Key Features and Benefits of ROSS FRL Combination Units

ROSS Controls' FRL combinations distinguish themselves through several critical advantages:

Integrated Modular Design: All ROSS FRL units feature modular construction, allowing customers to mix and match components according to specific application requirements. This flexibility eliminates over-specification while ensuring customers purchase only the functionality they need.

Comprehensive Size Range: ROSS offers FRL combinations spanning from 19 scfm (Bantam and Miniature series) through 495 scfm (High-Capacity series), ensuring coverage for virtually every industrial pneumatic requirement.

Multiple Regulator Types: Engineers can select between piston-type regulators for demanding applications and diaphragm-type regulators for general-purpose use. Both types are available as self-relieving or non-relieving configurations, providing precise pressure control options.

Advanced Filtration Options: All FRL units include filter elements available in 5-micron, 20-micron, and 40-micron ratings, with choices between polyethylene and sintered bronze elements. Automatic drain, manual drain, and external automatic drain options address diverse maintenance preferences and operational scenarios.

Flexible Lubricator Designs: ROSS FRL combinations incorporate either wick-feed or sight-feed lubricators, with adjustable internal oil supplies, allowing precise control of pneumatic system lubrication.

Pressure Monitoring: All units feature integrated pressure gauges with front and rear gauge ports, enabling real-time system monitoring and troubleshooting.

FRL Product Categories: From Bantam to High-Capacity Systems

Bantam Series FRL Combinations

The Bantam Series represents the most compact FRL solution, designed for space-constrained applications. With flow capacities to 23 scfm and port sizes of 1/8" and 1/4", Bantam units incorporate individual filter, regulator, and lubricator components with modular end plates for rapid assembly and reconfiguration.

Miniature Series FRL Units

The Miniature Series maintains the space-efficiency of Bantam designs while providing greater flow capacity (19 scfm maximum). Ideal for smaller pneumatic systems and portable equipment, Miniature FRL combinations feature identical operating characteristics to individual filter, regulator, and lubricator components.

Mid-Size Series FRL Combinations

The Mid-Size Series FRL combinations serve as the workhorse of industrial air preparation, handling flow capacities to 100 scfm. Available with 1/4" through 3/4" port sizes, Mid-Size units provide the balance of performance and economy that makes them the most widely deployed FRL configuration across manufacturing facilities worldwide.

Full-Size Series FRL Systems

The Full-Size Series FRL combinations accommodate flow requirements to 138-140 scfm across all port sizes (1/4" through 3/4"). These units deliver the robustness and reliability required for continuous-duty industrial applications while maintaining modular flexibility.

High-Capacity Series FRL Combinations

The High-Capacity Series represents ROSS's premium FRL offering, achieving flow capacities to 495-270 scfm depending on configuration. These systems are specified for large-scale automation, high-volume production, and applications demanding maximum pneumatic flow.

MD3™ and MD4™ Advanced FRL Platforms

Advanced modular platforms offering integrated filter/regulator designs combined with separate lubricators. The MD3™ supports flows to 110 scfm, while the MD4™ handles flows to 205 scfm, providing superior integration and space savings.

FRL Configuration Options: Filters, Regulators, and Lubricators

Filter and Regulator Combinations (F/R)

Filter and regulator combinations integrate air filtration and pressure regulation while omitting lubrication. This configuration suits applications where pneumatic components require no additional lubrication or where oil-free air is mandatory. All filter/regulator combinations include automatic or manual drain options and pressure gauges.

Filter and Lubricator Units (F/L)

Filter and lubricator combinations provide air filtration and lubrication without regulation. Ideal for applications with regulated supply air, these units ensure contaminant removal and proper component lubrication without duplicating regulation functions already present in the system.

Integrated Filter/Regulator Plus Lubricator Systems

These advanced FRL combinations integrate the filter and regulator into a single body assembly, then couple with a separate lubricator. This design maximizes space efficiency while maintaining complete modularity for filter, regulator, and lubricator adjustments.

Filter, Regulator, and Lubricator Complete Combinations (FRL)

The most comprehensive FRL configuration provides integrated filtration, pressure regulation, and lubrication in a single modular assembly. Complete FRL combinations offer maximum integration while preserving the flexibility to specify alternative regulator types, filter ratings, drain options, and lubricator configurations.

Technical Specifications: Flow Rates, Pressure, and Temperature Ratings

ROSS FRL combinations accommodate compressed air operating pressures from 0 to 200 psig (depending on bowl material and configuration). All units include pressure gauges calibrated for 0-160 psig operation, with gauge ports for system monitoring and diagnostics.

