Solenoid Directional Control Valve. This Japan-made 24V DC hydraulic component features a 5-port 4-way design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.