{"product_id":"castair-bgac2m","title":"Castair BGAC2M","description":"\u003cp\u003eThe Castair BGAC2M is a 50 CFM belt guard aftercooler built to mount directly on the belt guard of a 15 HP reciprocating air compressor. Unlike the loose BGAC2 core, the BGAC2M comes as a pre-mounted assembly — it bolts onto the compressor belt guard panel and sits in the direct airflow from the flywheel fan. Plumb the compressor discharge to the 1 in NPT inlet, run the outlet to your receiver, and you have an aftercooler system that requires no custom fabrication or bracket work.\u003c\/p\u003e\n\n\u003cp\u003eThe purpose is straightforward: compressed air leaving a reciprocating compressor cylinder can be 200–350°F. At those temperatures, virtually all the water vapor stays airborne and travels downstream into your tank, lines, and tools. The BGAC2M drops that temperature to within 15°F of ambient, causing the water vapor to condense and drop out of the air stream before it reaches your equipment. The result is up to 65% less moisture in your compressed air system.\u003c\/p\u003e\n\n\u003ch3\u003eCore Performance Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM Rating:\u003c\/strong\u003e 50 CFM — sized for 15 HP reciprocating compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Inlet Air Temperature:\u003c\/strong\u003e 250°F (performance figures based on this inlet condition)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Operating Pressure:\u003c\/strong\u003e 250 PSIG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Operating Temperature:\u003c\/strong\u003e 350°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling Performance:\u003c\/strong\u003e Cools discharge air to within 15°F above ambient temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture Reduction:\u003c\/strong\u003e Up to 65% reduction in water content\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture physics:\u003c\/strong\u003e Water content in compressed air decreases by approximately 50% for every 20°F drop in temperature. A 150–200°F temperature drop delivers the 65% moisture reduction figure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePhysical Dimensions and Connections\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftercooler Core Size:\u003c\/strong\u003e 18 in L x 14-1\/4 in W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection:\u003c\/strong\u003e 1 in NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection:\u003c\/strong\u003e 1 in NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 12 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Mounted — pre-assembled to a belt guard mounting panel for direct installation on the compressor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy the Mounted Configuration\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose-built fitment:\u003c\/strong\u003e The BGAC2M is designed to attach directly to the belt guard of a standard 15 HP reciprocating compressor. The mounting panel positions the aftercooler core squarely in the flywheel fan''s cooling airflow — which is exactly where it needs to be for maximum heat transfer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo bracket fabrication:\u003c\/strong\u003e The loose BGAC2 core requires you to fabricate or source a mount and position it correctly relative to the fan. The BGAC2M eliminates that step. Bolt it on, plumb it in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow optimization:\u003c\/strong\u003e Factory positioning means the core is in the right place relative to the fan blades. A poorly positioned aftercooler — even with the same core — will underperform because it is not getting adequate airflow across the fins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean installation:\u003c\/strong\u003e Integrated mounting keeps the aftercooler compact and close to the compressor frame, reducing the length of high-temperature discharge piping required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow Belt Guard Aftercoolers Work\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-cooled operation:\u003c\/strong\u003e The BGAC2M uses the compressor''s own flywheel fan to move cooling air across the aftercooler core. No external blower or utility power connection required beyond what the compressor already runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge-point cooling:\u003c\/strong\u003e Hot compressed air from the cylinder head flows into the aftercooler inlet immediately after leaving the compressor. Cooling happens before the air enters the receiver tank — so condensation happens at the aftercooler, not inside your tank and distribution lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondensate management:\u003c\/strong\u003e Pair the BGAC2M with a moisture separator at the outlet and an automatic or manual condensate drain. The aftercooler drops the temperature and causes condensation; the separator and drain remove that liquid from the system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt-on to belt guard:\u003c\/strong\u003e The BGAC2M mounts to the existing belt guard panel of the compressor. Confirm your compressor frame and belt guard dimensions are compatible before ordering — call us at 866-217-0063 if you need help verifying fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlumbing:\u003c\/strong\u003e Use high-temperature hose or hard pipe rated for 250 PSIG and 350°F on the discharge side between the cylinder head outlet and the BGAC2M inlet. The outlet side runs at much lower temperatures and standard compressed air fittings are appropriate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondensate drain:\u003c\/strong\u003e Install a drain valve at the lowest point in the system after the aftercooler. An