IDG20V4-03D: Modular Polymeric Membrane Air Dryer, Power-Free and Energy-Saving High-Performance Drying Unit

Product Positioning
The IDG20V4-03D is a modular polymeric membrane air dryer from the SMC IDG series. It utilizes hollow fiber membrane technology to supply dry air to compressed air systems without the need for electricity or refrigerants. As a core component of an air preparation unit, this product uses the permeation principle of polymeric membranes to simply and conveniently lower the pressure dew point of compressed air to -20°C. It is characterized by energy efficiency, compactness, and high performance, and is widely used in semiconductor manufacturing, electronics assembly, painting equipment, medical devices, and various automation fields requiring high-quality dry air sources.

Core Highlights: Polymeric Membrane Technology, Power-Free Drying, Modular Integration

• Polymeric Hollow Fiber Membrane Technology, Eco-friendly (No Electricity, No Fluorocarbons): Utilizes hollow fiber membrane physical separation technology. It leverages the membrane’s selective permeability to separate and exhaust water vapor from the compressed air.
  • The entire process requires no electricity, no refrigerant (fluorocarbon-free), no vibration, and no heat exhaust, resulting in extremely low operating costs and environmental friendliness.
• Reference Dew Point -20°C, Stable Drying Performance: Under standard conditions (inlet air pressure 0.7 MPa, temperature 25°C), the outlet air atmospheric pressure dew point can reach -20°C.
  • Inlet air flow rate: 250 L/min (ANR), Outlet air flow rate: 200 L/min (ANR), Purge air flow rate: 50 L/min (ANR).
• Modular Integration, Includes Mist Separator and Regulator: The “V” in the model number indicates the unit configuration includes a mist separator and a regulator (With Mist Separator and Regulator).
  • As an integrated modular dryer, it combines a mist separator (AFD series), a polymeric membrane dryer (IDG series), and a regulator (AR series) into a single, complete dry air preparation unit.
  • The mist separator model is AFD20-A, and the regulator model is AR20-B (reference standard configuration).
  • Connection method: Modular connection. It can be seamlessly combined with other upstream/downstream pneumatic components using connectors, simplifying piping layout and saving installation space.
• Energy-Saving Design, Reduced Purge Air Consumption: Optimized membrane module design can reduce purge air consumption by up to 39 L/min (ANR), significantly lowering compressed air consumption and achieving energy savings.
• High-Efficiency Design, Shortened Dew Point Stabilization Time: A new pneumatic combination design shortens the time to reach the reference dew point by up to 40 minutes, quickly meeting the system’s demand for a dry air source.
• Compact and Lightweight, Saves Maintenance Space: The modular design significantly reduces the space required for maintenance while also reducing overall weight, facilitating integration into equipment.
• N.O. Auto Drain, Easy Maintenance: The “D” in the model number represents the drainage method: N.O. Auto Drain (Normally Open Auto Drain).
  • Automatically discharges separated condensate, eliminating the need for manual periodic draining and reducing maintenance workload.
• Rc3/8 Standard Port, Wide Operating Condition Adaptability: Port size is Rc 3/8″ (tapered pipe thread), conforming to common Asian standards.
  • Operating inlet air pressure range: 0.3 ~ 0.85 MPa, Inlet air temperature: -5 ~ 55°C (no freezing), Ambient temperature: -5 ~ 55°C.
  • Weight: Approx. 1.5 kg (Type V).

Model Number Breakdown
Based on detailed specifications from multiple sources, the meaning of the IDG20V4-03D model number is as follows:

Specifications Overview

Operating Principle: Polymeric Membrane Separation Technology
The IDG series dryer utilizes polymeric hollow fiber membrane technology:

• Core Component: Contains thousands of fine hollow fiber membranes inside.
• Separation Process: Compressed air passes through the inner channels of the hollow fibers. Water vapor molecules, being smaller, permeate through the membrane wall to the fiber’s outer side under pressure differential.
• Purge Action: A small portion of the dried air (purge air) is directed back to the outer side of the fibers, sweeping away the permeated water vapor and exhausting it to the atmosphere.
• Continuous Drying: This process occurs continuously, resulting in a consistent and stable output of dry air.

Applicable Scenarios

• Semiconductor Manufacturing: Processes requiring strict dew points for compressed air, such as wafer handling, lithography equipment, packaging, and testing.
• Electronics Assembly: Applications needing oil-free and water-free air, like PCB cleaning, component placement, precision dispensing.
• Painting Equipment: Pre-treatment, painting process, and spray gun blow-off to prevent moisture from affecting coating quality.
• Medical Devices: Medical instruments requiring clean, dry air, such as ventilators, dental equipment, analytical instruments.
• Food and Packaging: Blow-off and driving in food processing and packaging machinery to avoid product spoilage caused by moisture.
• Alternative to Refrigerated Air Dryers: An ideal drying solution in places where power supply is unavailable or where vibration/noise sensitivity is a concern.

Summary: The Power-Free, Energy-Saving Core for High-Performance Dry Air
The IDG20V4-03D Polymeric Membrane Air Dryer perfectly addresses the core industrial need for “high-quality dry air sources that are also energy-efficient and compact” through three key technological advantages: power and fluorocarbon-free drying using hollow fiber membrane technology, modular integration with a mist separator and regulator, and high performance achieving a reference dew point of -20°C. Its 250 L/min inlet flow rate suits medium-flow applications, the N.O. auto drain enables maintenance-free operation, and modular connections simplify system integration. Choosing the IDG20V4-03D means equipping your automated equipment with an eco-friendly, energy-efficient, reliably dry, and easily integrated “air drying core”—an ideal choice for achieving high-quality air supply in the semiconductor, electronics, painting, and medical fields.