WAALPC G Series Air Source Treatment Components – Complete Product Guide

The WAALPC G Series represents a comprehensive family of air source treatment components designed for medium to high-flow industrial pneumatic systems. This modular product line includes individual components — pressure regulators, filters, filter-regulators, and lubricators — as well as pre-assembled F.R.L Two Units and F.R.L Three Units. Engineered with larger port sizes and higher flow capacities than the A/B Series, the G Series is ideal for applications requiring greater air volume and broader system compatibility.

This guide provides a complete technical overview of the G Series, covering each product category with detailed specifications, working principles, key features, and application scenarios.

Part One: GR Series Pressure Regulator (GR200, GR300, GR400 & GR600)

Introduction

In pneumatic systems, maintaining a stable and precise air pressure is crucial for the consistent performance and longevity of downstream components such as cylinders, valves, and actuators. Fluctuations in the supply pressure can lead to inconsistent operation, reduced efficiency, and even equipment damage. The WAALPC GR Series pressure regulators are designed to address this challenge, providing reliable and precise pressure control for medium to high-flow industrial applications.

The GR Series, including models GR200, GR300, GR400, and GR600, is part of WAALPC‘s G Series of air source treatment components. These regulators are engineered to deliver stable output pressure regardless of variations in the inlet pressure, ensuring your pneumatic system operates at peak performance. Each regulator is equipped with a pressure gauge port for easy monitoring of output pressure.

Model Nomenclature

The GR Series model code follows a systematic structure:

Working Principle

The GR Series regulators operate on the diaphragm force-balance principle — a tried-and-tested mechanism used in countless pneumatic systems for its reliability and accuracy.

1. Pressure Setting: Turning the adjustment knob compresses a set spring, which applies a downward force on a diaphragm.

2. Valve Operation: This force pushes a valve stem, opening the valve port and allowing compressed air to flow from the inlet to the outlet.

3. Pressure Feedback: The outlet pressure is channeled back to the underside of the diaphragm, creating an upward force that opposes the spring force.

4. Dynamic Balance: The valve automatically adjusts its opening to maintain a balance between the spring force and the outlet pressure. If the outlet pressure drops, the valve opens wider; if it rises, the valve closes slightly, ensuring a constant output pressure.

Key Features & Benefits

• Higher Flow Capacity: Designed for medium to high-flow applications, the GR Series handles larger air volumes than the A/B Series.

• Multiple Port Sizes: Available in G1/4, G3/8, G1/2, and G3/4 to match various system requirements.

• Press-in Self-locking Mechanism: Prevents the set pressure from being accidentally altered due to external interference or vibration, ensuring consistent system operation.

• Low Pressure Loss: The internal design minimizes pressure drop, ensuring efficient use of your compressed air supply.

• High Efficiency Water Separation: The integrated water separator effectively removes condensate from the air stream, protecting downstream components from moisture damage.

• Pressure Gauge Port: Each regulator is equipped with a pressure gauge port for convenient monitoring of output pressure.

• Transparent Bowl: Allows for quick visual checks of the filter element and condensate level (on models with filter bowl).

Technical Specifications

Application Scenarios

GR Series regulators are used across a wide range of industries:

• Industrial Automation: Large assembly lines, packaging machinery, and robotic systems

• Manufacturing: Machine tools, textile machinery, and printing equipment

• Process Industries: Food processing, pharmaceutical manufacturing, and chemical plants

• Specialized Applications: Automotive assembly, electronics manufacturing, and material handling

Part Two: GFR Series Filter-Regulator (GFR200, GFR300, GFR400 & GFR600)

Introduction

The WAALPC GFR Series represents the next step in air preparation, combining the functions of a high-efficiency filter and a precision pressure regulator into one compact unit. By removing contaminants and stabilizing pressure in a single device, the GFR200, GFR300, GFR400, and GFR600 offer an efficient solution for protecting sensitive pneumatic equipment in medium to high-flow applications.

These units are ideal for applications where space is at a premium or where a simpler, two-component system is desired. Each unit is equipped with a pressure gauge port for convenient monitoring of output pressure.

