High-Capacity Series Port Sizes 3/4" to 1"; Flow to 270 scfm (7646 l/min)

Product Overview

The ROSS Controls Full-Size Filter/Regulator is a modular-mount integrated air preparation unit combining filtration and pressure regulation for pneumatic systems with port sizes from 1/4" to 3/4" and flow requirements to 138 scfm (3906 l/min). The modular mounting construction enables the series to be assembled into complete FRL trains alongside ROSS lubricators and individual filter units, creating a compact multi-function air preparation assembly with minimal plumbing.

A piston-type regulator delivers outlet pressure adjustable to 125 psig (9 bar), providing stable regulated pressure across the full flow range. The higher outlet pressure capability compared to smaller-series units makes the series suitable for pneumatic applications requiring pressures above 100 psig, including clamping, pressing, and high-force actuation circuits. The 8-oz (240 ml) bowl capacity accommodates the higher condensate volumes associated with 3/4" port pneumatic circuits and extended production run requirements.

Bowl options include a polycarbonate plastic bowl with steel shatterguard for visual condensate monitoring in standard environments, and a zinc bowl with clear nylon sight glass for installations requiring higher maximum pressure capability (200 psig) or better chemical resistance. Both automatic drain and manual drain configurations are available. A pressure adjustment locking key is provided to prevent unauthorized pressure changes, supporting process consistency and safety in shared equipment environments.

The Series serves a broad range of industrial pneumatic applications including machine tool main air supplies, heavy automation equipment, large-diameter pneumatic cylinder circuits, and production lines where 3/4" or smaller port connections and 138 scfm flow capacity match primary circuit requirements.

Key Engineering Features

• Modular Mounting with FRL Compatibility - Assembles into complete FRL trains with ROSS lubricators and filter units using modular interface connections, eliminating intermediate pipe connections and reducing overall assembly length and leak points.
• Piston-Type Regulator to 125 psig (9 bar) - Higher outlet pressure range than smaller-series units supports clamping, pressing, and high-force pneumatic circuits in addition to standard actuation applications requiring regulated pressures up to 125 psig.
• Polycarbonate Bowl with Steel Shatterguard - Transparent polycarbonate bowl allows continuous visual inspection of condensate level and element condition; steel shatterguard contains fragments in the event of bowl failure, a safety requirement in many industrial codes.
• Zinc Bowl with Clear Nylon Sight Glass - Metal zinc bowl rated to 200 psig maximum operating pressure with elevated temperature capability to 175 degrees F (80 degrees C). Clear nylon sight glass provides condensate level visibility in the metal bowl variant.
• Pressure Adjustment Locking Key - Removable locking key prevents unauthorized adjustment of the regulated outlet pressure setting, supporting process control requirements in applications where pressure set points must remain fixed during production.
• 8-oz (240 ml) Bowl Capacity - Larger bowl volume than mid-size series units reduces condensate drain frequency for high-flow circuits and long production shift operations at 3/4" and larger port sizes.
• Automatic or Manual Drain - Automatic drain removes condensate without operator intervention; manual drain supports controlled condensate removal for periodic maintenance or contamination monitoring programs.
• Full Port Size Range 1/4" to 3/4" - Covers the complete range of standard industrial pneumatic connections from instrument-size 1/4" to the 3/4" porting common in high-flow machine tool and assembly automation main supply circuits.
• NPT and G (BSPP) Thread Options - Available in NPT for North American installations and G (BSPP) for international markets. G thread models ordered by adding a C prefix to the model number.
• External Automatic Drain Option - An optional external automatic drain is available for applications where the standard internal drain is not suitable, allowing remote condensate discharge to a central drain collection system.

Technical Specifications

General Specifications

Certifications & Compliance

Typical Applications & Industries

Heavy Industrial Automation

• Main pneumatic supply air preparation for large automated assembly systems with multiple downstream actuators requiring 3/4" port connections and flow rates approaching 138 scfm, where the modular FRL train consolidates filtration, regulation, and lubrication in one compact assembly.
• Heavy-duty pneumatic cylinder circuits in stamping, pressing, and forming equipment where regulated pressures to 125 psig provide the high actuation forces required by clamping and holding fixtures.
• Pneumatic power supply to large-bore rodless cylinders, guided slides, and pneumatic rotary actuators where full-size port connections and high flow capacity are essential for acceptable cycle time performance.
• Transfer automation and gantry system air preparation where the full-size FRL assembly is mounted in the control enclosure, providing point-of-system air conditioning before distribution to multiple actuators.

