Product Overview
The CKD MMD302-4BJ-MC-MC is a manually actuated chemical liquid valve engineered by CKD Corporation for precise, leak-free control of aggressive and high-purity process fluids. Featuring a robust PTFE (polytetrafluoroethylene) wetted body and a diaphragm-isolated manual actuator, this valve is purpose-built for chemical dosing, transfer, and shut-off duties in semiconductor, analytical, and industrial fluid-handling systems. Its four-port, multi-way configuration allows flexible integration into complex chemical distribution circuits, while the manual handwheel provides reliable, energy-independent operation where electrical actuation is impractical or undesirable. The MMD302 series is recognized for its outstanding chemical resistance, minimal dead volume, and bubble-tight sealing, making it a trusted component in high-purity and corrosive media applications.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Manual Chemical Liquid Valve (Process & Pneumatic Valve) |
| Model Designation | MMD302-4BJ-MC-MC |
| Manufacturer | CKD Corporation |
| Actuation Type | Manual (Handwheel / Lever Actuated) |
| Port Configuration | 4-Port Multi-Way (Model Code 4BJ) |
| Body / Wetted Material | PTFE / PFA (Chemical-Resistant Fluoropolymer) |
| Sealing Principle | Diaphragm-Isolated, Bubble-Tight Shut-Off |
| Operating Pressure | Standard Industrial Grade (Up to rated bar for chemical service) |
| Mounting & Connection | Standard ISO / Manufacturer Interface (Flare / Tube Fitting) |
| Media Compatibility | Acids, Bases, Solvents, High-Purity Chemicals |
Engineering Features & Advantages
- Precision Performance: The diaphragm-isolated design prevents fluid contact with the actuator mechanism, ensuring contamination-free operation and precise flow control for high-purity chemical dosing and transfer applications.
- Superior Chemical Resistance: PTFE/PFA wetted surfaces deliver exceptional resistance to aggressive acids, bases, and solvents, extending service life in the most demanding chemical environments.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust manual actuator that requires no external power source and maintains stable performance over extended duty cycles.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original CKD OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
The MMD302 series is recognized for its outstanding chemical resistance, minimal dead volume, and bubble-tight sealing, making it a trusted component in high-purity and corrosive media applications.
PRODUCT IMAGES
CKD MMD302-4BJ-MC-MC Manual 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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- 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.
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