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Festo Modular Compressed Air Filter/Regulator/Lubricators (FRLs)


Made up of a Festo filter, regulator, and lubricator, these FRLs provide clean, lubricated air at your required pressure. They connect to other Festo units of the same series with joiner clamps (sold separately)—even if the pipe sizes are slightly different—so you can customize your air preparation system. The regulator is relieving, so it exhausts when the downstream pressure exceeds the set pressure. Slip a padlock through a hole in the knob to prevent unwanted pressure changes. Add a safety lockout valve to prevent accidental start-ups during maintenance and comply with OSHA lockout/tagout regulations.
Inline FRLs are the standard design. Each part can be replaced or repaired on its own, which reduces maintenance costs. Stacked FRLs have a filter and regulator joined top-to-bottom and a lubricator on the side. They require less horizontal space than inline FRLs.
Joiner clamps (sold separately) create compact, airtight connections between components that are easy to swap out. They come with mounting brackets to attach FRLs to a wall or equipment.
End block sets (sold separately) allow you to swap out filter/regulator/lubricator components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them.
Filter/Regulator/Lubricators (FRLs) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | End Block Sets | |||||||||||
| Manufacturer Series | Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Removes Particle Size Down To, microns | Pressure Regulating Range, psi | Ht. | Wd. | Each | Each | Each | |||
Inline with Clear Polycarbonate Plastic Bowl and Automatic Drain | ||||||||||||||
| MS4 | 1/4 | 1/4 | 65 scfm @ 100 psi | 176 | 5 | 22-174 | 8" | 4 3/4" | 0000000 | 0000000 | 0000000 | 000000 | 0000000 | 000000 |
| MS4 | 3/8 | 3/8 | 65 scfm @ 100 psi | 176 | 5 | 22-174 | 8" | 4 3/4" | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
Stacked with Clear Polycarbonate Plastic Bowl and Automatic Drain | ||||||||||||||
| MS4 | 1/4 | 1/4 | 65 scfm @ 100 psi | 176 | 5 | 22-174 | 8" | 3 1/4" | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
| MS4 | 3/8 | 3/8 | 65 scfm @ 100 psi | 176 | 5 | 22-174 | 8" | 3 1/8" | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
Safety Lockout Valves for Festo Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)


Prevent accidental start-ups while you service air preparation equipment. These lockout valves exhaust downstream pressure and can be locked in the shut-off position using a padlock. They help you comply with OSHA regulations for lockout/tagout procedures.
Joiner clamps (sold separately) connect these valves to another Festo modular unit with the same series number. They create compact, airtight connections that are easy to swap out. These clamps come with mounting brackets to attach the valve to a wall or equipment.
Valves | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | |||||||||||
| Manufacturer Series | Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Locking Mechanism Color | Ht. | Wd. | Features | Each | Each | ||
NPT Female Inlet and Outlet | |||||||||||||
For Series No. 4 | |||||||||||||
| MS4 | 1/4 | 1/4 | 65 scfm @ 100 psi | 206 | 140° | Blue | 6" | 1 5/8" | Silencer | 0000000 | 000000 | 0000000 | 000000 |
| MS4 | 3/8 | 3/8 | 65 scfm @ 100 psi | 206 | 140° | Blue | 6" | 2" | Silencer | 0000000 | 00000 | 0000000 | 00000 |
Joiner Clamps for Festo Modular Compressed
Air Filter/Regulator/Lubricators (FRLs)


with Mounting
Bracket
Connect Festo modular filter/regulator/lubricator components with the same series number. Even with slight differences in inlet sizes or thread types, these joiner clamps connect without air leaks. Check the manufacturer series on your Festo components to ensure compatibility.
Joiner clamps with a mounting bracket secure components to each other and to a wall or equipment.
Festo Modular Compressed Air Filter/Regulators for Particle Removal

A filter and regulator joined top-to-bottom, these filter/regulators provide clean, compressed air at the pressure you need. They connect to other Festo units of these same series with joiner clamps (sold separately)—even if the pipe sizes are slightly different—so you can customize your air preparation system. The regulator is relieving, so it will exhaust when the downstream pressure exceeds the set pressure.
Slip a padlock through a hole in the knob to prevent unwanted pressure changes. Add a safety lockout valve to prevent accidental start-ups during maintenance and comply with OSHA lockout/tagout regulations.
Joiner clamps (sold separately) create compact, airtight connections between components. These clamps come with mounting brackets.
End block sets (sold separately) allow you to swap out filter/regulator/lubricator components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them.
Filter/Regulators | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Replacement Filter Elements | Optional Filter Elements | Joiner Clamps | End Block Sets | |||||||||||||||||
| Manufacturer Series | Inlet | Outlet | For Max. Shackle Dia. | Max. Flow Rate | Pressure Regulating Range, psi | Max. Pressure, psi | Max. Temp., °F | Removes Particle Size Down To, microns | Ht. | Wd. | Each | Removes Particle Size Down To, microns | Each | Removes Particle Size Down To, microns | Each | Each | Each | |||||
Polycarbonate Plastic Bowl—Clear with Automatic Drain | ||||||||||||||||||||||
| MS4 | 1/4 | 1/4 | 5/8" | 65 scfm @ 100 psi | 7.4-176 | 176 | 140° | 5 | 8 1/4" | 1 5/8" | 0000000 | 0000000 | 5 | 0000000 | 00000 | 40 | 00000000 | 00000 | 0000000 | 000000 | 0000000 | 000000 |
| MS4 | 3/8 | 3/8 | 5/8" | 65 scfm @ 100 psi | 7.4-176 | 176 | 140° | 5 | 8 1/4" | 1 5/8" | 0000000 | 000000 | 5 | 0000000 | 0000 | 40 | 00000000 | 0000 | 0000000 | 00000 | 0000000 | 00000 |
End Block Sets for Festo Modular Compressed
Air Filter/Regulator/Lubricators (FRLs)