Model Nomenclature

Design & Working Principle

The GFR Series integrates two critical functions:

Filtration Stage: Compressed air enters the unit and is first subjected to a centrifugal separation process that removes bulk water and large particles. It then passes through a filter element to capture finer contaminants like dust, rust, and oil aerosols. WAALPC offers filter elements in 5μm, 25μm, or 40μm grades to meet varying levels of required air purity. The filtered condensate collects in a transparent bowl for easy monitoring and drainage.

Regulation Stage: After filtration, the clean air passes through a pressure regulator that operates on the same proven diaphragm force-balance principle as the GR Series. This ensures a stable, preset output pressure is delivered to the system, regardless of fluctuations in the supply pressure.

Key Features & Benefits

• Two-in-One Functionality: Combines filtration and pressure regulation, saving space and simplifying installation.

• Higher Flow Capacity: Designed for medium to high-flow applications, the GFR Series handles larger air volumes.

• Multiple Port Sizes: Available in G1/4, G3/8, G1/2, and G3/4 to match various system requirements.

• High-Efficiency Water Separation: Effective at removing moisture from the air, protecting downstream components.

• Press-in Self-locking Knob: Prevents accidental pressure adjustments, ensuring consistent operation.

• Transparent Bowl: Allows for quick visual checks of the filter element and condensate level.

• Flexible Filtration Options: Available with 5μm, 25μm, or 40μm filter elements to suit different application requirements.

• Pressure Gauge Port: Each unit is equipped with a pressure gauge port for easy monitoring of output pressure.

Technical Specifications

Application Scenarios

GFR Series filter-regulators are widely used in:

• Precision Manufacturing: Electronics assembly, semiconductor equipment, and instrument manufacturing

• Industrial Automation: Automated assembly lines, pick-and-place machines, and packaging systems

• Process Industries: Food and beverage production, pharmaceutical filling lines, and chemical processing

• General Industry: Machine tools, printing presses, and textile machinery

Part Three: GF Series Compressed Air Filter (GF200, GF300, GF400 & GF600)

Introduction

Clean, dry air is the lifeblood of any pneumatic system. Moisture, dust, and oil aerosols are the primary culprits behind premature wear, corrosion, and malfunction of valves, cylinders, and other components. The WAALPC GF Series filters are the first line of defense, designed to remove these harmful contaminants from your compressed air supply.

The GF200, GF300, GF400, and GF600 filters provide a highly effective solution for ensuring air quality in medium to high-flow systems, thereby extending the service life and reliability of your entire pneumatic system.

Model Nomenclature

How It Works

The GF Series filters use a combination of mechanical separation and filtration to purify compressed air:

Centrifugal Separation: Incoming air is directed into the filter bowl tangentially, creating a high-speed spinning motion. This centrifugal force throws heavier water droplets and larger solid particles against the bowl‘s inner wall, where they collect at the bottom.

Filtration: After the initial separation, the air passes through a filter element. This element traps finer particles, including dust, rust, and oil aerosols. WAALPC offers filter elements in 5μm, 25μm, and 40μm grades to meet varying levels of required air purity.

Condensate Drainage: The collected water and contaminants are removed from the system via a drain valve. The bowl is transparent, allowing for easy visual inspection of the condensate level.

Key Features & Benefits

• Higher Flow Capacity: Designed for medium to high-flow applications, the GF Series handles larger air volumes.

• Multiple Port Sizes: Available in G1/4, G3/8, G1/2, and G3/4 to match various system requirements.

• Efficient Contaminant Removal: Effectively removes moisture, oil, and solid particles, safeguarding your equipment.

• Multiple Filtration Grades: Choose from 5μm, 25μm, or 40μm elements to match your application‘s cleanliness requirements.

• Transparent Bowl: The clear bowl design allows for easy, at-a-glance monitoring of the filter element’s condition and the level of collected condensate.

• Compact and Lightweight: The die-cast aluminum housing ensures a robust yet compact design, making it easy to install in tight spaces.

• Reliable Performance: Designed for continuous operation, the GF Series provides consistent air quality to protect your downstream equipment.

