AF30-03D-8-A: Modular Air Filter – High-Visibility, Large-Flow Air Source Purification Expert

Product Positioning
The AF30-03D-8-A is a modular air filter from SMC’s AF-D series, serving as a core filtration component in F.R.L. units. Its main function is to remove solid impurities, water droplets, and oil mist from compressed air, providing clean air sources for downstream pneumatic components. With its core advantages of large flow capacity, high visibility, and easy maintenance, it is widely used in packaging machinery, assembly lines, electronics processing, and various industrial automation applications requiring reliable air source purification.

Core Highlights: Automatic Drain, Metal Bowl, Easy Maintenance

• Large Flow Capacity for Most Pneumatic Systems
  • Body size: 30; Port size: 3/8 inch; Rated flow: up to 3600 L/min (ANR).
  • Can meet the air supply demands of multiple machines or high air consumption equipment.
• Automatic Drain Valve (Normally Open) – Maintenance-Free
  • The “D” in the model denotes a float-type automatic drain valve (N.O. type), meaning the drain port is open when no pressure is applied and closes when pressurized, automatically discharging accumulated condensate.
  • Eliminates the need for manual condensate draining, significantly reducing maintenance workload and improving equipment operation efficiency.
• Metal Bowl with Sight Gauge – Durable & Visible
  • The “-8” in the model represents a metal bowl with a sight gauge.
  • Compared to polycarbonate bowls, the metal bowl offers higher pressure resistance and chemical resistance, suitable for harsher industrial environments.
  • The side-mounted sight gauge allows intuitive monitoring of condensate accumulation for timely attention.
• High-Precision Filtration
  • Filtration rating: 5μm, effectively removing solid particles and some oil mist from compressed air, protecting downstream precision components.
• Modular Design for Flexible Installation
  • Modular connection allows free combination with other components from the same series, such as regulators (AR) and lubricators (AL), forming a complete F.R.L. unit and simplifying piping layout.

Model Number Breakdown

Specifications Overview

Features

Application Scenarios

• General Automation Equipment: Air source purification for packaging machines, assembly lines, material handling, electronics processing, etc.
• Unmanned or Hard-to-Reach Equipment: Auto drain reduces maintenance tasks.
• Applications Requiring Metal Bowls: Suitable for industrial environments with higher demands for pressure resistance and chemical resistance.
• High Flow Demand Equipment: Rated flow 3600 L/min meets the needs of multiple machines or high air consumption equipment.

Summary: High-Visibility, Large-Flow Air Source Purification Core
The AF30-03D-8-A modular air filter perfectly addresses the core requirement in pneumatic systems – “needing efficient filtration with durability and ease of maintenance” – through its three core advantages: 3600 L/min large flow capacity, maintenance-free auto drain, and metal bowl with sight gauge. The integrated filter element and bowl design significantly improves maintenance convenience. The 5μm filtration rating effectively protects downstream components, and the modular design simplifies system integration. Choosing the AF30-03D-8-A means equipping your automation equipment with an efficient, durable, and easily maintainable “air source purification core,” a foundational choice for ensuring stable operation of downstream pneumatic components and enhancing overall equipment reliability.