Temperature Operating Ranges vary by bowl material:

• Polycarbonate Bowls: Ambient/Media 40° to 125°F (4° to 52°C)
• Metal/Aluminum Bowls: Ambient/Media 40° to 175°F (4° to 80°C)

Flow Specifications span from 19 scfm (Miniature/Bantam) to 495 scfm (High-Capacity), with pressure drop characteristics optimized to minimize energy consumption while ensuring reliable component operation.

Modular Design and Mounting Options for FRL Systems

All ROSS FRL combinations offer flexible mounting solutions:

• Panel Mounting: Direct-mount configurations with standard 1-3/16" holes for rapid installation
• Modular Mounting: Connector kits join individual components into custom assemblies
• Inline Mounting: Pipe-bracket configurations for wall or equipment mounting
• Base Mounting: Standalone pedestal installations for centralized air preparation

Replacement Parts and Filter Elements for FRL Units

ROSS maintains comprehensive replacement part availability for all FRL combinations. Standard replacement filter elements include:

• 5-µm Standard Element: Polyethylene construction (Model 933K77)
• 5-µm Optional: Sintered bronze (Model R-KA130-27E5)
• 20-µm Optional: Sintered bronze (Model R-KA130-27E4)
• 40-µm Optional: Sintered bronze (Model R-KA130-27E3)

Applications: Industries and Use Cases for FRL Combinations

ROSS FRL combinations serve critical roles across diverse industrial sectors:

Manufacturing and Automation: FRL units provide essential air preparation for automated production lines, robotic systems, and pneumatic actuators throughout manufacturing facilities.

Automotive Industry: Assembly plants, paint systems, and material handling applications depend on reliable FRL combinations for consistent quality and safety.

Food and Beverage Processing: Oil-free and food-safe FRL configurations ensure product integrity while maintaining equipment reliability.

Pharmaceutical Manufacturing: Clean-room compatible FRL systems support sterile process requirements and product quality assurance.

Metalworking and Machine Tools: High-flow FRL combinations power precision machining equipment, ensuring tool longevity and dimensional accuracy.

How to Choose the Right FRL System for Your Pneumatic Application

Step 1: Determine Flow Requirements

Calculate system maximum flow demand by totaling all pneumatic actuator and tool specifications. Add 20-30% safety margin to account for valve losses and future expansion. Match this requirement to appropriate FRL series (Bantam through High-Capacity).

Step 2: Select Regulator Type

Choose between piston regulators for maximum precision and responsiveness (demanding applications) and diaphragm regulators for general-purpose use (most common). Both types offer self-relieving or non-relieving operation.

Step 3: Specify Filter Rating

Select filtration level based on pneumatic component sensitivity:

• 5-micron filters: Precision control valves, small air cylinders
• 20-micron filters: General industrial actuators and tools
• 40-micron filters: Bulk air preparation, pre-filtration stages

Step 4: Configure Drain System

Automatic drain: Continuous condensation removal, minimal operator intervention Manual drain: Lower cost, requires daily operator attention External automatic drain: Remote installation for inaccessible locations

Step 5: Choose Lubricator Type

Sight-feed lubricators: Visual oil level monitoring, adjustable feed rates Wick-feed lubricators: Cost-effective lubrication, fixed feed rates

Pneumatic System Best Practices

Proper FRL combination selection and maintenance are essential to pneumatic system reliability. ROSS Controls recommends regular inspection of pressure gauges, filter condition, and bowl drain systems. Replacement filter elements should be selected based on compressed air quality requirements and downstream component specifications.

FRL Maintenance and Service

Regular maintenance extends FRL combination lifespan and ensures consistent system performance. Automatic drain systems require monthly inspection to verify proper operation. Filter elements should be replaced when pressure drop across the filter exceeds specifications. Lubricator oil levels should be monitored and refilled according to consumption rates.

Industry Standards and Compliance

ROSS FRL combinations are designed and manufactured to comply with applicable pneumatic industry standards including ISO 4401, CETOP standards, and ANSI B11 safety requirements. All pressure-containing components are manufactured from materials suitable for compressed air service.

ROSS Controls Pneumatic System Support

Beyond FRL combinations, ROSS Controls provides comprehensive pneumatic system solutions including directional control valves, flow control valves, pressure relief valves, and advanced safety systems. Our engineering team is available to assist with system design, component selection, and troubleshooting.

Download the FRL Combinations Catalog

This comprehensive catalog includes complete technical specifications, dimensional drawings, flow performance charts, pressure rating information, and model numbering for all ROSS Controls FRL combinations. The document serves as the authoritative reference for air preparation system design and specification across all industries served by ROSS Controls.

Download the PDF: FRL Filter Regulator Lubricator Combinations Catalog

For technical assistance in selecting the optimal FRL combination for your specific application, contact ROSS Controls directly:

• Phone: 1-800-438-7677 (Technical Sales)
• Email: info@rosscontrols.com
• Website: www.rosscontrols.com