Products

Pneumatic Silencers and Mufflers

Balance noise reduction and backpressure in the pneumatic system

Pneumatic silencers deliver durability, fast assembly, and cost efficiency

Manufacturers across the world choose POREX® pneumatic silencers to help meet noise mitigation, efficiency, airflow, and pressure drop requirements. Cost-effective pneumatic silencers made with our advanced porous plastic materials deliver long life and superior noise attenuation, along with additional key benefits to help you succeed in today’s competitive global markets:

Compared with a metal acoustical silencer, a Porex pneumatic silencer offers many advantages, with a porous polyethylene (PE) structure that significantly reduces weight, delivers greatly improved corrosion resistance and has the ability to filter particles and aerosols.

Breadth of standard options for pneumatic silencers and mufflers available

Key Features & Benefits

Improved machine longevity with optimized design for greater reliability and efficiency.
Enhanced performance with customized designs to meet efficiency, airflow and pressure drop requirements.
Fit most standard valves – An extensive selection of sizes, including NPT, BSP, M5 and “push-in” styles.
Effectively filter particulates and aerosols
Mount easily — Injection-molded adapters are integrated into the silencers for easy mounting on pneumatic systems.
Reduce pneumatic equipment noise – Engineered with a porous plastic structure, offering greater noise reduction than metal.
Perform better than metal pneumatic silencers — Numerous advantages over metal silencers, including lower weight and improved corrosion resistance, durability, fast assembly and cost efficiency.

Material Options

Material	Filter head: Porous, hydrophobic Polyethylene (PE) in blue, yellow, grey, orange, white Lower part: Polyethylene (PE)
Thread Size	Standard silencer: M5, 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″ BSP or NPT Push-in silencer: 4, 6, 8, 10, 12 mm Adjustable silencer: M5, 1/8″, 1/4″, 3/8″, 1/2″ BSP or NPT
Pore size	60-130 µm
Max. operating pressure	10 bar
Max. Temperature	100°C
Application	Effectively reduce the noise level of pneumatic devices Fine regulation of air flow Filtering effectively particles and aerosols

Porex Available Silencers

Part #	Size	Nominal Length (mm)	Nominal Diameter (mm)
S01ST	M5	21,5	6,5
S03ST	G 1/8 BSP o. NPT	34,0	12,5
S04ST	G 1/4 BSP o. NPT	42,5	15,5
S05ST	G 3/8 BSP o. NPT	67,5	18,5
S06ST	G 1/2 BSP o. NPT	77,5	23,3
S07ST	G 3/4 BSP o. NPT	131,5	38,5
S08ST	G 1 BSP	161,0	49,0
S03WB	G 1/8 BSP	29,0	13,5
S04WB	G 1/4 BSP	36,5	17,3
S05WB	G 3/8 BSP	63,5	27,0
S06WB	G 1/2 BSP	63,5	27,0
S07HP	G 3/4 BSP	101,0	49,0

Porex Push-In Silencers

Part #	Size	Nominal Length (mm)	Nominal Diameter (mm)
S01STPI	4mm Push in	32,0	7,0
S03STPI	6mm Push in	45,0	12,5
S03WBPI	8mm Push in	43,5	13,5
S04STPI	10mm Push in	57,5	15,5
S05STPI	12mm Push in	82,0	18,5

Porex Adjustable Silencers

Part #	Size	Nominal Length (mm)	Nominal Diameter (mm)	Key Size
R01ST	M5	16,0		1,5 AF
R03ST	G 1/8 BSP o. NPT	20,5	15,0	2,5 AF
R04ST	G 1/4 BSP o. NPT	29,0	18,0	4,0 AF
R05ST	G 3/8 BSP o. NPT	38,0	24,0	6,0 AF
R06ST	G 1/2 BSP o. NPT	50,0	30,0	8 AF

Porex 35 Micron Redbase

Part #	OD of Threads	O.D.	OAL
X-6191	N-125FF – OD Thread Size 1/8″	.625”	1.375”
X-6192	N-250FF – OD Thread Size 1/4″	.750”	1.625”
X-6193	N-375FF – OD Thread Size 3/8″	1.0”	2.75”
X-6194	N-500FF – OD Thread Size 1/2″	1.0”	2.875”
X-6195	N-750FF – OD Thread Size 3/4″	1.5”	5.500”
X-6197	N-1000FF – OD Thread Size 1.0″	2.0”	5.500”

Porex 70 Micron Blackbase

Part #	OD of Threads	O.D.	OAL
X-6179	N-125 – OD Thread Size 1/8″	.625”	1.375”
X-6178	N-250 – OD Thread Size 1/4″	.750”	1.625”
X-6177	N-375 – OD Thread Size 3/8″	1.0”	2.75”
X-6176	N-500FF – OD Thread Size 1/2″	1.0”	2.875”
X-6175	N-750 – OD Thread Size 3/4″	1.5”	5.500”
X-6173	N-1000 – OD Thread Size 1.0″	2.0”	5.500”

Porex 250 Micron Greenbase

Part #	OD of Threads	O.D.	OAL
X-6186	N-125CF – OD Thread Size 1/8″	.625”	1.375”
X-6187	N-250CF – OD Thread Size 1/4″	.750”	1.625”
X-6188	N-375CF – OD Thread Size 3/8″	1.0”	2.75”
X-6189	N-500CF – OD Thread Size 1/2″	1.0”	2.875”
X-6190	N-750CF – OD Thread Size 3/4″	1.5”	5.500”
X-6198	N-1000CF – OD Thread Size 1.0″	2.0”	5.500”

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