Festo Compressed Air Filters

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Removes Particle Size Down To

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Opaque with Sight Glass

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59 Products

About Air Preparation

Customize your air preparation system with dryers, filters, and other purifying parts.

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.

4 Series—NPT Female Inlet × NPT Female Outlet

Joiner Clamps—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—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													Joiner Clamps		End Block Sets
		Pipe Size								Overall
	Mfr. Series	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Filter Service Indicator Included	Housing Material	Ht.	Wd.		Each		Each		Each
Polycarbonate Bowl—Clear with Polycarbonate Bowl Guard and Automatic Drain



		MS4	1/4	1/4	49 scfm @ 100 psi	176	140	5	No	Aluminum	6 3/8"	1 5/8"	3049N11	000000	3250T11	000000	3293N11	000000


		MS4	3/8	3/8	49 scfm @ 100 psi	176	140	5	No	Aluminum	6 7/16"	3 1/4"	3049N12	00000	3250T11	00000	3293N12	00000

Replacements for Filters

		Each
O-Ring	3053N11	00000
Filter Element	4120T21	0000
Filter Bowl	3052N11	000000

6 Series—NPT Female Inlet × NPT Female Outlet

	Filters													Joiner Clamps		End Block Sets
		Pipe Size								Overall
	Mfr. Series	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Filter Service Indicator Included	Housing Material	Ht.	Wd.		Each		Each		Each
Polycarbonate Bowl—Clear with Polycarbonate Bowl Guard and Automatic Drain



		MS6	1/2	1/2	134 scfm @ 100 psi	176	140	5	No	Aluminum	8 5/8"	2 1/2"	3049N13	000000	3250T12	000000	3293N13	000000


		MS6	3/4	3/4	134 scfm @ 100 psi	176	140	5	No	Aluminum	8 5/16"	4 1/2"	3049N14	000000	3250T12	00000	3293N14	00000

Replacements for Filters

9 Series—NPT Female Inlet × NPT Female Outlet

	Filters													Joiner Clamps		End Block Sets
		Pipe Size								Overall
	Mfr. Series	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Filter Service Indicator Included	Housing Material	Ht.	Wd.		Each		Each		Each
Aluminum Bowl—Opaque with Sight Glass and Automatic Drain



		MS9	1	1	357 scfm @ 100 psi	174	140	5	No	Aluminum	13 5/8"	4 1/8"	3049N15	0000000	3294N13	000000	3293N15	000000

Replacements for Filters

		Each
O-Ring	3053N13	00000
Filter Element	3040N17	00000

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.

For Mfr. Series	Removes Particle Size Down To, μm		Each
MS2, MSB2	5	4120T111	00000
MS4, MSB4	5	4120T21	0000
MS4, MSB4	40	4120T112	0000
MS6, MSB6	5	4120T22	0000
MS6, MSB6	40	4120T113	0000
MS9, MSB9	5	3040N17	00000
MS9, MSB9	40	4120T114	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.

4 Series—NPT Female Inlet × NPT Female Outlet

Image of Product. Front orientation. Compressed Air Filters. Festo Modular Compressed Air Filters for Oil Removal.

	Filters														Joiner Clamps		End Block Sets
		Pipe Size									Overall
	Mfr. Series	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Removes Oil Content Down To, ppm	Filter Service Indicator Included	Housing Material	Ht.	Wd.		Each		Each		Each
Polycarbonate Bowl—Clear with Polycarbonate Bowl Guard and Semi-Automatic Drain



		MS4	1/4	1/4	14 scfm @ 100 psi	176	140	0.01	0.008	No	Aluminum	6 1/2"	1 5/8"	3051N11	000000	3250T11	000000	3293N11	000000


		MS4	3/8	3/8	14 scfm @ 100 psi	176	140	0.01	0.008	No	Aluminum	6 7/16"	3 1/4"	3051N12	000000	3250T11	00000	3293N12	00000

Replacements for Filters

		Each
O-Ring	3053N11	00000
Filter Element	3043N14	00000

6 Series—NPT Female Inlet × NPT Female Outlet

	Filters														Joiner Clamps		End Block Sets
		Pipe Size									Overall
	Mfr. Series	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Removes Oil Content Down To, ppm	Filter Service Indicator Included	Housing Material	Ht.	Wd.		Each		Each		Each
Polycarbonate Bowl—Clear with Polycarbonate Bowl Guard and Automatic Drain



