Pneumatic FRL Unit — Clean, Stable, and Lubricated Air Supply Assurance

The pneumatic FRL unit (Filter–Regulator–Lubricator) is the golden combination for final air treatment in pneumatic systems. It provides downstream actuators—such as cylinders, valves, and pneumatic tools—with a high-quality air supply that is “clean, stable, and lubricated.”

The filter removes condensate, solid particles, and oil mist impurities from compressed air; the regulator stabilizes the input pressure at a set value to ensure consistent system pressure; and the lubricator atomizes lubricating oil and evenly injects it into the airflow, enabling precise lubrication and significantly extending component lifespan.

The FRL series offered by fokca.com integrates modular design with advanced manufacturing processes, featuring the following advantages:

◆ Efficient Filtration & Separation: Utilizes vortex centrifugal separation technology. Standard 5μm/40μm filter elements are provided, with higher precision options available for effective impurity interception.

◆ Precise Pressure Regulation: Balanced valve core structure ensures stable output pressure with fluctuation ≤ ±0.05 MPa. The knob features a self-locking function to prevent accidental operation.

◆ Smart Lubrication: Equipped with a visible oil drip window and precision needle valve for fine oil adjustment. Supports refilling without shutting down, ensuring continuous production.

◆ Flexible Drainage Options: Available in manual, differential-pressure semi-automatic, and float-type fully automatic drainage modes to meet various working conditions.

◆ Modular Expansion: Can be freely combined with filter regulators or standalone lubricators for easy installation and maintenance.

◆ Full Brand Coverage: Compatible with mainstream brands such as FESTO, SMC, and Airtac, enabling one-stop procurement.

FAQ

Q1: Do all three components of the FRL unit have to be used together?

A1: Not necessarily. If downstream components do not require lubrication (e.g., some oil-free cylinders), a filter regulator (FR) is sufficient. If the air source is already clean, a regulator + lubricator may be used. The FRL unit represents a “complete configuration,” but it can be flexibly arranged according to actual needs.

Q2: How often should the lubricator be refilled?
A2: It depends on the oil consumption setting and reservoir capacity. It is recommended to establish routine inspections and refill when the oil level drops below one-third. Our lubricator supports refilling without depressurization, eliminating the need for shutdown.

Q3: How can I tell when the filter element needs replacement?
A3: Replace it when any of the following occurs:
① Significant pressure drop (reduced flow rate);
② Visible contaminants on the inner wall of the bowl;
③ Exceeding the recommended service interval (typically 6–12 months).

Q4: How is the required flow rate calculated during selection?
A4: Calculate the total air consumption of all components that may operate simultaneously, then multiply by a safety factor of 1.2–1.5. You may also contact our technical support for selection assistance.