{"product_id":"beltguard-aftercooler-bgac2m-50cfm-15hp","title":"Beltguard Aftercooler - BGAC2M – 50cfm (15hp)","description":"\u003cp\u003eThe Castair BGAC2M is a 50 CFM belt guard aftercooler rated for 15 HP reciprocating air compressors. This listing makes the horsepower and CFM rating explicit — this is the same BGAC2M mounted aftercooler assembly, specified here as the 50 CFM \/ 15 HP configuration so there is no ambiguity when ordering for a specific compressor. It cools compressor discharge air to within 15°F of ambient temperature and reduces water content in the compressed air stream by up to 65%.\u003c\/p\u003e\n\n\u003cp\u003eThe mounted design means the aftercooler core comes pre-assembled on a belt guard mounting panel. It bolts directly onto the belt guard of your 15 HP reciprocating compressor and sits in the path of the flywheel fan''s cooling airflow. Plumb the compressor discharge to the 1 in NPT inlet, run the outlet to your receiver tank, and the aftercooler is operational. No bracket fabrication, no custom positioning.\u003c\/p\u003e\n\n\u003cp\u003eIf you are shopping this listing because you specifically searched for a 50 CFM aftercooler for a 15 HP compressor, this is the correct unit. The BGAC2M handles that exact application.\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 — explicitly rated for 15 HP reciprocating compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower Match:\u003c\/strong\u003e 15 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Inlet Air Temperature:\u003c\/strong\u003e 250°F\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 compressor 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\u003eWhy 65%:\u003c\/strong\u003e Water content in compressed air drops approximately 50% for every 20°F temperature reduction. The BGAC2M typically reduces air temperature by 150–200°F, which yields the 65% moisture reduction figure. The exact amount depends on ambient conditions and actual inlet temperature.\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\u003eCore 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 belt guard mounting panel, ready for direct compressor installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $611.95\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Add an Aftercooler to a 15 HP Compressor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe moisture problem:\u003c\/strong\u003e A 15 HP reciprocating compressor running at 100 PSIG and 50 CFM passes a significant volume of air through the compression cycle. At discharge temperatures of 200–350°F, nearly all the water vapor in that air stays airborne. It travels into your receiver tank, your distribution lines, and your tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat that moisture does:\u003c\/strong\u003e Water in compressed air causes rust inside receiver tanks, valve failure in pneumatic controls, water in spray gun air (which ruins paint finishes), corrosion in air tools, and water spray from blow guns. All of these are symptoms of the same root cause — uncooled, wet compressed air.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat the aftercooler does:\u003c\/strong\u003e The BGAC2M cools the discharge air to near ambient temperature immediately after it leaves the compressor cylinder head. At ambient temperature, most of the water vapor condenses into liquid and can be drained off before it enters the distribution system. A downstream moisture separator catches the condensate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe correct sequence:\u003c\/strong\u003e Compressor discharge → BGAC2M aftercooler → moisture separator with drain → receiver tank → distribution system. This sequence handles the moisture where it is easiest to manage — at the source — rather than trying to clean it up throughout the distribution system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow the Mounted Design Works\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt guard positioning:\u003c\/strong\u003e The mounting panel positions the aftercooler core directly in the compressor flywheel fan''s airflow. The fan runs whenever the compressor runs, continuously pulling ambient air across the core fins and removing heat from the compressed air passing through the internal passages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo external power:\u003c\/strong\u003e The cooling fan is the compressor''s own flywheel fan. No separate blower motor, no additional electrical connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact footprint:\u003c\/strong\u003e Mounting directly on the belt guard keeps the aftercooler close to the compressor frame and minimizes the length of high-temperature discharge piping needed between the cylinder head and the aftercooler inlet.\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 mounting:\u003c\/strong\u003e The BGAC2M mounts to the belt guard panel of a standard 15 HP reciprocating compressor. Verify your compressor frame and belt guard dimensions are compatible — call 866-217-0063 if you need fitment confirmation for a specific model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-temperature discharge plumbing:\u003c\/strong\u003e The section from the compressor cylinder head discharge port to the aftercooler inlet must be plumbed with materials rated for 250 PSIG and 350°F — hard copper or steel pipe, or high-temperature flexible hose. Standard rubber air hose is not rated for this temperature range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet plumbing:\u003c\/strong\u003e Air leaving the aftercooler is near ambient temperature. Standard compressed air fittings and hose are appropriate on the outlet side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondensate drain:\u003c\/strong\u003e Install a moisture separator with an automatic float drain at the aftercooler outlet. This captures the condensate and removes it from the system without manual attention. A manual ball valve drain works but requires scheduled operation.\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\u003eHP Rating:\u003c\/strong\u003e 15 HP\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\u003eConfiguration:\u003c\/strong\u003e Mounted (pre-assembled to belt guard mounting panel)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $611.95\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Configurations — Full BGAC Series Lineup\u003c\/h3\u003e\n\u003cp\u003eCast Air makes belt guard aftercoolers in four sizes. Choose based on your compressor''s horsepower and CFM output:\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 as loose core (BGAC2, $464.31), mounted assembly (BGAC2M, $611.95), or kit with hardware (BGAC2K). Duplex version: 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\u003eThe BGAC2M is sized specifically for 15 HP. Do not use a 35 CFM BGAC1 core on a 15 HP machine — the air velocity through the undersized core will be too high for adequate cooling. The BGAC3 series (75 CFM) is appropriate for 20 HP and above.\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\u003eBGAC2M is correct for you if:\u003c\/strong\u003e You have a 15 HP reciprocating compressor, you are seeing moisture downstream (water in lines, tool failures, rusty tanks, water in spray air), and you want a factory-mounted aftercooler that installs directly on the belt guard without custom fabrication work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose BGAC2 (loose core) instead if:\u003c\/strong\u003e You are doing a custom installation, replacing an existing core, or your compressor''s belt guard geometry does not match the standard BGAC2M mounting panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose BGAC2K instead if:\u003c\/strong\u003e You want the aftercooler core plus mounting hardware but prefer to do the final assembly and installation yourself rather than receiving a pre-assembled unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose BGAC2x2M instead if:\u003c\/strong\u003e You have a duplex (twin-pump) compressor with two discharge points, or if your system requires 100 CFM total aftercooling capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep down to BGAC1M if:\u003c\/strong\u003e Your compressor is 10 HP or smaller.\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 consistently running a 15 HP machine at maximum capacity in high ambient temperature conditions and want more 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 is our specialty — compressors, aftercoolers, dryers, separators, and accessories. Not a general industrial distributor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping:\u003c\/strong\u003e All 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 confirm this unit fits your specific compressor model, explain the full installation sequence, and help you plan condensate drain placement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull manufacturer warranty:\u003c\/strong\u003e Cast Air factory warranty. No gray-market or diverted stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizing honesty:\u003c\/strong\u003e If the BGAC2M is not the right aftercooler for your compressor, we will say so before you order.\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":53343205982421,"sku":"BGAC2M – 50cfm (15hp)","price":611.95,"currency_code":"USD","in_stock":false}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/beltguard-aftercooler-bgac2m-50cfm-15hp","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}