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.

Pneumatic Silencers

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 18,5
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”

 

Related Resources

Porex Virtek PTFE Common Joining Techniques

Watch to learn about common joining techniques for PTFE membranes for finished products to allow them to vent.

Specialty Filtration Solutions Brochure

Explore the breadth of custom-engineered specialty filtration solutions designed to meet your unique industrial filtration needs across multiple applications.

Porex Virtek® PTFE Vents for Cap Closures Brochure

Explore the portfolio of Porex Virtek® PTFE vents for cap closures that ensure container integrity during transportation and storage.

Porex Virtek PTFE Fact Sheet

Learn more about the distinctions between sintered Porex Virtek PTFE and ePTFE, enabling you to make informed decisions for your specific applications.