Product Overview
The CKD AMD522-15AU-0-4 is a pneumatically actuated (air operated) chemical liquid valve engineered by CKD Corporation for precise, leak-free control of aggressive and high-purity fluid media in industrial process systems. Operating on a pilot-air actuation principle, the valve uses an external compressed-air signal to drive an internal diaphragm or piston actuator, which in turn opens or closes the fluid passage without exposing the solenoid or actuator mechanism to the process medium. This isolation design makes the AMD522 series particularly suited to chemical dosing, transfer, and shut-off duties where media compatibility, contamination control, and repeatable sealing are critical. As a process and pneumatic valve within the broader hydraulic and pneumatic valve family, it serves as a reliable flow-control interface between pneumatic control logic and liquid chemical circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Air Operated Chemical Liquid Valve (Process & Pneumatic Valve) |
| Model Designation | AMD522-15AU-0-4 |
| Manufacturer | CKD Corporation |
| Actuation Type | External pilot air (pneumatic), normally closed configuration |
| Port Size | 15A (approx. 1/2 in) nominal process connection |
| Body / Wetted Material | Chemical-resistant construction with isolated diaphragm seal |
| Operating Pressure | Standard industrial process grade (rated per manufacturer data) |
| Pilot Air Pressure | Standard pneumatic control range (typically 0.3–0.7 MPa) |
| Mounting & Connection | Standard threaded / flange interface per CKD process valve standard |
Engineering Features & Advantages
- Precision Performance: Pneumatic pilot actuation delivers fast, repeatable open/close response with consistent sealing force, ensuring accurate shut-off and minimal fluid loss in chemical dosing and transfer lines.
- Media Isolation: The actuator and pilot air circuit are fully separated from the wetted fluid path, protecting internal components from corrosive chemical attack and preventing cross-contamination.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust body and diaphragm seal designed for extended cycle life in demanding process environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original CKD AMD522 series standards, allowing straightforward drop-in replacement without modification to existing piping or control circuits.
Typical Industrial Applications
The CKD AMD522-15AU-0-4 is deployed across heavy industrial and process sectors including chemical dosing and reagent feed systems, semiconductor and electronics wet-process lines, water and wastewater treatment chemical injection, and
PRODUCT IMAGES
CKD AMD522-15AU-0-4 Air Operated Chemical Liquid Valve
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
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