		MS6	1/2	1/2	35 scfm @ 100 psi	176	140	0.01	0.008	No	Aluminum	8 1/16"	2 1/2"	3051N13	0000000	3250T12	000000	3293N13	000000


		MS6	3/4	3/4	35 scfm @ 100 psi	176	140	0.01	0.008	No	Aluminum	8 1/16"	4 1/2"	3051N14	000000	3250T12	00000	3293N14	00000

Replacements for Filters

9 Series—NPT Female Inlet × NPT Female Outlet

	Filters														Joiner Clamps		End Block Sets
		Pipe Size									Overall
	Mfr. Series	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Removes Oil Content Down To, ppm	Filter Service Indicator Included	Housing Material	Ht.	Wd.		Each		Each		Each
Aluminum Bowl—Opaque with Sight Glass and Automatic Drain



		MS9	1	1	206 scfm @ 100 psi	174	140	0.01	0.008	No	Aluminum	16 3/8"	3 1/2"	3051N15	0000000	3294N13	000000	3293N15	000000

Replacements for Filters

		Each
O-Ring	3053N13	00000
Filter Element	3043N16	000000

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 Female Inlet × BSPP Female Outlet

Opaque Bowl

with Sight

Glass

BSPP threads are also known as G threads.

	Pipe Size					Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Removes Particle Size Down To, μm	Ht.	Wd.		Each
Polycarbonate Bowl—Opaque with Sight Glass and Manual Drain



		1/4	1/4	56 scfm @ 100 psi	203	5	6 3/8"	1 5/8"	4120T2	000000


		3/8	3/8	116 scfm @ 100 psi	290	5	8 1/4"	2 1/2"	4120T4	00000
		1/2	1/2	123 scfm @ 100 psi	290	5	8 1/4"	2 1/2"	4120T5	00000

Replacement Elements

		Each
Filter Element	4120T21	00000
Filter Element	4120T22	0000

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 Mfr. Series	Removes Particle Size Down To, μm		Each
MS4	0.01	3043N14	000000
MS6	0.01	3043N15	00000
MS9	0.01	3043N16	000000

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.

4 Series—NPT Female Inlet × NPT Female Outlet

	Filter/Regulators													End Block Sets
	Pipe Size									Overall
	Inlet	Outlet	For Max. Shackle Dia.	Max. Flow Rate @ Pressure	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Features	Ht.	Wd.		Each		Each
MS4 Series







				Polycarbonate Bowl—Clear with Polycarbonate Bowl Guard and Automatic Drain

				1/4	1/4	5/8"	65 scfm @ 100 psi	7.4 to 176	176	140	5	Padlockable Knob	8 1/4"	1 5/8"	3287N11	000000	3293N11	000000


				3/8	3/8	5/8"	65 scfm @ 100 psi	7.4 to 176	176	140	5	Padlockable Knob	8 1/4"	1 5/8"	3287N12	000000	3293N12	00000

Accessories and Replacements for Filter/Regulators

Removes Particle Size Down To, μm		Each
5	4120T21	00000
40	4120T112	0000

		Each
Joiner Clamp with Mounting Bracket	3250T11	000000

6 Series—NPT Female Inlet × NPT Female Outlet

	Filter/Regulators													End Block Sets
	Pipe Size									Overall
	Inlet	Outlet	For Max. Shackle Dia.	Max. Flow Rate @ Pressure	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Features	Ht.	Wd.		Each		Each
MS6 Series







				Polycarbonate Bowl—Clear with Polycarbonate Bowl Guard and Automatic Drain

				1/4	1/4	5/8"	130 scfm @ 100 psi	7.4 to 176	176	140	5	Padlockable Knob	11 5/8"	3"	3287N21	0000000	3293N21	000000


				1/2	1/2	5/8"	130 scfm @ 100 psi	7.4 to 176	176	140	5	Padlockable Knob	11 5/8"	3"	3287N13	000000	3293N13	00000
				3/4	3/4	5/8"	130 scfm @ 100 psi	7.4 to 176	176	140	5	Padlockable Knob	11 1/2"	2 1/2"	3287N14	000000	3293N14	00000

Accessories and Replacements for Filter/Regulators

Removes Particle Size Down To, μm		Each
5	4120T22	00000
40	4120T113	0000

Compressed Air Filter Seals, Filter/Regulator/Lubricator Joiner Clamps and Replacement Compressed Air Filter Bowls

