Airtac BSL General Purpose Silencer BSL03-S
SUS304 stainless variant (-S)The AirTAC Airtac BSL General Purpose Silencer BSL03-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 BSL03-S
Every time a directional valve exhausts, the trapped pressure pulse escapes as a sharp crack that repeats with each cycle. The BSL03-S screws onto a 3/8 PT exhaust port and forces that pulse through a sintered sound-absorbing element, spreading it into a far quieter diffuse flow. Because this is the -S build, the body is SUS304 stainless steel rather than aluminium alloy, and the published silencing effect for stainless BSL parts at 0.5 MPa is 20 dB on this size.
What separates BSL03-S from the standard BSL03 is not noise performance or shape - the dimensions match the regular 3/8 model exactly - it is the body material. SUS304 resists water, wash-down chemicals and salt-laden air, so the part keeps doing its job where an aluminium body would corrode. That makes it the pick for wet, harsh or corrosive exhaust points, while the internal sound-absorbing element still handles the pressure pulse the same way.
Airtac BSL General Purpose Silencer BSL03-S Technical Specifications
| Model | Airtac BSL General Purpose Silencer BSL03-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 BSL03-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 BSL03-S Is Used
Brewery and dairy wash-down zones
Packaging valves in wet CIP-cleaned areas exhaust dozens of times per hour; the SUS304 body of BSL03-S takes the daily hose-down that pits an aluminium silencer.
Electroplating and surface-treatment lines
Acid mist drifting over a 3/8 valve bank on a plating line eats standard silencers; the stainless body resists the atmosphere while cutting each exhaust crack by 20 dB.
Marine and dockside deck machinery
Salt air corrodes lightweight alloys fast, so winch and hatch-cover valves on coastal equipment use the -S version to keep quiet exhaust protection serviceable.
Is the Airtac BSL General Purpose Silencer BSL03-S the Right Part?
Metal or resin is the first choice. Sintered-metal BSL parts give 20 dB in stainless sizes and survive knocks, hot dirty air and rough handling; resin PAL parts give 25 dB but are lighter duty. If corrosion is the real threat, stay in this -S version rather than the standard BSL03, and do not expect a PAL - there is no stainless resin option.
Size ladder for BSL: M5, 01 (1/8in), 02 (1/4in), 03 (3/8in) and 04 (1/2in). Stepping down to BSL02-S gets you a 1/4 port and a smaller body; stepping up to BSL04-S opens the port to 1/2. Whichever way you go, match the silencer thread to the valve exhaust port itself - fitting a smaller silencer through a reducer chokes the exhaust, slows cylinder return strokes and shortens the element life.
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-S FAQ
BSL03-S is a stainless universal silencer with a SUS304 body and a 3/8in PT thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it tolerates negative pressure to -750 mmHg (10 Torr), proof pressure is 1.5 MPa and the temperature range is -20 to +70 C. Silencing effect is 20 dB at 0.5 MPa, the stainless figure for this thread size.
No. The dimension tables for the stainless and standard BSL lines match, so BSL03-S threads straight onto any 3/8 PT exhaust port that a standard BSL03 fits. The only material change is the SUS304 body, chosen for corrosion resistance. Note the silencing figure differs by series material - stainless parts are rated 20 dB at 0.5 MPa - and for sealing use a little PTFE tape on the PT parallel thread rather than overtightening.
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