Introduction
The Iwaki AX series metering pumps are compact hydraulic diaphragm pumps tailored for advanced chemical processes. They are equipped with a reliable driving unit and a unique hydraulic system, ensuring stable and long-term performance across various industries such as chemical, paper, food, and wastewater treatment.

Specifications
The AX series is characterized by high precision and reliability, offering metering accuracy within ±1% and linearity within ±2%. These pumps are engineered for continuous operation, enhancing mechanical efficiency and cost-effectiveness.

Design and Features
The pumps are designed to be compact and lightweight, incorporating an integrated SL crank and worm reduction gear. A new servo system with a built-in positioner simplifies instrumentation and field adjustments.

Components and Mechanisms

• SL Crank: Delivers high piston driving force with a dependable stroke adjustment mechanism.
• Driving Unit: Features interconnected lubricating and hydraulic oil circuits with an air breather to prevent water ingress.
• Automatic Air Vent Valve: Releases gas from hydraulic oil to maintain accuracy.
• Spherical Diaphragm: Provides high durability without tensile stress.
• Oil Compensator Valve: Ensures optimal oil volume in the hydraulic cylinder.

Hydraulic System
The system operates by moving a piston to drive the diaphragm through hydraulic oil, facilitating discharge and suction strokes. The diaphragm acts as a membrane, separating hydraulic oil from the liquid without stress concentration. The system includes an oil compensator valve and an automatic air vent valve for optimal operation.

Series Configuration
The AX series comprises various models with different components to meet diverse application needs.

Conclusion
The Iwaki AX series metering pumps are engineered for high precision, reliability, and efficiency, making them ideal for a broad range of industrial applications.