Airtac BESL Throttle Type Silencer BESL01
The AirTAC Airtac BESL Throttle Type Silencer BESL01 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
About the Airtac BESL Throttle Type Silencer BESL01
Every time a valve dumps its downstream air, the escaping pulse cracks loudly enough to dominate a workshop. The BESL01 screws onto a 1/8in PT exhaust port and breaks that pulse up inside a brass-particle sintered silencer ring, dropping the noise to 13 dB at 0.5 MPa.
What separates the BESL family from a plain BSL is the built-in adjustable exhaust throttle in the aluminium-alloy body. Turn it and you meter the air leaving the cylinder, so the same single part quiets the valve and sets the return-stroke speed - no separate flow control valve, no extra fitting, no extra leak points. The body itself is length-adjustable: this 01 size spans 33 mm at minimum to 40.5 mm at maximum.
Airtac BESL Throttle Type Silencer BESL01 Technical Specifications
| Model | Airtac BESL Throttle Type Silencer BESL01 |
|---|---|
| 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 BESL01
| 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 BESL01 Is Used
Bench press return-stroke tuning
On a small pneumatic bench press, the operator needs the ram to retract slowly for part ejection. BESL01 on the valve exhaust sets that retract speed with its built-in throttle while cutting the 1/8in port noise at the same time.
Compact valve manifold retrofits
Space on a compact 5/2 valve with 1/8in ports is tight. BESL01 shortens to 33 mm when clearance is limited and extends to 40.5 mm when it is not, so the exhaust solution adapts to the manifold layout.
End-of-line test rigs
A leak-test or cycle-test station cycles valves hundreds of times per hour right next to the technician. Fitting BESL01 to each exhaust removes the crack of every dump and lets the technician slow each cycle individually at the port.
Is the Airtac BESL Throttle Type Silencer BESL01 the Right Part?
Choose BESL01 when you want silencing and exhaust-speed control in one 1/8in part - ideal on a small cylinder or valve where a return stroke must be slowed but a needle valve on the supply would also throttle the power stroke. The BESL ladder runs 01 to 04 only, so there is no M5 step below this: BESL01 is the smallest in the series, and the next size up is BESL02 on a 1/4in thread. Stepping up buys a larger exhaust aperture for bigger valve ports; stepping down does not exist here, so do not undersize a 1/4in port down to this fitting just to fit - a throttling silencer starved of area slows the stroke before you ever turn the adjuster. Metal sintered construction is the right call where the part will be knocked by trolleys, run hot, or sit in oil mist; pick the resin PAL family only when maximum noise reduction matters more than impact toughness.
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 BESL01 FAQ
BESL01 is a throttling silencer with a 1/8in PT thread and an adjustable body 33 to 40.5 mm long. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it tolerates negative pressure down to -750 mmHg (10 Torr), proof pressure is 1.5 MPa, and the working temperature range is -20 to +70 C. Noise reduction is 13 dB at 0.5 MPa via the sintered brass ring.
Turn the adjusting section on the aluminium body: closing the internal throttle restricts the air leaving the cylinder, which slows the return stroke, while opening it lets the cylinder dump freely for maximum speed. Because the metering is at the exhaust, the supply stroke is unaffected - unlike a supply-side needle valve. Set it after the silencer is fitted, since a partially closed adjuster also reduces the effective exhaust area, and always start from a size matched to the valve port.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard parts usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Silencers
Request a Quote for Airtac BESL Throttle Type Silencer BESL01
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.