automatic float-type drain is preferred for continuous operation so you are not manually draining on a schedule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIf you need a loose core for a custom install:\u003c\/strong\u003e Order the BGAC2 instead. If you need the core plus mounting hardware but want to do the installation yourself, order the BGAC2K kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e BGAC2M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air (Castair)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM Capacity:\u003c\/strong\u003e 50 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Dimensions:\u003c\/strong\u003e 18 in L x 14-1\/4 in W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection:\u003c\/strong\u003e 1 in NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection:\u003c\/strong\u003e 1 in NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 12 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Pressure:\u003c\/strong\u003e 250 PSIG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Temperature:\u003c\/strong\u003e 350°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Inlet Temperature:\u003c\/strong\u003e 250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling to:\u003c\/strong\u003e Within 15°F of ambient temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture Reduction:\u003c\/strong\u003e Up to 65%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompressor Match:\u003c\/strong\u003e 15 HP reciprocating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Mounted (pre-assembled to belt guard mounting panel)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Configurations — Full BGAC Series Lineup\u003c\/h3\u003e\n\u003cp\u003eCast Air belt guard aftercoolers are available in four sizes. Match the aftercooler to your compressor horsepower:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBGAC1 \/ BGAC1M — 35 CFM:\u003c\/strong\u003e 18 in x 10-1\/2 in core, 3\/4 in NPT connections, 8 lbs. Fits 5, 7, and 10 HP compressors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBGAC2 \/ BGAC2M — 50 CFM (this unit):\u003c\/strong\u003e 18 in x 14-1\/4 in core, 1 in NPT connections, 12 lbs. Fits 15 HP. Available loose (BGAC2), mounted (BGAC2M), kit (BGAC2K), or duplex (BGAC2x2M).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBGAC3 \/ BGAC3M — 75 CFM:\u003c\/strong\u003e 24 in x 20-1\/2 in core, 1 in NPT connections, 20 lbs. Fits 20+ HP compressors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBGAC4 \/ BGAC4M — 100 CFM:\u003c\/strong\u003e 23 in x 26-1\/2 in core, 1 in NPT connections, 25 lbs. For larger systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not undersize. A 35 CFM BGAC1 on a 15 HP compressor will not cool effectively — the air velocity through the core is too high for adequate heat transfer. Match CFM rating to your compressor''s actual output at your working pressure.\u003c\/p\u003e\n\n\u003ch3\u003eWhen Does a Shop Need This vs. Stepping Up or Down\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe BGAC2M is correct for you if:\u003c\/strong\u003e You have a 15 HP reciprocating compressor and want a factory-mounted aftercooler that installs directly on the belt guard with no custom fabrication. Moisture problems downstream — water in lines, tool failures, rusty tank interiors — are the trigger to add an aftercooler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose BGAC2 (loose) instead if:\u003c\/strong\u003e You are doing a custom installation, replacing a core in an existing housing, or your belt guard geometry does not match the standard BGAC2M panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose BGAC2K instead if:\u003c\/strong\u003e You want the aftercooler core plus mounting hardware\/brackets but plan to do the final installation yourself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose BGAC2x2M instead if:\u003c\/strong\u003e You have a duplex (twin-pump) compressor setup and need aftercooler coverage on both discharge lines simultaneously, or if your total system needs 100 CFM of aftercooling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep down to BGAC1M if:\u003c\/strong\u003e Your compressor is 10 HP or smaller. Using a 50 CFM core on a smaller machine is not harmful but wastes money on unnecessary core area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep up to BGAC3M if:\u003c\/strong\u003e Your compressor is rated above 15 HP, or if you are running a 15 HP machine in an exceptionally hot environment where you want additional cooling margin.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialist since 2016:\u003c\/strong\u003e Compressed air equipment — compressors, aftercoolers, dryers, separators, accessories — is our focus. Not a general industrial catalog.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping:\u003c\/strong\u003e Orders to the continental United States ship free.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree tech support:\u003c\/strong\u003e Call 866-217-0063. We can verify fitment to your specific compressor model, confirm connection sizing, and help you plan the full installation including drain and separator placement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull manufacturer warranty:\u003c\/strong\u003e Cast Air factory warranty on all BGAC series aftercoolers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonest sizing advice:\u003c\/strong\u003e If the BGAC2M is wrong for your application, we will tell you before you buy it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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":53342518837461,"sku":"BGAC2M","price":1681.28,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-bgac2m","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}