{"product_id":"castair-3-8-muffler-m38","title":"Castair 3\/8\" Muffler M38","description":"\u003cp\u003eThe Castair 3\/8\" Muffler (M38) reduces exhaust noise from the unloader or intake on a compressed air system. On a reciprocating piston compressor, the intake valve pulls in ambient air every downstroke — without a muffler on the intake filter or the unloader port, that cycling creates a sharp, repetitive noise that adds up to significant sound levels in a shop. The M38 threads onto a 3\/8\" NPT port and attenuates that intake or exhaust pulse noise without restricting airflow.\u003c\/p\u003e\n\n\u003ch3\u003eWhat This Muffler Does\u003c\/h3\u003e\n\u003cp\u003eAir compressor mufflers work by routing the exhaust or intake pulse through a sintered or baffled element that breaks up the pressure wave and converts it to heat and friction rather than sound. The M38 handles 3\/8\" ported applications — typically the compressor intake or the unloader valve exhaust. Unloader valves vent compressed air when the compressor cycles off-load; without a muffler, that venting is loud. The M38 quiets that exhaust pulse. On intake applications, it reduces the snorkel noise of air being drawn through the valve on each piston downstroke.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3\/8\" NPT Thread:\u003c\/strong\u003e Standard thread size — fits directly into 3\/8\" NPT ports on compressor intakes and unloaders\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNoise Attenuation:\u003c\/strong\u003e Reduces high-frequency exhaust and intake pulse noise without meaningfully restricting airflow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCast Air Part:\u003c\/strong\u003e Sourced from Cast Air's compressor accessories line for correct fit with their equipment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Size:\u003c\/strong\u003e Threads in close to the port — doesn't add significant clearance requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e M38\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 3\/8\" NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Exhaust \/ Intake Muffler\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $13.09\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Manufacturer's product page was unavailable at time of writing. Confirm thread size and application compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompressor intake filter port — quiets air draw noise on each piston downstroke\u003c\/li\u003e\n  \u003cli\u003eUnloader valve exhaust port — reduces the sharp venting noise when the compressor cycles off\u003c\/li\u003e\n  \u003cli\u003ePressure switch exhaust vent on reciprocating compressors\u003c\/li\u003e\n  \u003cli\u003eAny 3\/8\" NPT exhaust port in an air system where noise reduction is needed\u003c\/li\u003e\n  \u003cli\u003eReplacement for worn or clogged mufflers on existing Cast Air compressors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From OEM Diagnostic Tools?\u003c\/h3\u003e\n\u003cp\u003eWe stock Cast Air accessories and replacement parts including mufflers, fittings, and maintenance components. We've been serving shops and industrial facilities since 2016. At $13.09, the M38 is a straightforward fix for a compressor that's gotten louder than it should be. Free shipping on qualifying orders. Call us if you need help confirming the right muffler for your application.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342571659477,"sku":"M38","price":24.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/360_F_473254957_bxG9yf4ly7OBO5I0O5KABlN930GwaMQz_137a6167-a56f-4f32-bfaf-4f1563210673.jpg?v=1772652736","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-3-8-muffler-m38","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}