
The AirTAC Airtac PAL Plastic Silencer PAL01 is a genuine plastic silencer that cuts exhaust noise by 25 dB at 0.5 MPa using a polyethylene-fibre filter in a POM body.
A silencer sits on the exhaust port of a directional valve and breaks up the pressure pulse that would otherwise leave as a sharp crack of escaping air. The PAL01 does this with a polyethylene-fibre element and reaches 25 dB of noise reduction at 0.5 MPa, which is the higher of the two figures AirTAC publishes for its silencer range.
The body and top cover are moulded in POM, so the part is light and will not corrode in damp ambient air. It screws onto a 1/8in PT thread (size code 01). The PAL series is resin-only, and PAL01 is the smallest threaded size it comes in - there is no M5 version of this series, so 1/8in is the entry point.
| Model | Airtac PAL Plastic Silencer PAL01 |
|---|---|
| Type | Plastic silencer |
| Series | PAL |
| Noise reduction | 25 dB at 0.5 MPa |
| Element | Polyethylene-fibre filter in a pom 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.
| PAL | Plastic silencer. |
|---|---|
| 01 / 02 / 03 / 04 | Thread: 1/8", 1/4", 3/8", 1/2". M5 where the series offers it. |
| D | Black. Blank = grey. |
Sampling and fluid-handling valves inside lab instruments exhaust inside a housing where every decibel carries. The PAL01's 1/8in PT thread fits the small solenoid valves typically used, and its 25 dB resin element keeps audible clicks out of recordings.
Operators at semi-automatic labellers stand within a metre of the valve all shift. Fitting PAL01 to each 1/8in exhaust port removes the repeated air crack without adding metal parts that could mark product if dropped.
When a workplace noise assessment flags pneumatic exhaust, the cheapest fix is at the valve ports. On a compact fixture with 1/8in exhausts, PAL01 mufflers contribute 25 dB of reduction each at 0.5 MPa and weigh almost nothing.
Choose resin when noise is the priority: PAL cuts 25 dB where a sintered-brass BSL in the same 1/8in thread manages 13 dB. The trade is robustness - metal survives knocks, hot oily exhaust and dirty plant air better than a fibre element, so reserve PAL for sheltered or noise-critical positions. If you also need to throttle the exhaust speed, step to the BESL01 throttling silencer instead, which combines a sintered ring with an adjustable valve.
PAL01 is the smallest size in the ladder; the next step up is PAL02 (1/4in PT). Size the silencer to the valve's exhaust port rather than down - an undersized or clogged muffler restricts exhaust flow and visibly slows the cylinder's return stroke.
Quick checklist
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. Noise reduction is 25 dB at 0.5 MPa from the polyethylene-fibre element. This SKU is size code 01, which is a 1/8in PT male thread. The body and top cover are POM resin.
PAL runs from PAL01 (1/8in) through PAL02 (1/4in) to PAL03 (3/8in) and PAL04 (1/2in). There is no M5 version of this series, so PAL01 is the smallest thread available. Any size can be ordered with a D suffix for a black top cover and body instead of the standard colour. If your valve exhaust is a tube stub rather than a thread, the PPA plug-in silencer pushes onto 6-12 mm tube instead.
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