Airtac BSL General Purpose Silencer BSL02-S
SUS304 stainless variant (-S)The AirTAC Airtac BSL General Purpose Silencer BSL02-S is a genuine universal silencer that cuts exhaust noise by 20 dB at 0.5 MPa using a copper-particle sintered element in a SUS304 body.
- TypeUniversal silencer
- SeriesBSL
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Noise reduction20 dB
- Temperature-20 to +70 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac BSL General Purpose Silencer BSL02-S
Every time a directional valve dumps a cylinder, the trapped pressure escapes through the exhaust port as a sharp crack. A silencer sits on that port and breaks the pressure pulse into a fine, diffuse flow before it reaches the room. The BSL02-S does this with a brass-particle sintered sound-absorbing cover inside a SUS304 stainless body, cutting exhaust noise by 20 dB at 0.5 MPa.
The -S suffix is the whole point of this SKU: the body that a standard BSL02 makes from aluminium alloy is replaced with SUS304 stainless steel, so the part tolerates wash-down, salt-laden air and corrosive vapours that pit a bare alloy body. The thread is PT 1/4 and it screws straight onto the exhaust or muffler port of any matching valve.
Airtac BSL General Purpose Silencer BSL02-S Technical Specifications
| Model | Airtac BSL General Purpose Silencer BSL02-S |
|---|---|
| Type | Universal silencer |
| Series | BSL |
| Noise reduction | 20 dB at 0.5 MPa |
| Element | Copper-particle sintered element in a sus304 body |
| Body material | Stainless steel 304 (-S variant) |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. Stainless (-S): SUS304 silencer body. The sound-absorbing element remains copper-particle sintered, so this variant is specified for corrosion resistance rather than as a wholly copper-free part. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac BSL General Purpose Silencer BSL02-S
| BSL | Universal silencer. |
|---|---|
| 01 / 02 / 03 / 04 | Thread: 1/8", 1/4", 3/8", 1/2". M5 where the series offers it. |
| D | Black. Blank = grey. |
| -S | Stainless-steel body. |
Choosing a Silencer
- check Sintered-brass types (BSL / BSLM / BESL) give 13 dB and take rough treatment.
- check Resin types (PAL / PALM / PPA) give 25 dB and weigh far less.
- check PPA plugs straight into a tube instead of a thread, and is copper-free for sensitive processes.
- check BESL adds an adjustable throttle, so it silences AND sets exhaust speed in one part.
- check An undersized or clogged silencer shows up as a slow return stroke - size it to the valve's exhaust port.
Where the Airtac BSL General Purpose Silencer BSL02-S Is Used
Food packing line wash-down
On a packaging machine that is hosed down between shifts, an alloy silencer corrodes and sheds particles into the product zone. The SUS304 body of the BSL02-S on the valve exhaust ports survives the daily caustic wash.
Electroplating line valves
Acid and chromate mists around a plating tank attack non-ferrous fittings fast. Fitting the BSL02-S to the hoist and transfer cylinder valves keeps exhaust noise down in a zone where a standard BSL02 would flake and seize.
Marine and dockside pneumatics
Salt air eats aluminium silencers on deck winches, hatch covers and gangway actuators. The stainless BSL02-S on each valve exhaust holds its 20 dB attenuation season after season where the standard body would crust over.
Is the Airtac BSL General Purpose Silencer BSL02-S the Right Part?
Pick metal over resin when the silencer will be knocked by trolleys, run near hot equipment or live in dirty air - sintered brass keeps working where a polyethylene fibre element clogs. Pick resin only when the lowest possible figure matters more: the plastic PAL family reaches 25 dB but this stainless BSL holds 20 dB. If you need to set exhaust speed as well as quieten it, the BESL02-S adds an adjustable throttle to the same 1/4in format.
In the BSL ladder the BSL02-S sits between BSL01-S (1/8in) below and BSL03-S (3/8in) above; M5 also exists at the small end. Stepping down saves panel space but chokes the exhaust and slows cylinder return, so match the thread to the valve's exhaust port rather than sizing down - an undersized silencer is the usual cause of a sluggish actuator. If the environment is dry and clean, the standard aluminium-alloy BSL02 does the same job at lower cost.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
- ✓ Noise target: 13 dB metal or 25 dB resin
Airtac BSL General Purpose Silencer BSL02-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), usable under vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. The thread is PT 1/4 and the silencing effect at 0.5 MPa is 20 dB, from a brass-particle sintered cover inside a SUS304 stainless steel body. Ratings match the standard BSL line exactly - the -S changes the body material, not the pressure figures.
Not automatically. The body is SUS304, but the datasheet's structure table lists the sound-absorbing element as copper-particle sintered, so the airflow still passes through copper. If your process demands a genuinely copper-free air path, specify the all-resin PPA series instead; use the BSL02-S where the driver is corrosion resistance rather than copper exclusion.
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