{"product_id":"aro-ingersoll-rand-20311-2-pneumatic-breather-vent-muffler","title":"Aro\/ingersoll-rand 20311-2 Pneumatic Breather Vent Muffler","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ARO\/INGERSOLL-RAND 20311-2 is a breather vent muffler designed for pneumatic systems where exhaust air noise and particulate discharge must be controlled at vent ports. It threads directly into a 1\/4 inch Male NPT port and filters exhaust air through a 40-micron element, reducing noise and trapping contaminants before they enter the work environment. Constructed from stainless steel, the 20311-2 handles an operating temperature range of -25 degrees F to 200 degrees F, making it suitable for demanding industrial and production-floor pneumatic circuits. At 0.625 inches overall length, this is a compact inline solution for cylinder exhausts, directional control valves, and other pneumatic components with open vent ports.\u003c\/p\u003e\u003cp\u003eThis muffler is used wherever a pneumatic circuit requires a filtered, noise-dampened exhaust point. Typical applications include directional control valve exhaust ports, cylinder rod-end breather ports, and pneumatic timer or relay vent ports in light industrial, manufacturing, and automation environments. Licensed pneumatic system technicians and maintenance mechanics install this type of component during initial system assembly or as a replacement when an existing muffler becomes clogged or damaged. The small form factor fits installations where clearance around port connections is limited.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4 inch Male NPT thread for direct port installation without adapters\u003c\/li\u003e\n\u003cli\u003e40-micron filtration rating traps particulates in exhaust airflow\u003c\/li\u003e\n\u003cli\u003eStainless steel construction resists corrosion in washdown and humid environments\u003c\/li\u003e\n\u003cli\u003eOperating range of -25 degrees F to 200 degrees F suits a wide range of industrial conditions\u003c\/li\u003e\n\u003cli\u003e0.625 inches overall length provides a minimal footprint at the port\u003c\/li\u003e\n\u003cli\u003e9\/16 inch hex size allows installation and removal with a standard open-end wrench\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation breather vent muffler for pneumatic systems using 1\/4 inch Male NPT exhaust or vent ports.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a pneumatic system technician or qualified maintenance mechanic. Depressurize and lock out the pneumatic circuit completely before removing any existing muffler or fitting. Apply thread sealant appropriate for pneumatic service to the male NPT threads and tighten to snug using a 9\/16 inch wrench  -  do not overtighten stainless steel threads into aluminum manifold bodies. Inspect the muffler element periodically and replace when airflow restriction or contamination buildup is evident.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Male NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Type\u003c\/strong\u003e: Breather Vent Muffler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicron Rating\u003c\/strong\u003e: 40 microns\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 9\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Temperature\u003c\/strong\u003e: 200 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Temperature\u003c\/strong\u003e: -25 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.56 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 0.56 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 25173702\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ARO\/INGERSOLL-RAND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 20311-2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARO","offers":[{"title":"Default Title","offer_id":67909393219890,"sku":"20311-2","price":25.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3566f73dfc18d406901344b636d5ca4e.jpg?v=1791186944","url":"https:\/\/voomisupply.com\/products\/aro-ingersoll-rand-20311-2-pneumatic-breather-vent-muffler","provider":"Voomi Supply","version":"1.0","type":"link"}