		Each
O-Ring	3053N12	00000
Joiner Clamp with Mounting Bracket	3250T12	00000
Replacement Filter Bowl	3052N12	00000

9 Series—NPT Female Inlet × NPT Female Outlet

	Filter/Regulators													End Block Sets
	Pipe Size									Overall
	Inlet	Outlet	For Max. Shackle Dia.	Max. Flow Rate @ Pressure	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Features	Ht.	Wd.		Each		Each
MS9 Series







				Aluminum Bowl—Opaque with Sight Glass and Automatic Drain

				1	1	5/8"	560 scfm @ 100 psi	7.25 to 174	174	140	5	Padlockable Knob	17 3/4"	3 1/2"	3287N15	0000000	3293N15	000000

Accessories and Replacements for Filter/Regulators

Removes Particle Size Down To, μm		Each
5	3040N17	000000
40	4120T114	00000

		Each
Joiner Clamp with Mounting Bracket	3294N13	000000

Compressed Air Filters for Particle Removal with Push-to-Connect Fittings

Quickly install these filters on your air line—no pipe nipples or joiner clamps required. Their push-to-connect fittings create tight seals around tubing. These filters extend the service life of air-powered tools and equipment by removing particles and water droplets from compressed air. Small and made of lightweight plastic, they can be easily mounted onto machines or robotic arms to protect end-of-arm tools. A clear bowl lets you see inside to monitor their contents.

Mounting Brackets—Mounting brackets (sold separately) allow you to attach filters to a wall or equipment.

	Filters									Replacement Elements		Mounting Brackets
	For Tube OD, mm					Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Removes Particle Size Down To, μm	Ht.	Wd.		Each		Each		Each
Polycarbonate Bowl—Clear with Manual Drain



		6	6	8.8 scfm @ 100 psi	145	5	4 1/8"	1 1/4"	8098N111	000000	4120T111	00000	8098N112	00000

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.

Series No. 4—NPT Female Inlet and Outlet


Inline Components	Stacked Components

Inline Components—Inline FRLs are the standard design. Each part can be replaced or repaired on its own, which reduces maintenance costs.

Stacked Components—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—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.

Compressed Air Filter/Regulator/Lubricators												Joiner Clamps		End Block Sets
	Pipe Size							Overall
Mfr. Series	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Removes Particle Size Down To, μm	Pressure Regulation Range, psi	Lubricant Cap., fl. oz.	Ht.	Wd.		Each		Each		Each







			Inline with Clear Polycarbonate Bowl and Automatic Drain

			MS4	1/4	1/4	65 scfm @ 100 psi	176	5	22 to 174	1	8"	4 3/4"	3291N11	0000000	3250T11	000000	3293N11	000000


			MS4	3/8	3/8	65 scfm @ 100 psi	176	5	22 to 174	1	8"	4 3/4"	3291N12	000000	3250T11	00000	3293N12	00000




					Stacked with Clear Polycarbonate Bowl and Automatic Drain

					MS4	1/4	1/4	65 scfm @ 100 psi	176	5	22 to 174	1	8"	3 1/4"	3291N16	000000	3250T11	00000	3293N11	00000


					MS4	3/8	3/8	65 scfm @ 100 psi	176	5	22 to 174	1	8"	3 1/8"	3291N17	000000	3250T11	00000	3293N12	00000

Replacements for Compressed Air Filter/Regulator/Lubricators

		Each
Replacement Filter Element for Series 4	4120T21	00000
Replacement O-Ring for Series 4	3053N11	0000
Replacement Filter Bowl for Series 4	3052N11	000000

Series No. 6—NPT Female Inlet and Outlet


Inline Components	Stacked Components

Inline Components—Inline FRLs are the standard design. Each part can be replaced or repaired on its own, which reduces maintenance costs.

Stacked Components—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.

