{"product_id":"castair-bgac3m","title":"Castair BGAC3M","description":"\u003cp\u003eThe Castair BGAC3M is the compressor-mounted version of the BGAC3 belt guard aftercooler — rated at 75 CFM and built for reciprocating compressors in the 20 HP and larger class. The M designation means this unit ships configured for direct mounting to the compressor frame, as opposed to the BGAC3 loose unit which is installed independently. The core performance is identical: 75 CFM capacity, 1\" NPT connections, 250 PSIG maximum pressure, and the ability to cool discharge air to within 15°F above ambient while removing up to 65% of moisture from the airstream.\u003c\/p\u003e\n\n\u003cp\u003eIf you are ordering a Castair compressor with aftercooling integrated into the assembly, or replacing an existing mounted aftercooler on a 20 HP or larger unit, the BGAC3M is the correct part. For standalone field installations or retrofit applications, the BGAC3 loose unit is the correct choice.\u003c\/p\u003e\n\n\u003ch3\u003eWhat an Aftercooler Does and Why It Matters at 20 HP and Above\u003c\/h3\u003e\n\u003cp\u003eA reciprocating compressor at 20 HP or larger produces substantial heat in the discharge air — temperatures at the pump head routinely reach 250°F. At that temperature, water vapor stays suspended in the airstream. Without an aftercooler intercepting it at the source, that moisture rides the hot air into the tank, corrodes the interior, and continues downstream through the distribution lines into tools, valves, cylinders, and spray equipment.\u003c\/p\u003e\n\u003cp\u003eThe BGAC3M mounts within the belt guard assembly and intercepts the discharge air before it reaches the tank. Ambient shop airflow — from the compressor flywheel or a dedicated fan — passes over the finned core and drops the air temperature rapidly. Water vapor condenses, collects at the bottom of the aftercooler, and drains away. What passes through to the tank is cooler and significantly drier.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature reduction:\u003c\/strong\u003e Cools compressed air to within 15°F above ambient temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture removal:\u003c\/strong\u003e Eliminates up to 65% of water content before it reaches the tank and distribution system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo cooling water connection:\u003c\/strong\u003e Air-to-air design — only connections are the 1\" NPT air inlet and outlet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank corrosion protection:\u003c\/strong\u003e Moisture kept out of the tank extends tank service life substantially\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDownstream equipment protection:\u003c\/strong\u003e Cooler, drier air reduces wear and water damage to pneumatic tools, valves, and cylinders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesign and Construction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompressor-mounted configuration:\u003c\/strong\u003e Ships ready for direct mounting to the Castair compressor frame — the M suffix distinguishes this from the BGAC3 loose unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt guard integration:\u003c\/strong\u003e Mounts within the belt guard structure for a compact, protected installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\" NPT connections:\u003c\/strong\u003e Standard 1\" NPT inlet and outlet matching the discharge plumbing of 20 HP and larger reciprocating compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-pressure rating:\u003c\/strong\u003e 250 PSIG maximum operating pressure — handles the full output pressure of industrial reciprocating compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-temperature rating:\u003c\/strong\u003e 350°F maximum operating temperature — rated for the actual discharge temperatures produced by larger pump heads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance basis:\u003c\/strong\u003e All ratings tested at 250°F inlet air temperature — real compressor discharge conditions, not laboratory ambient\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 BGAC3M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM Rating:\u003c\/strong\u003e 75 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 24\" L x 20-1\/2\" W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 20 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection:\u003c\/strong\u003e 1\" NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection:\u003c\/strong\u003e 1\" NPT\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\u003eOutlet Temperature:\u003c\/strong\u003e Within 15°F of ambient\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture Reduction:\u003c\/strong\u003e Up to 65%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Basis:\u003c\/strong\u003e 250°F inlet air temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Compressor-mounted (M suffix)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Model:\u003c\/strong\u003e BGAC3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompressor Fit:\u003c\/strong\u003e 20 HP and larger reciprocating compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air (Castair)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Configurations — BGAC Series Aftercooler Lineup\u003c\/h3\u003e\n\u003cp\u003eCastair produces the BGAC series in four sizes, each sized for a different compressor output range. Each size is available in both a loose unit and a compressor-mounted version.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBGAC1 \/ BGAC1M:\u003c\/strong\u003e 35 CFM — 18\" x 10-1\/2\", 3\/4\" NPT connections, 8 lbs — fits 5, 7, and 10 HP compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBGAC2 \/ BGAC2M:\u003c\/strong\u003e 50 CFM — 18\" x 14-1\/4\", 1\" NPT connections, 12 lbs — fits 15 HP compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBGAC3 \/ BGAC3M:\u003c\/strong\u003e 75 CFM — 24\" x 20-1\/2\", 1\" NPT connections, 20 lbs — fits 20 HP and larger compressors (this unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBGAC4 \/ BGAC4M:\u003c\/strong\u003e 100 CFM — 23\" x 26-1\/2\", 1\" NPT connections, 25 lbs — for high-output systems above 75 CFM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe BGAC3 is the loose unit. The BGAC3M is this compressor-mounted version. If you are replacing an existing mounted aftercooler, confirm whether your original unit was the M configuration before ordering. Call 866-217-0063 if you need help confirming which version you have.\u003c\/p\u003e\n\n\u003ch3\u003eWhen Does a Shop Need the BGAC3M vs. the BGAC3 or Another Size?\u003c\/h3\u003e\n\u003cp\u003eThe BGAC3M is the correct part when you need a 75 CFM aftercooler that ships in a compressor-mount configuration. Common scenarios:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompressor assembly order:\u003c\/strong\u003e You are ordering a Castair compressor and need the aftercooler to come pre-mounted — the M version is the right configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect replacement:\u003c\/strong\u003e The existing BGAC3M on your compressor is damaged and needs replacement — order the same M configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOriginal compressor spec:\u003c\/strong\u003e Your Castair unit was built with the BGAC3M from the factory — the M configuration ensures correct mounting alignment and bracket fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you are doing a field retrofit installation and the aftercooler will be independently mounted rather than on the compressor frame, the BGAC3 loose unit is the more flexible option. If your compressor produces more than 75 CFM, move up to the BGAC4M. Call us to confirm the right configuration for your installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe have been specializing in air compressor parts, components, and accessories since 2016. We stock the full Castair BGAC series in both loose unit and compressor-mounted configurations. When you call, you reach someone who can confirm whether you need the BGAC3 or BGAC3M for your specific application — not a general order line.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e on qualifying orders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree technical support\u003c\/strong\u003e at 866-217-0063 — fitment confirmation before you order\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull manufacturer warranty\u003c\/strong\u003e on all Castair products\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonest guidance\u003c\/strong\u003e — if the BGAC3 loose unit works better for your installation, we will tell you\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":53342519165141,"sku":"BGAC3M","price":2056.16,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-bgac3m","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}