Product Overview
The CKD AMB71-50AU-4-4 is a pneumatically actuated chemical liquid valve engineered by CKD Corporation for precise, contamination-free control of aggressive and high-purity process fluids. Operating on a normally closed (NC) air-operated principle, the valve uses an external pilot air signal to drive a piston actuator, which in turn strokes the valve element against a return spring to open the flow path. The wetted body and diaphragm are constructed from chemically resistant PTFE/PFA materials, isolating the process fluid from the actuator and preventing corrosion, leaching, and cross-contamination. With a 50 mm nominal port size and a 4-4 configuration, this model is designed for reliable on/off and switching duty in semiconductor wet benches, chemical dosing skids, and industrial fluid transfer lines where media compatibility and leak-tight shutoff are critical.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Air Operated Chemical Liquid Valve (Pneumatic Process Valve) |
| Model Designation | AMB71-50AU-4-4 |
| Manufacturer | CKD Corporation |
| Nominal Port Size | 50 mm (2 in) |
| Actuation Type | External Pilot Air, Spring Return |
| Valve Function | Normally Closed (NC) On/Off |
| Pilot Air Pressure | 0.4 to 0.7 MPa (4 to 7 bar) |
| Wetted Materials | PTFE / PFA Diaphragm, Corrosion-Resistant Body |
| Mounting & Connection | Flanged / Threaded Process Connection, Standard Pilot Port Interface |
Engineering Features & Advantages
- Precision Performance: The diaphragm-sealed design delivers tight shutoff and accurate on/off control of chemical liquids without dead pockets or entrapment zones, ensuring repeatable dosing and switching cycles.
- Chemical Compatibility: Fluoropolymer wetted surfaces resist acids, bases, solvents, and high-purity chemistries, extending service life in aggressive media handling.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust piston actuator and spring return providing fail-safe closure on loss of pilot air.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original CKD OEM standards, allowing drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
This valve is widely deployed in semiconductor and electronics wet-process equipment, chemical dosing and blending skids, pharmaceutical and biotech fluid handling systems, and general industrial process lines requiring reliable pneumatic control of corrosive or high
PRODUCT IMAGES
CKD AMB71-50AU-4-4 Air Operated Chemical Liquid Valve
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Shop the genuine CKD AMB71-50AU-4-4 Pneumatic Cylinder. This Japan-made 50mm bore component features a double-acting design, delivering leak-free, reliable linear motion for heavy-duty industrial systems.