Airtac PAL Plastic Silencer PAL04
The AirTAC Airtac PAL Plastic Silencer PAL04 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 PAL04
Every stroke of a directional valve ends with a pressure pulse being dumped to atmosphere, and that pulse is what you hear as the crack of exhaust air. The PAL04 screws into a 1/2in PT exhaust port and breaks that pulse up through a polyethylene-fibre element, dropping noise by 25 dB at 0.5 MPa - the higher of the two figures AirTAC publishes across its silencer range.
The PAL is an all-resin construction: a POM top cover and body over the fibre element. That makes it the lightest silencer in the catalogue and immune to rust on wet or washed-down valves. AirTAC also lists a D suffix for this series, so the same part can be ordered in black when a dark cover looks better on exposed valve banks.
Airtac PAL Plastic Silencer PAL04 Technical Specifications
| Model | Airtac PAL Plastic Silencer PAL04 |
|---|---|
| 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 PAL04
| 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 PAL04 Is Used
Packing line valve bank
On a carton-form-fill-seal line the operators stand beside the valve manifold for a whole shift, and every cylinder dump adds to the noise dose. A 25 dB resin silencer on each 1/2in exhaust port turns the repeated crack into a low hiss at ear height.
Trailer tail-lift and tipper controls
Hydraulic power-pack valves on curtain-sider tail lifts exhaust to atmosphere right at the driver's head when the body is lowered. The PAL04's POM body shrugs off road salt and wash-down where a bare brass canister would pit, while still cutting the loudest single event of the cycle.
Meeting a workshop noise limit
When a plant is brought under a workplace noise assessment, exhaust ports are usually the cheapest wins first. Fitting PAL04s to the 1/2in ports of the big press and clamp cylinders removes the sharpest impulses from the survey meter before anyone looks at guarding or enclosures.
Is the Airtac PAL Plastic Silencer PAL04 the Right Part?
Choose by noise first. Resin PAL parts silence to 25 dB where the sintered-brass BSL and BESL families reach 13 dB, so pick the PAL04 where operators work close to the exhaust or a noise limit is in force. Pick metal instead where the silencer will take knocks, run in hot oily air, or need to shrug off rough handling - resin wins on quiet, brass on toughness.
The PAL04 is the top of its ladder. PAL runs from 1/8in (PAL01) through 1/4in and 3/8in up to this 1/2in, so the only neighbour below is the PAL03 at 3/8in; stepping down buys nothing but costs exhaust area on a big valve. Never size below the valve's exhaust port - an undersized silencer throttles the dump and stretches the return stroke. Note that PAL starts at 1/8in: there is no M5 option, and the mini PALM stops at 1/4in.
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 PAL04 FAQ
The PAL04 is a plastic exhaust silencer with a 1/2in PT thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it tolerates vacuum down to -750 mmHg (10 Torr) on the same port, proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. Noise reduction is 25 dB at 0.5 MPa, achieved by a polyethylene-fibre element inside a POM body.
Yes. The PAL series is rated for negative pressure down to -750 mmHg (10 Torr), so it can be fitted to the exhaust of a vacuum ejector that pulses between pressure and vacuum. Keep the resin element clean and dry on the vacuum side - a clogged or soaked fibre element restricts the dump, slows the venturi and drags down the vacuum level the pump can reach.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard parts are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Silencers
Request a Quote for Airtac PAL Plastic Silencer PAL04
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.