Airtac PAL Plastic Silencer PAL01D
The AirTAC Airtac PAL Plastic Silencer PAL01D 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.
- TypePlastic silencer
- SeriesPAL
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Noise reduction25 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 PAL Plastic Silencer PAL01D
Every stroke of a directional valve ends with a pressure pulse leaving the exhaust port, and that pulse is what your ears register as the crack of escaping air. The PAL01D screws onto a 1/8 in PT exhaust port and passes the air through a polyethylene-fibre element that breaks the pulse up before it leaves the body, cutting noise by 25 dB measured at 0.5 MPa. The top cover and body are moulded from POM, so the whole part is resin and there is no brass element to deform it or add mass.
The D suffix on this SKU means the top cover and body come in black rather than the standard natural colour, which suits panels and machines where a dark fitting blends into the housing. At 1/8 in it is the smallest port size the PAL series is made in, and it is the lightest way in the AirTAC range to buy a 25 dB reduction on a small valve.
Airtac PAL Plastic Silencer PAL01D Technical Specifications
| Model | Airtac PAL Plastic Silencer PAL01D |
|---|---|
| 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.
Model Code: Airtac PAL Plastic Silencer PAL01D
| 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. |
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 PAL Plastic Silencer PAL01D Is Used
Packing line valve bank
On a carton-packing conveyor the operators stand beside the valve manifold for a full shift, and every reject-station dump adds to the background crack. A 25 dB resin silencer on each 1/8 in exhaust port targets exactly that noise source.
Laboratory test bench
Bench-top test rigs in a lab or QC cell run intermittent cycles all day in a quiet room, where a bare exhaust port is the loudest thing present. The light POM body suits a small bench valve, and the black finish keeps the rig visually clean.
Pneumatic training rig
A classroom or apprenticeship trainer cycles small cylinders repeatedly while people stand close and talk over the rig. PAL01D fits the 1/8 in ports of the small valves such rigs use and removes the exhaust crack without adding metal parts to a light panel.
Is the Airtac PAL Plastic Silencer PAL01D the Right Part?
The choice between metal and resin comes down to one figure and one environment. Sintered-brass types such as the BSL series hold 13 dB but shrug off knocks, hot air and oily shop air; the PAL series holds 25 dB, so where the noise limit is the driver and the part will not be abused, resin wins. If the silencer sits where a trolley or a tool will hit it, step to a metal series instead and accept the lower figure.
PAL01D is the bottom of the PAL ladder: the series exists only in 1/8, 1/4, 3/8 and 1/2 in, and there is no M5 PAL, so 01 is the smallest you can buy. The single neighbour above it is PAL02 on a 1/4 in thread, which opens a wider exhaust path and suits a larger valve body. Match the silencer thread to the valve's exhaust port rather than sizing down - a silencer smaller than the port throttles the exhaust and drags out the return stroke of your cylinder.
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 PAL Plastic Silencer PAL01D FAQ
The PAL01D is a plastic exhaust silencer on a 1/8 in PT thread. 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 25 dB at 0.5 MPa, achieved by the polyethylene-fibre element inside the POM body, which is black on this D-suffix version.
No, and there is no smaller PAL to move to: the PAL series starts at 1/8 in and is not offered in M5. Adapting a silencer down from the port size with a reducer restricts the exhaust path and slows the cylinder's return stroke. If the port really is M5, choose a mini series that exists in M5, such as the BSLM or PALM on a 1/8 in thread, rather than stepping the PAL01D down.
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