Swap out Festo modular filter/regulator/lubricator components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them. Check the manufacturer series on your Festo components to ensure compatibility.
Festo Compressed Air Filter Elements for Particle Removal

Replace the filter element in your Festo modular compressed air filter to trap solid particles and water droplets. To extend filter life, choose the coarsest (highest micron) option that still meets your air quality needs. Check the manufacturer series on your filter to ensure compatibility.
Festo Compressed Air Filter Elements for Oil Removal

Also known as coalescing filters, these filter elements fit in Festo modular compressed air filters to remove oil and particles as small as 0.01 microns. Check the manufacturer series on your filter to ensure compatibility.
| For Manufacturer Series | Removes Particle Size Down To, microns | Each | |
| MS4 | 0.01 | 0000000 | 000000 |
Festo Compressed Air Filter Bowls

Replace a damaged bowl, or change the drain type on your Festo modular compressed air filter. Bowls come with an O-ring to ensure a tight seal. Check the manufacturer series on your filter to ensure compatibility.
Bowl | ||||||
|---|---|---|---|---|---|---|
| For Manufacturer Series | Material | Type | Guard Material | O-Ring Material | Each | |
Automatic Drain | ||||||
| MS4, MSB4 | Polycarbonate Plastic | Clear | Polycarbonate Plastic | Buna-N Rubber | 0000000 | 0000000 |
Festo Modular Compressed Air Filters for Particle Removal

Extend the service life of air-powered tools and equipment by removing particles and water droplets from compressed air. Filters have a clear bowl or a sight glass so you can see inside to monitor contents.
Joiner clamps (sold separately) connect the filter to another Festo modular component with the same series number. They come with mounting brackets to attach the filter to a wall or equipment.
End block sets (sold separately) allow you to swap out filter/regulator/lubricator components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them.
Filters | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
O'all | Joiner Clamps | End Block Sets | ||||||||||
| Manufacturer Series | Pipe Size | Max. Flow Rate | Max. Pressure, psi | Removes Particle Size Down To, microns | Ht. | Wd. | Each | Each | Each | |||
Polycarbonate Plastic Bowl—Clear with Automatic Drain | ||||||||||||
| MS4 | 1/4 | 49 scfm @ 100 psi | 176 | 5 | 6 3/8" | 1 5/8" | 0000000 | 0000000 | 0000000 | 000000 | 0000000 | 000000 |
| MS4 | 3/8 | 49 scfm @ 100 psi | 176 | 5 | 6 7/16" | 3 1/4" | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
Compressed Air Filters for Particle Removal

Extend the service life of air-powered tools and equipment by removing particles and water droplets from compressed air.
BSPP threads are also known as G threads.
Festo Compressed Air Filter Seals

Replace failing or lost O-rings in Festo modular compressed air filters. Check the manufacturer series on your filter to ensure compatibility.
| For Manufacturer Series | O-Ring Material | Specifications Met | Each | |
| MS4, MSB4 | Buna-N Rubber | ISO 3601 | 0000000 | 00000 |
Festo Modular Compressed Air Filters for Oil Removal

Also known as coalescing filters, these filters remove compressor oil to extend the service life of air-powered tools and equipment. Filters have a clear bowl or a sight glass so you can see inside to monitor contents. To prevent clogs, install a particle filter before the oil filter.
Joiner clamps (sold separately) connect the filter to another Festo modular component with the same series number. They come with mounting brackets to attach the filter to a wall or equipment.
End block sets (sold separately) allow you to swap out filter/regulator/lubricator components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them.
Filters | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Joiner Clamps | End Block Sets | |||||||||||
| Mfr. Series | Pipe Size | Max. Flow Rate | Max. Pressure, psi | Removes Particle Size Down To, microns | Removes Oil Content Down To, ppm | Ht. | Wd. | Each | Each | Each | |||
Polycarbonate Plastic Bowl—Clear with Semi-Automatic Drain | |||||||||||||
| MS4 | 1/4 | 14 scfm @ 100 psi | 176 | 0.01 | 0.008 | 6 1/2" | 1 5/8" | 0000000 | 0000000 | 0000000 | 000000 | 0000000 | 000000 |
| MS4 | 3/8 | 14 scfm @ 100 psi | 176 | 0.01 | 0.008 | 6 7/16" | 3 1/4" | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
Festo Compressed Air Lubricator Sight Domes

