Customize your air preparation system with dryers, filters, and other purifying parts.
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" | 3287N11 | 000000 | 5 | 4120T21 | 00000 | 40 | 4120T112 | 00000 | 3250T11 | 000000 | 3293N11 | 000000 |
| MS4 | 3/8 | 3/8 | 5/8" | 65 scfm @ 100 psi | 7.4-176 | 176 | 140° | 5 | 8 1/4" | 1 5/8" | 3287N12 | 000000 | 5 | 4120T21 | 0000 | 40 | 4120T112 | 0000 | 3250T11 | 00000 | 3293N12 | 00000 |
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 | ||||||||||||||||||||||
| MS6 | 1/4 | 1/4 | 5/8" | 130 scfm @ 100 psi | 7.4-176 | 176 | 140° | 5 | 11 5/8" | 3" | 3287N21 | 0000000 | 5 | 4120T22 | 00000 | 40 | 4120T113 | 00000 | 3250T12 | 000000 | 3293N21 | 000000 |
| MS6 | 1/2 | 1/2 | 5/8" | 130 scfm @ 100 psi | 7.4-176 | 176 | 140° | 5 | 11 5/8" | 3" | 3287N13 | 000000 | 5 | 4120T22 | 0000 | 40 | 4120T113 | 0000 | 3250T12 | 00000 | 3293N13 | 00000 |
| MS6 | 3/4 | 3/4 | 5/8" | 130 scfm @ 100 psi | 7.4-176 | 176 | 140° | 5 | 11 1/2" | 2 1/2" | 3287N14 | 000000 | 5 | 4120T22 | 0000 | 40 | 4120T113 | 0000 | 3250T12 | 00000 | 3293N14 | 00000 |
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 | |||||
Aluminum Bowl—Opaque with Sight Glass and Automatic Drain | ||||||||||||||||||||||
| MS9 | 1 | 1 | 5/8" | 560 scfm @ 100 psi | 7.25-174 | 174 | 140° | 5 | 17 3/4" | 3 1/2" | 3287N15 | 0000000 | 5 | 3040N17 | 000000 | 40 | 4120T114 | 000000 | 3294N13 | 000000 | 3293N15 | 000000 |
Corrosion-Resistant Compressed Air Filter/Regulators for Particle Removal
Manual
Drain
Built to resist corrosion, these filter/regulators withstand harsh environments that would cause standard filter/regulators to break down and fail. The filter and regulator are joined top-to-bottom, so they fit in the same space as a filter alone. They provide clean compressed air at your required pressure. The regulator is relieving, so it will exhaust when the downstream pressure exceeds the set pressure.
316 stainless steel filter/regulators stand up to harsh chemicals and chlorides, so they're often used in facilities that manufacture semiconductors, chemicals, and paper. Their housing and bowl meet NACE (National Association of Corrosion Engineers) standards for performance in corrosive environments.
Filter/Regulators | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Replacement Filter Elements | ||||||||||||
| Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Pressure Adjustment | Pressure Regulating Range, psi | Removes Particle Size Down To, microns | Gauge Included | Wd. | Ht. | Specifications Met | Each | Each | ||
NPT Female Inlet and Outlet | ||||||||||||||
Stainless Steel Bowl—Opaque with Manual Drain | ||||||||||||||
| 1/4 | 1/4 | 65 scfm @ 100 psi | 290 | Screw | 7.25-174 | 5 | No | 2 1/2" | 9 7/8" | NACE MR-01-75 | 3297N11 | 0000000 | 3297N13 | 000000 |
| 1/2 | 1/2 | 130 scfm @ 100 psi | 290 | Screw | 7.25-174 | 5 | No | 2 1/2" | 9 7/8" | NACE MR-01-75 | 3297N12 | 000000 | 3297N13 | 00000 |
Compressed Air Filter/Regulators for Particle
Removal with Push-to-Connect Fittings

Designed for quick installation on your air line, these filter/regulators don’t require pipe nipples or joiner clamps. Their push-to-connect fittings create airtight seals on tubing. A filter and regulator joined top-to-bottom, these filter/regulators provide clean, compressed air at the pressure you need. The regulator is relieving, so it will exhaust when the downstream pressure exceeds the set pressure.
Bowls with an automatic drain periodically release condensate into the air, eliminating the need for manual emptying.
Mounting brackets (sold separately) allow you to attach the filter/regulator to a wall or equipment.
Air Filter/Regulators | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Tube OD | Overall | Replacement Filter Elements | Mounting Brackets | ||||||||||
| Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Pressure Regulating Range, psi | Removes Particle Size Down To, microns | Wd. | Ht. | Each | Each | Each | |||
Polycarbonate Plastic Bowl—Clear with Manual Drain | |||||||||||||
| 6mm | 6mm | 10.9 scfm @ 100 psi | 116 | 8-101 | 5 | 1 1/4" | 5" | 8516N11 | 000000 | 4120T111 | 00000 | 8098N112 | 00000 |

