Technical Specifications

Application Scenarios

GF Series filters are used in:

• General Manufacturing: Preparing compressed air for plant-wide distribution

• Automotive Industry: Air supply for assembly tools and paint lines

• Electronics Manufacturing: Clean, dry air for sensitive component handling

• Marine and Offshore: Removing moisture from air systems on ships and platforms

Part Four: GL Series Oil Mist Lubricator (GL200, GL300, GL400 & GL600)

Introduction

While filtration and regulation ensure clean, stable air, many pneumatic components require lubrication to minimize friction, reduce wear, and ensure smooth operation. The WAALPC GL Series oil mist lubricators provide this essential function by introducing a controlled amount of atomized oil into the compressed air stream.

The GL200, GL300, GL400, and GL600 lubricators are designed to deliver a precise oil mist to downstream tools, cylinders, and valves in medium to high-flow systems, significantly extending their operational life.

Model Nomenclature

Operating Principle

The GL Series operates on the Venturi (aspiration) principle — a simple yet highly effective method for oil atomization:

1. Pressure Drop: Compressed air passes through a nozzle in the lubricator, creating a high-velocity air stream and a localized pressure drop.

2. Oil Lift: This pressure drop creates a suction effect that draws oil from the reservoir through a pickup tube.

3. Oil Atomization: The oil is then metered by an adjustable needle valve and introduced into the high-velocity air stream, where it is sheared into a fine mist.

4. Delivery: The resulting oil mist is carried by the compressed air downstream, where it lubricates moving parts.

Key Features & Benefits

• Higher Flow Capacity: Designed for medium to high-flow applications, the GL Series handles larger air volumes.

• Multiple Port Sizes: Available in G1/4, G3/8, G1/2, and G3/4 to match various system requirements.

• Effective Lubrication: Provides a consistent oil mist, reducing friction and wear on downstream pneumatic components.

• Adjustable Oil Feed: A needle valve allows you to precisely control the oil droplet rate, ensuring the right amount of lubrication for your specific application.

• Transparent Bowl: The clear oil reservoir allows for easy monitoring of the oil level, preventing dry operation.

• Recommended Oil: For optimal performance and longevity, WAALPC recommends using ISO VG32 or equivalent oil.

Technical Specifications

Application Scenarios

GL Series lubricators are used in:

• Automated Assembly Lines: Lubricating cylinders, grippers, and rotary actuators

• Pneumatic Tooling: Air tools such as wrenches, grinders, and impact drivers

• Packaging Machinery: Lubricating sealing heads, cutters, and material handling devices

• Textile Machinery: Lubricating pneumatic thread tensioning and fabric handling systems

Part Five: GFC Series F.R.L Two Units (GFC200, GFC300, GFC400 & GFC600)

Introduction

For a streamlined and space-saving solution, the WAALPC GFC Series (F.R.L Two Units) combines a filter-regulator and a lubricator into one compact unit. This configuration is ideal for medium to high-flow applications requiring both conditioned, regulated air and lubrication, but where space is at a premium.

The GFC200, GFC300, GFC400, and GFC600 provide an efficient, modular approach to air preparation, simplifying installation and maintenance.

Model Nomenclature

Integrated Design

The GFC Series is a modular assembly that brings together two critical components:

Filter-Regulator Module: This performs the dual function of filtering out contaminants and regulating the air pressure to a stable, pre-set level. It is equipped with a pressure gauge port for monitoring output pressure.

Lubricator Module: This adds a controlled amount of atomized oil to the air stream for downstream component lubrication.

By integrating these functions, the GFC Series eliminates the need for separate units and the associated piping, saving valuable space and reducing potential leak points.

Key Features & Benefits

• Higher Flow Capacity: Designed for medium to high-flow applications, the GFC Series handles larger air volumes.

• Multiple Port Sizes: Available in G1/4, G3/8, G1/2, and G3/4 to match various system requirements.

• Space-Saving Design: Combines two essential functions in one assembly, ideal for compact machinery.

• Simplified Installation: Reduces piping complexity and installation time.

• Complete Air Preparation: Provides filtration, regulation, and lubrication in a single, convenient package.

• Modularity: Allows for easy maintenance and replacement of individual components.

• Reliable Performance: Built with the same high-quality materials and engineering as the individual components.

• Pressure Gauge Port: The filter-regulator module includes a pressure gauge port for convenient monitoring.