Replace a cracked or lost sight dome on your Festo compressed air lubricator. These sight domes let you keep an eye on how much lubricant is entering your air line. All come with an O-ring to ensure a tight seal.
| For Manufacturer Series | Material | Includes | Each | |
For Series No. 4, 6, 9 | ||||
|---|---|---|---|---|
| MS4, MS6, MS9 | Polycarbonate Plastic | O-Ring | 0000000 | 000000 |
Festo Modular Compressed Air Lubricators

Add lubrication to your air supply to extend the service life of air-powered tools and equipment. These lubricators connect to other Festo units of the same series with joiner clamps (sold separately)—even if the pipe sizes are slightly different—so you can customize your air preparation system. You can see inside the bowl to check the oil level for refilling. Adjust the amount of lubricant in the air based on your equipment's performance. If your machine is running loudly or showing signs of wear, increase the amount; if you notice oil building up, decrease it. Install these lubricators in your air line after filters and regulators.
Joiner clamps (sold separately) create compact, airtight connections between components. These clamps come with mounting brackets.
End block sets (sold separately) allow you to swap out components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them.
Lubricators | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | End Block Sets | ||||||||||
| Manufacturer Series | Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Wd. | Each | Each | Each | |||
Polycarbonate Plastic Bowl—Clear | |||||||||||||
| MS4 | 1/4 | 1/4 | 65 scfm @ 100 psi | 176 | 140° | 6 1/2" | 1 5/8" | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 |
| MS4 | 3/8 | 3/8 | 65 scfm @ 100 psi | 176 | 140° | 6 1/2" | 2 1/4" | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 |
Festo Compressed Air Lubricator Bowls

Replace a damaged bowl on your Festo modular compressed air lubricator. Bowls come with an O-ring to ensure a tight seal. Check the manufacturer series on your lubricator to ensure compatibility.
| For Manufacturer Series | Drain Type | Includes | Each | |
Polycarbonate Plastic Bowl—Clear | ||||
|---|---|---|---|---|
| MS4 | Without Drain | Bowl Guard, O-Ring | 0000000 | 000000 |
Festo Modular Compressed Air Regulators

Adjust and maintain the pressure of your compressed air. All regulators are relieving style, so they exhaust when the downstream pressure exceeds the set pressure. They have a locking head to prevent unintentional pressure changes. Install in your air line after filters.
Joiner clamps (sold separately) connect the regulator to another Festo modular component with the same series number. They come with mounting brackets to attach the regulator to a wall or equipment.
End block sets (sold separately) allow you to swap out filter/regulator/lubricator components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them.
Regulators | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe size | Overall | Joiner Clamps | End Block Sets | ||||||||||||||
| Manufacturer Series | Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Gauge Included | Wd. | Ht. | Max. Temp., °F | For Max. Shackle Dia. | Regulating Accuracy | Pressure Regulating Range, psi | Each | Each | Each | |||
Aluminum Housing | |||||||||||||||||
Series No. 4—NPT Female Inlet and Outlet | |||||||||||||||||
| MS4 | 1/4 | 1/4 | 65 scfm @ 100 psi | 206 | Yes | 1 5/8" | 5" | 140° | 5/8" | Not Rated | 7.4-176 | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 |
| MS4 | 3/8 | 3/8 | 65 scfm @ 100 psi | 206 | Yes | 1 5/8" | 5" | 140° | 5/8" | Not Rated | 7.4-176 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
Compressed Air Regulating Manifolds

Use a single air supply to meet the pressure requirements of multiple applications—connect one of these manifolds to your air line, and then set a different output pressure for each station. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install in your air line after filters.
Style C manifolds are suitable in the high-pressure systems required for sandblasting, molding and machining operations, and conveying.
Pipe Size | Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Gauge Included | Wd. | Ht. | Housing Material | Max. Temp., °F | Regulating Accuracy | Pressure Regulating Range, psi | Each | ||
NPT Female Inlet and Outlet | |||||||||||||
2 Stations | |||||||||||||
| C | 1/4 | 1/4 | 65 scfm @ 100 psi | 206 | Yes | 3 1/4" | 4 7/8" | Aluminum | 140° | ±7 psi | 4.4-176 psi | 0000000 | 0000000 |
4 Stations | |||||||||||||
| C | 1/4 | 1/4 | 65 scfm @ 100 psi | 206 | Yes | 6 3/8" | 4 7/8" | Aluminum | 140° | ±7 psi | 4.4-176 psi | 0000000 | 000000 |
6 Stations | |||||||||||||
| C | 1/4 | 1/4 | 65 scfm @ 100 psi | 206 | Yes | 9 5/8" | 4 7/8" | Aluminum | 140° | ±7 psi | 4.4-176 psi | 0000000 | 000000 |
8 Stations | |||||||||||||
| C | 1/4 | 1/4 | 65 scfm @ 100 psi | 206 | Yes | 12 3/4" | 4 7/8" | Aluminum | 140° | ±7 psi | 4.4-176 psi | 0000000 | 000000 |

