Machine Tool and Manufacturing

• Machine tool main air preparation supplying coolant blow-off circuits, spindle air purge, workholding pneumatics, and tool change actuators from a single high-capacity modular FRL assembly at 3/4" port sizes.
• Machining center and turning center air preparation where the locking key prevents adjustment of regulated pressure settings between shifts, ensuring consistent workholding force and spindle purge pressure throughout production.
• Large-bore hydraulic/pneumatic press air pilot circuits where the 125 psig regulated outlet pressure supports high-force safety and clamping circuits in dual-pressure pneumatic systems.
• Automated welding systems requiring clean, regulated air for torch cooling air circuits, pneumatic positioner actuators, and part clamping fixtures.

Automotive Manufacturing

• Body shop assembly tooling air preparation where high-cycle pneumatic fixtures, nut runners, and riveting tools require clean regulated air at 3/4" supply connections throughout the assembly cell.
• Paint shop air preparation for pneumatic conveyor drives, door opening actuators, and part positioning fixtures in paint booth environments where condensate-free air prevents paint defects.
• Engine assembly line air preparation for torque tooling, press-fit stations, and assembly fixtures requiring consistent regulated pressure and filtration across high-volume production shifts.

Food and Beverage and Pharmaceutical

• Process air preparation for filling, capping, and packaging lines where the large bowl capacity reduces maintenance frequency during extended production runs and the metal bowl option withstands CIP cleaning chemical exposure.
• Pneumatic actuator supply in pharmaceutical tableting, capsule filling, and blister packaging equipment where precise pressure regulation maintains consistent actuation force and the filter element protects product-contact air circuits from particulate contamination.
• Beverage line air preparation supplying multiple downstream pneumatic valves and actuators from a central modular FRL assembly with external drain connection for central condensate collection.

Ordering and Model Number Configuration

The Series model number encodes bowl type, drain type, and port size. Select from the model number table above or contact ROSS Controls for assistance with modular assembly configurations.

For G (BSPP) threads, add the prefix C to the model number (e.g., C5321B5072 for 3/4 G, polycarbonate bowl, automatic drain).

Polycarbonate bowl models begin with 5321; zinc (metal) bowl models begin with 5322.

Automatic drain variants end in 72 or 71; manual drain variants end in 12 or 11.

An external automatic drain option is available; contact ROSS Controls for the external drain model number designation.

Contact ROSS Controls at (800) 438-7677 for modular assembly configurations or for replacement element selection assistance.

Accessories

Replacement Filter Elements

Standard 5-micron polyethylene element (939K77) and optional sintered bronze elements in 5-, 20-, and 40-micron ratings are available for the Full-Size Series.

External Automatic Drain

An external automatic drain option is available for the series for applications where remote condensate discharge is preferred. Refer to ROSS Controls accessories catalog page G6.7 or contact ROSS Controls for the external drain model number and installation specifications.

Modular Lubricator and Filter Add-Ons

The Series supports modular assembly with ROSS full-size lubricators and individual filter units. Contact ROSS Controls for modular interface hardware model numbers and complete FRL assembly configurations.

Related Products & Accessories

• 132 Mid-Size Series Integrated Filter/Regulator - Modular-mount integrated FR for port sizes 1/4" to 1/2" with flow to 100 scfm and piston-type regulator. https://www.rosscontrols.com/en/series/132-mid-size-series
• 134 High-Capacity Series Integrated Filter/Regulator - Inline-mount integrated FR for port sizes 3/4" to 1" with flow to 270 scfm for the highest flow demands. https://www.rosscontrols.com/en/series/134-high-capacity-series
• 74 Full-Size Integrated Filter/Regulator - Alternative full-size integrated FR with tamper-resistant locking key, piston or non-relieving regulator, flow to 180 scfm. https://www.rosscontrols.com/en/series/74-full-size-series
• MD4 Series Integrated Filter/Regulator - Full-size modular integrated FR with diaphragm regulator, L-O-X lockout valve option, flow to 230 scfm. https://www.rosscontrols.com/en/series/75-md4-series
• ROSS FRL Lubricators - Full-size modular lubricators for assembly with the series into complete FRL trains. https://www.rosscontrols.com/en/categories/lubricators

Frequently Asked Questions (FAQ)

Q: What is the maximum flow capacity of the Full-Size Series?

A: The Full-Size Series is rated for flow to 138 scfm (3906 l/min) at 3/4" port connections. This capacity supports the main air supply requirements of most industrial machine tools, large automation cells, and production line main drops. For flow requirements above 138 scfm, the 134 High-Capacity Series (to 270 scfm) should be considered.

Q: What port sizes are available?

A: The Series is available in 1/4 inch, 3/8 inch, 1/2 inch, and 3/4 inch port sizes in both NPT and G (BSPP) thread types. G thread models are ordered by adding the prefix C to the NPT model number.

