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SMC Pneumatic silencer AN40-04
Home > SMC > Pneumatic Accessories > AN40-04 Need SMC AN40-04? Pneumatic silencer for Pneumatic systems / solenoid valve exhaust ports. Supplied with …
Specifications
| Brand | SMC |
|---|---|
| Model Number | AN40-04 |
| Official Product Name | Silencer, Compact Resin Type, Male Thread (Series AN) |
| Applicable System | Pneumatic systems / solenoid valve exhaust ports |
| Product Type | Pneumatic silencer (muffler) |
| Equivalent Standard | Contact us for cross-reference and alternative models |
| Product Status | In Stock |
| Noise reduction | 30 dB(A) |
| Effective area | 90 mm2 |
| Sonic conductance C | 18 dm3/(s·bar) |
| Recommended flow | 8.0 m3/min (ANR) or less |
| Maximum operating pressure | 1.0 MPa |
| Ambient & fluid temperature | 5 to 60 °C (down to -10 °C if no risk of freezing) |
| Body material | Resin |
| Overall length | 68 mm |
| Hex size | 21 mm |
| Thread standard | R (BSPT) |
| Port size | R 1/2 (male thread, BSPT) |
Product Description
It screws directly into the exhaust port of a solenoid valve or manifold using its R 1/2 male thread and reduces exhaust noise by around 30 dB(A). With a 90 mm2 effective area and a maximum operating pressure of 1.0 MPa, it handles the airflow of larger valves while keeping machine noise down. Its durable resin construction is suited to automation, packaging and general pneumatic machinery. The SMC AN40-04 is a compact resin-body pneumatic silencer, also called a muffler, from the AN series.
Basic Product Information
- Noise reduction of approximately 30 dB(A)
- R 1/2 male threaded inlet for direct mounting
- Effective area of 90 mm2 with sonic conductance 18 dm3/(s·bar)
- Maximum operating pressure of 1.0 MPa
- RoHS compliant, typically manufactured in Japan
- Compact resin-body silencer for pneumatic exhaust ports
Technical Specifications
Version & Model Difference
Within the AN compact resin silencer series, models run from AN05-M5 up to AN40-04. The AN40-04 is the largest size, offering a 1/2 R port and the highest effective area (90 mm2). The series also includes high-noise-reduction and metal-case styles where more demanding exhaust ports are involved. Select the port size to match the valve or manifold thread.
Application Scenarios
- Noise control on pneumatic valves and cylinders
- Exhaust silencing on automation and assembly machines
- Packaging, electronics and mechanical equipment
- High-pressure compressed-air exhaust lines
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Frequently Asked Questions
What port size does the AN40-04 have?
It has an R 1/2 male threaded inlet (BSPT), suitable for direct mounting into a matching exhaust port.
How much noise does it reduce?
The AN40-04 provides approximately 30 dB(A) noise reduction, which can vary with the pneumatic circuit and exhaust pressure.
What is the maximum working pressure?
1.0 MPa (about 10 bar) inlet pressure, with an operating temperature range of 5 to 60 °C.
Is it a genuine SMC part?
Yes, AN series silencers are RoHS compliant SMC products that are typically manufactured in Japan.
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