Technical Specifications

Application Scenarios

GFC Series F.R.L Two Units are widely used in:

• Compact Machinery: Where space constraints prevent installation of three separate units

• Maintenance Shops: Portable air supply systems for tools and equipment

• General Automation: Systems requiring both lubrication and regulated pressure without the need for an upstream filter (as it is integrated)

• Retrofit Applications: Replacing older, larger air preparation setups

Part Six: GC Series F.R.L Three Units (GC200, GC300, GC400 & GC600)

Introduction

The WAALPC GC Series (F.R.L Three Units) represents the most comprehensive air preparation solution in the G Series, combining a filter, a regulator, and a lubricator into a single, unified assembly. This configuration provides the complete spectrum of air treatment — filtration, pressure regulation, and lubrication — ensuring your pneumatic system operates at its best.

The GC200, GC300, GC400, and GC600 are the ultimate choice for protecting and optimizing the performance of your most critical pneumatic equipment in medium to high-flow applications.

Model Nomenclature

Comprehensive Air Preparation

The GC Series integrates three essential modules into one, providing a turnkey solution for air preparation:

Filter: Removes solid particles, moisture, and oil aerosols from the compressed air.

Regulator: Maintains a stable, pre-set output pressure, protecting components from pressure fluctuations. Equipped with a pressure gauge port for monitoring.

Lubricator: Adds a controlled mist of oil to the air to lubricate moving parts and reduce wear.

This all-in-one design simplifies system design, reduces installation time, and ensures all three functions work in perfect harmony.

Key Features & Benefits

• Complete Air Preparation: Delivers clean, regulated, and lubricated air for maximum system protection and performance.

• Higher Flow Capacity: Designed for medium to high-flow applications, the GC Series handles larger air volumes.

• Multiple Port Sizes: Available in G1/4, G3/8, G1/2, and G3/4 to match various system requirements.

• Modular Design: The three-unit assembly is easy to install and maintain, with individual components that can be serviced or replaced as needed.

• Space Efficient: Combines three separate functions into a single, compact unit, saving valuable space.

• Proven Reliability: Built with the same robust materials and precision engineering as the individual components.

• Pressure Gauge Port: The regulator module includes a pressure gauge port for convenient monitoring of output pressure.

• Wide Application: Ideal for a vast range of industrial applications, from manufacturing and automation to packaging and material handling.

Technical Specifications

Application Scenarios

GC Series F.R.L Three Units are used in:

• Industrial Manufacturing: Primary air preparation for factory-wide pneumatic systems

• Automated Production Lines: Providing clean, regulated, lubricated air to multiple workstations

• Packaging Facilities: Air supply for sealing machines, conveyors, and labeling equipment

• Material Handling Systems: Pneumatic grippers, lifts, and transfer systems

• Food and Beverage Processing: Air preparation (with appropriate filter grades) for packaging and filling equipment

• Pharmaceutical Manufacturing: Clean, regulated air for filling, sealing, and labeling machinery

Conclusion

The WAALPC G Series air source treatment components provide a complete, modular solution for preparing compressed air in medium to high-flow industrial pneumatic systems. From individual components — pressure regulators, filters, filter-regulators, and lubricators — to fully integrated F.R.L Two Units and F.R.L Three Units, the G Series offers the flexibility to meet the specific requirements of any application.

Key takeaways:

• GR Series: Pressure regulators for precise, stable pressure control with pressure gauge port

• GFR Series: Combined filter-regulators for space-saving air preparation with pressure gauge port

• GF Series: High-efficiency filters for contaminant removal with multiple filtration grades

• GL Series: Oil mist lubricators for component protection and reduced wear

• GFC Series: F.R.L Two Units (filter-regulator + lubricator) for space-saving solutions

• GC Series: F.R.L Three Units (filter + regulator + lubricator) for complete air preparation

All models feature durable aluminum die-cast construction, transparent bowls for easy monitoring, and a wide operating temperature range of 5–60°C. With port sizes from G1/4 to G3/4, filtration grades of 5μm, 25μm, or 40μm, and a standard pressure range of 0.05–0.85 MPa, the G Series provides a reliable, long-lasting solution for pneumatic air preparation across virtually every industry.

For more information about WAALPC G Series air source treatment components or to discuss your specific application requirements, please contact our technical sales team or visit www.waalpc.com.