Airtac BSL General Purpose Silencer BSL03
The AirTAC Airtac BSL General Purpose Silencer BSL03 is a genuine universal silencer that cuts exhaust noise by 13 dB at 0.5 MPa using a sintered brass sound-absorbing cover in an aluminium-alloy body.
- TypeUniversal silencer
- SeriesBSL
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Noise reduction13 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 BSL03
Every time a directional valve dumps a cylinder, the trapped air leaves through a hole a few millimetres wide and the pressure pulse behind it becomes the crack you hear on the shop floor. The BSL03 screws into that exhaust port, and its brass-particle sintered cover splits one violent pulse into thousands of tiny jets through a porous metal cake, pulling the peak down by 13 dB measured at 0.5 MPa. The body is die-cast aluminium alloy and the thread is 3/8in PT, the standard tapered size on mid-size valve exhaust ports.
What sets BSL apart from the resin PAL range is the sintered brass element itself. Metal tolerates hot, oily, dust-laden exhaust and a knock from a passing carton without deforming, which is why it is the default choice on dirty machinery. The catalogue rates it for 0 to 1.0 MPa working pressure with a 1.5 MPa proof pressure, so the part carries a 50 percent margin above its own rating, and it also holds vacuum down to -750 mmHg when the same valve ports vent a suction circuit. Working temperature spans -20 to +70 C.
Airtac BSL General Purpose Silencer BSL03 Technical Specifications
| Model | Airtac BSL General Purpose Silencer BSL03 |
|---|---|
| Type | Universal silencer |
| Series | BSL |
| Noise reduction | 13 dB at 0.5 MPa |
| Element | Sintered brass sound-absorbing cover in an aluminium-alloy body |
| 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. 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 BSL03
| 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. |
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 BSL03 Is Used
Canning line diverters
Air-cylinder diverter gates on a beverage canning line fire several times a minute beside operators who stand there for a full shift. A BSL03 on each 3/8in exhaust port removes the crack without adding a part that dents when a fallen can hits it.
Sawmill gate cylinders
Sawdust-heavy exhaust from log-positioning and gate cylinders quickly blinds a fine resin filter. The sintered brass element on BSL03 shrugs off wood dust and vibration from the saw frame, keeping exhaust free where a plastic body would clog.
Stamping press part ejectors
Ejector cylinders under a mechanical stamping press vent hard at the end of every stroke, adding a sharp report to an already loud cell. Fitting BSL03 to the 3/8in valve exhausts knocks that peak down and helps the site work toward its noise-limit target.
Is the Airtac BSL General Purpose Silencer BSL03 the Right Part?
Sintered brass at 13 dB is the tougher half of the AirTAC pair: choose it where the silencer will be struck, sprayed with coolant or fed hot compressor air. Resin PAL bodies reduce 25 dB at the same pressure and weigh almost nothing, so they win in laboratories and on valve banks beside seated operators, but a polyethylene filter element is the wrong answer where swarf and washdown are daily events. If the same port also needs its exhaust speed throttled, step up to the BESL series, which adds an adjustable exhaust throttle to the same sintered-ring principle.
Size matters more than buyers expect. BSL03 sits between BSL02 at 1/4in below and BSL04 at 1/2in above in the same series ladder. Fitting a silencer smaller than the valve's exhaust port starves the dump, and the slower return stroke shows up first on cycle-time-critical strokes, so match the port rather than sizing down to save space.
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 BSL03 FAQ
Working pressure 0 to 1.0 MPa (0 to 10 kgf/cm2), proof pressure 1.5 MPa, vacuum capability -750 mmHg (10 Torr), and a working temperature range of -20 to +70 C. Noise reduction is 13 dB measured at 0.5 MPa through the brass-particle sintered element. The BSL03 is the 3/8in PT threaded member of the BSL ladder, which runs M5, 1/8in (01), 1/4in (02), 3/8in (03) and 1/2in (04).
PTFE tape is fine on the 3/8in PT taper, but keep it off the first thread so shreds cannot be drawn into the sintered element and block the pores. On size: stepping down to BSL02 at 1/4in on a port drilled for 3/8in chokes the exhaust dump, and the first symptom is a slower cylinder return stroke rather than any damage, so match the port size instead of sizing down.
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