Q: What is the maximum outlet pressure?

A: The piston-type regulator provides outlet pressure adjustable up to 125 psig (9 bar). This higher range compared to smaller series units accommodates clamping, pressing, and high-force pneumatic circuits that require operating pressures above 100 psig.

Q: What does the pressure adjustment locking key do?

A: The removable locking key prevents unauthorized changes to the regulated outlet pressure setting. Once the set point is established, the key can be removed, locking the adjustment mechanism. This is valuable in production environments where consistent actuator force or pressure is critical to product quality or process repeatability.

Q: What bowl options are available and how do I choose?

A: The polycarbonate bowl with steel shatterguard provides visual condensate inspection and is rated to 150 psig operating pressure with a temperature range to 125 degrees F (52 degrees C). The zinc bowl with clear nylon sight glass extends the maximum operating pressure to 200 psig and the upper temperature limit to 175 degrees F (80 degrees C), and provides better chemical resistance. Choose the zinc bowl for high-pressure or high-temperature environments, or wherever chemical exposure is a concern.

Q: Is an external drain option available?

A: Yes. An external automatic drain option is available for the series for applications where the internal drain is not practical or where remote condensate collection is preferred. Contact ROSS Controls for the external drain model number and configuration details.

Q: What filter element is standard?

A: The standard element is a 5-micron rated polyethylene element (model 939K77). Optional sintered bronze elements in 5-micron (R-KA103-03E5), 20-micron (R-KA103-03E4), and 40-micron (R-KA103-03E3) ratings are available. Sintered bronze elements are more durable and appropriate for high-condensate or abrasive contamination environments.

Q: Can the series be panel mounted?

A: Yes. Panel mounting requires a 2-1/16 inch (52 mm) diameter hole. Allow adequate clearance below the unit for bowl removal during element replacement and maintenance.

Q: What is the bowl capacity?

A: The Full-Size Series uses an 8-oz (240 ml) bowl, providing significantly more condensate storage than mid-size or miniature series units and reducing maintenance drain frequency in high-flow circuit installations.

Q: How does modular mounting work with lubricators and filters?

A: The Series modular mounting interface allows direct connection to compatible ROSS full-size lubricators and individual filter units using modular mounting hardware, creating a complete FRL assembly without intermediate pipe connections. Contact ROSS Controls for specific modular assembly model numbers and hardware specifications.

Q: What are the temperature limits?

A: Polycarbonate bowl models are rated from 40 to 125 degrees F (4 to 52 degrees C). Zinc bowl models are rated from 40 to 175 degrees F (4 to 80 degrees C) for both ambient and media temperature, making them suitable for warmer industrial environments or process air applications.

Q: What is the warranty?

A: ROSS Controls provides a one-year warranty on all products covering defects in material and workmanship from the date of purchase. Contact ROSS Controls USA at (800) 438-7677 for technical support or warranty service.

Installation & Maintenance Guidelines

• Mount with the bowl oriented downward to allow gravity-assisted condensate collection for proper drain operation.
• Provide adequate clearance below the bowl for removal during filter element replacement and condensate drain maintenance; bowl removal requires at least 3.1 inches (79 mm) below the unit.
• Do not exceed 150 psig with polycarbonate bowl models or 200 psig with zinc bowl models.
• Protect polycarbonate bowls from contact with solvents, ketones, esters, and chlorinated compounds. Use zinc bowl models in chemically aggressive environments.
• For automatic drain models, ensure the drain outlet is not obstructed or subjected to back pressure that would prevent condensate discharge.
• For manual drain models, drain condensate regularly based on system humidity levels and observed condensate accumulation rates.
• Set the regulated outlet pressure before system startup. Remove the locking key after setting the pressure to prevent inadvertent adjustment.
• Use thread sealant or PTFE tape on NPT connections; apply sparingly to prevent material from entering the air circuit.
• Replace the filter element when pressure drop across the unit increases beyond acceptable limits or on a scheduled maintenance interval.
• When assembling as part of a modular FRL train, verify that all modular interface connections are properly sealed before pressurizing the system.

Warranty & Global Support

ROSS Controls provides a one-year warranty on all products, covering defects in material and workmanship from the date of purchase.

Global technical support is available through ROSS offices in the USA (headquarters in Ferndale, Michigan), Canada, Brazil, Germany, France, United Kingdom, India, China, and Japan.

Contact ROSS Controls USA at (800) 438-7677 or visit rosscontrols.com for product configuration, technical support, and distributor locator services.

For complete technical data, dimensional drawings, and product configurator access, visit the ROSS Controls Full-Size Series product page or contact ROSS Controls directly.

Download Catalog: https://www.rosscontrols.com/en/series/133-full-size-series