
The AirTAC Airtac BSLM Miniature Silencer BSLM01-S is a genuine mini silencer that cuts exhaust noise by 20 dB at 0.5 MPa using a copper-particle sintered element in a SUS304 body.
A silencer screws onto the exhaust port of a directional valve and breaks up the pressure pulse that otherwise leaves as a sharp crack of escaping air. In the stainless BSLM line, the sound-absorbing element is a copper-particle sintered disc held in a SUS304 body, and on this 1/8 in size it cuts exhaust noise by 20 dB at 0.5 MPa. The miniature body keeps the overall length short so it does not snag on guards or pinch points beside compact valve manifolds.
The -S suffix means the body is SUS304 rather than aluminium alloy, which is why this SKU is specified where wash-down, salt-laden air or mild chemical splash would pit a painted aluminium part. It also suits copper-prohibited process areas such as electronics assembly and plating shops. Pressure ratings are unchanged by the stainless construction: 0-1.0 MPa working, 1.5 MPa proof, -750 mmHg vacuum, -20 to +70 C.
| Model | Airtac BSLM Miniature Silencer BSLM01-S |
|---|---|
| Type | Mini silencer |
| Series | BSLM |
| 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.
| BSLM | Mini 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. |
On a poultry or dairy packing line, the valve bank is hosed down each shift and aluminium silencers corrode and shed particles. The SUS304 body of the BSLM01-S survives the caustic rinse on a 1/8 in exhaust port.
Salt-laden air on a research vessel or coastal water-treatment skid attacks standard alloy fittings. A 1/8 in stainless silencer on the solenoid exhaust keeps pneumatic purge valves quiet and rust-free.
Pick-and-place fixtures in copper-prohibited assembly areas cannot vent through bare brass elements near sensitive stages. The SUS304-bodied BSLM01-S fits tight 1/8 in manifold ports where a full-size silencer will not clear the fixture cover.
Stainless BSLM parts are rated at 20 dB on 1/8 in and larger threads and 15 dB on the M5 size, so stepping up or down changes both the attenuation and the flow path. The size below this SKU is BSLM-M5 and the size above is BSLM02 in 1/4 in PT. Follow the valve exhaust port, not the tube bore: threading a silencer smaller than the port throttles the exhaust and slows the cylinder return stroke. If the exhaust air is heavily oiled or carrying swarf, the sintered disc will load up faster and noise will creep back. Where you also need to set the exhaust speed of the actuator, the BESL series adds an adjustable throttle to the same sintered principle.
Quick checklist
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. This SKU is the 1/8 in PT threaded size of the stainless mini series, with a SUS304 body and a copper-particle sintered element giving 20 dB noise reduction at 0.5 MPa. The stainless construction does not change any pressure or temperature figure versus the standard BSLM.
Match the silencer thread to the valve exhaust port. BSLM-M5 suits small manifold sub-plates and gives 15 dB at 0.5 MPa; the BSLM01-S covers the common 1/8 in PT port at 20 dB; BSLM02 handles 1/4 in ports with a larger flow path, which matters most on fast-cycling cylinders where a restricted exhaust would slow the return stroke. Going larger than the port adds bulk with little extra benefit on this mini series.
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