Product Overview
The CKD AMD71L-40AU-2A-4R is a pneumatically actuated chemical liquid valve engineered for precise, contamination-free control of aggressive and high-purity media in industrial fluid handling systems. Manufactured by CKD Corporation, a recognized leader in fluid control technology, this air-operated valve utilizes a compressed-air pilot signal to drive a diaphragm or piston actuator, translating pneumatic pressure into reliable linear sealing force. The AMD71L series is purpose-built for chemical dosing, transfer, and shut-off duty where wetted-path integrity, leak-tight closure, and repeatable response are critical. Its 40 mm nominal port configuration and 2A/4R control designation indicate a normally closed, air-to-open architecture with a specific actuator and seal combination suited to chemically resistant service. As a process valve rather than a pump, it performs no fluid displacement work; instead, it functions as a precision flow-isolation and metering element within larger hydraulic and pneumatic circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Air Operated Chemical Liquid Valve (Process & Pneumatic Valve) |
| Model Designation | AMD71L-40AU-2A-4R |
| Manufacturer | CKD Corporation |
| Nominal Port Size | 40 mm (DN40 class) |
| Actuation Type | Pneumatic (Air-Operated) Actuator |
| Operating Pressure | Standard Industrial Grade (Up to rated bar) |
| Mounting & Connection | Standard ISO / Manufacturer Interface |
Engineering Features & Advantages
- Precision Performance: Air-operated actuation delivers fast, repeatable open/close response with consistent sealing force, enabling accurate control of chemical liquid flow and minimizing surge or hammer effects in dosing lines.
- Chemical-Resistant Wetted Path: Body and seal materials are selected for compatibility with aggressive chemical liquids, protecting media purity and extending service life in corrosive environments.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust actuator and valve body designed to withstand cycling duty and elevated line pressures.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in interchangeability with existing CKD AMD71L installations.
Typical Industrial Applications
This air-operated chemical liquid valve is deployed across demanding process environments, including chemical dosing and transfer systems in water treatment and pharmaceutical production, plastic injection molding machine cooling and mold-temperature circuits, metallurgical and surface-treatment fluid lines, and CNC machine tool coolant or cutting-fluid management. It is equally suited to semiconductor wet-process chemical delivery, food and beverage CIP circuits, and general industrial automation where reliable pneumatic shut-off of chemically active liquids is required.
PRODUCT IMAGES
CKD AMD71L-40AU-2A-4R Air Operated Chemical Liquid Valve
⚡ 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.
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