Compressed Air Filter/Regulator/Lubricators												Joiner Clamps		End Block Sets
	Pipe Size							Overall
Mfr. Series	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Removes Particle Size Down To, μm	Pressure Regulation Range, psi	Lubricant Cap., fl. oz.	Ht.	Wd.		Each		Each		Each







			Inline with Clear Polycarbonate Bowl and Automatic Drain

			MS6	1/2	1/2	130 scfm @ 100 psi	176	5	59 to 174	2.5	12"	7 3/8"	3291N13	0000000	3250T12	000000	3293N13	000000


			MS6	3/4	3/4	130 scfm @ 100 psi	176	5	59 to 174	2.5	12"	7 3/8"	3291N14	000000	3250T12	00000	3293N14	00000




					Stacked with Clear Polycarbonate Bowl and Automatic Drain

					MS6	1/2	1/2	130 scfm @ 100 psi	176	5	59 to 174	2.5	12"	7 3/8"	3291N18	000000	3250T12	00000	3293N13	00000


					MS6	3/4	3/4	130 scfm @ 100 psi	176	5	59 to 174	2.5	12"	7 3/8"	3291N19	000000	3250T12	00000	———	0

Replacements for Compressed Air Filter/Regulator/Lubricators

		Each
Replacement Filter Element for Series 6	4120T22	00000
Replacement O-Ring for Series 6	3053N12	0000
Replacement Filter Bowl for Series 6	3052N12	00000

Series No. 9—NPT Female Inlet and Outlet


Inline Components	Stacked Components

Inline Components—Inline FRLs are the standard design. Each part can be replaced or repaired on its own, which reduces maintenance costs.

Stacked Components—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.

Compressed Air Filter/Regulator/Lubricators												Joiner Clamps		End Block Sets
	Pipe Size							Overall
Mfr. Series	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Removes Particle Size Down To, μm	Pressure Regulation Range, psi	Lubricant Cap., fl. oz.	Ht.	Wd.		Each		Each		Each







			Inline with Opaque Aluminum Bowl with Sight Glass and Automatic Drain

			MS9	1	1	560 scfm @ 100 psi	174	5	22 to 174	16.5	13 5/8"	8 1/4"	3291N15	0000000	3294N13	000000	3293N15	000000




					Stacked with Opaque Aluminum Bowl with Sight Glass and Automatic Drain

					MS9	1	1	560 scfm @ 100 psi	174	5	22 to 174	16.5	13 5/8"	8 1/4"	3291N21	000000	3294N13	00000	3293N15	00000

Replacements for Compressed Air Filter/Regulator/Lubricators

		Each
Replacement Filter Element for Series 9	3040N17	000000
Replacement O-Ring for Series 9	3053N13	0000

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 Mfr. Series	Material	Type	Guard Material	O-Ring Material	Includes		Each
Automatic Drain



		MS4, MSB4	Polycarbonate	Clear	Polycarbonate	Buna-N	O-Ring, Guard	3052N11	0000000


		Semi-Automatic Drain



				MS6, MSB6	Polycarbonate	Clear	Polycarbonate	Buna-N	O-Ring, Guard	3052N12	00000

Corrosion-Resistant Compressed Air Filter/Regulators for Particle Removal

Opaque

Bowl

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.

Stainless Steel Bowl—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													Elements
	Pipe Size								Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Pressure Adjustment	Pressure Regulation Range, psi	Removes Particle Size Down To, μm	Gauge Included	Wd.	Ht.	Specs. Met		Each		Each
NPT Female Inlet × NPT Female Outlet







				Stainless Steel Bowl—Opaque with Manual Drain

				1/4	1/4	65 scfm @ 100 psi	290	Screw	7.25 to 174	5	No	2 1/2"	9 7/8"	NACE MR0175/ISO 15156	3297N11	0000000	3297N13	000000


				1/2	1/2	130 scfm @ 100 psi	290	Screw	7.25 to 174	5	No	2 1/2"	9 7/8"	NACE MR0175/ISO 15156	3297N12	000000	3297N13	00000

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 Mfr. Series	O-Ring Material	Specs. Met		Each
MS4, MSB4	Buna-N	ISO 3601	3053N11	00000
MS6, MSB6	Buna-N	ISO 3601	3053N12	0000
MS9, MSB9	Buna-N	ISO 3601	3053N13	0000

Compressed Air Filter/Regulators for Particle Removal with Push-to-Connect Fittings

Image of Product. Front orientation. Compressed Air Filter/Regulators. 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.

Mounting Brackets—Mounting brackets (sold separately) allow you to attach the filter/regulator to a wall or equipment.

	Filter/Regulators										Elements		Mounting Brackets
	For Tube OD, mm						Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Pressure Regulation Range, psi	Removes Particle Size Down To, μm	Wd.	Ht.		Each		Each		Each
Polycarbonate Bowl—Clear with Manual Drain



		6	6	10.9 scfm @ 100 psi	116	8 to 101	5	1 1/4"	5"	8516N11	000000	4120T111	00000	8098N112	00000