Airtac BESL Throttle Type Silencer BESL03
The AirTAC Airtac BESL Throttle Type Silencer BESL03 is a genuine throttling silencer that cuts exhaust noise by 13 dB at 0.5 MPa using a sintered brass silencer ring with an adjustable exhaust throttle.
- TypeThrottling silencer
- SeriesBESL
- 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 BESL Throttle Type Silencer BESL03
Every time a valve dumps a cylinder, the trapped air leaves the exhaust port as a single sharp pressure pulse, and that pulse is the crack you hear on the shop floor. The BESL03 screws onto a 3/8in PT exhaust port and breaks that pulse up through a brass-particle sintered ring, dropping the noise by 13 dB measured at 0.5 MPa.
What separates the BESL03 from a plain silencer is the adjustable exhaust throttle built into the same body. Turning the adjuster changes the orifice, so you set how fast the air escapes and therefore how fast the cylinder retracts. The overall length of the body changes with the adjustment too, since the regulating section moves in and out. The body and adjusting parts are aluminium alloy, and the standard thread is taper PT so the part seals on the port taper without a separate sealing washer.
Airtac BESL Throttle Type Silencer BESL03 Technical Specifications
| Model | Airtac BESL Throttle Type Silencer BESL03 |
|---|---|
| Type | Throttling silencer |
| Series | BESL |
| Noise reduction | 13 dB at 0.5 MPa |
| Element | Sintered brass silencer ring with an adjustable exhaust throttle |
| 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 BESL Throttle Type Silencer BESL03
| BESL | Throttling 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 BESL Throttle Type Silencer BESL03 Is Used
Robotic gripper speed setting
On a pick-and-place gripper fed by a 3/8in ported valve, the BESL03 sets how fast the jaws open by throttling the exhaust, then knocks the release hiss down 13 dB so the cell stays workable for the programmer standing next to it.
Packing line valve bank
On a carton-packing machine the operators stand beside the valve manifold for a whole shift, and every cylinder dump adds to the background crack. A BESL03 on each 3/8in exhaust port quiets the bank and lets maintenance trim each station's retract speed without touching the valve.
Conveyor stopper cylinders
Stopper and pusher cylinders on a bottling conveyor need a controlled deceleration so cartons do not jump; the BESL03 provides that exhaust throttling on its 3/8in thread and quiets the repeated cycling at the inspection station at the same time.
Is the Airtac BESL Throttle Type Silencer BESL03 the Right Part?
Choose metal when the silencer can be knocked by handling, chipped by swarf or run in a hot, oily cell; the sintered brass ring in the BESL03 tolerates that. Choose the resin PAL series instead when the site needs the deeper 25 dB cut and the part lives where it will not be struck, or pick a plain BSL when you only want silencing with no speed control. Note the BESL range starts at 1/8in - there is no M5 version, so small direct-mounted valves need BSLM or PALM instead.
Size the BESL03 to the valve exhaust port, not down to the tubing. On a 3/8in port, BESL02 (1/4in) is the size below and BESL04 (1/2in) is the size above; stepping down silences less and restricts the exhaust more, which slows the return stroke, while stepping up costs thread engagement on a smaller port. An undersized or clogged silencer throttles the exhaust even at full open, so match the port and keep the element clear.
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 BESL Throttle Type Silencer BESL03 FAQ
BESL03 is a throttling silencer with a 3/8in PT thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it also works under vacuum down to -750 mmHg (10 Torr), proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. Noise reduction is 13 dB at 0.5 MPa via the brass-particle sintered ring, and the exhaust throttle is adjustable.
The BSL03 only silences. The BESL03 does the same 13 dB job with a sintered ring but adds an adjustable exhaust throttle in the same 3/8in body, so one part replaces a silencer plus a separate exhaust flow control. Turning the adjuster also changes the body's effective length. It suits any circuit where the cylinder return speed is set by exhaust restriction rather than by metering the supply.
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