{"product_id":"castair-belt-guard-aftercooler-bgac4","title":"Castair Belt Guard Aftercooler BGAC4","description":"\u003cp\u003eThe Castair BGAC4 is the top-tier unit in the BGAC belt guard aftercooler series — rated at 100 CFM and built for high-output reciprocating compressors that exceed the 75 CFM capacity of the BGAC3. If your system is running a large-frame two-stage compressor with significant continuous airflow output and the BGAC3 is undersized, the BGAC4 is the correctly specified unit. It is the largest aftercooler in the BGAC series and handles the full discharge output of the most demanding reciprocating compressor installations.\u003c\/p\u003e\n\n\u003cp\u003eThis is the loose unit configuration — sold standalone without compressor-specific mounting hardware. For the pre-configured compressor-mount version, that is the BGAC4M.\u003c\/p\u003e\n\n\u003ch3\u003eWhat the BGAC4 Does at 100 CFM\u003c\/h3\u003e\n\u003cp\u003eHigh-output reciprocating compressors discharge air at temperatures that can exceed 250°F at the pump head. At that temperature, water stays in vapor form and travels through the system unchecked — corroding the tank interior, saturating inline filters, and damaging downstream tools, valves, and spray equipment. The BGAC4 eliminates that problem at the source.\u003c\/p\u003e\n\u003cp\u003eMounted within the belt guard assembly, the BGAC4 intercepts hot discharge air before it reaches the tank. Ambient airflow from the compressor flywheel or a dedicated fan passes over the large finned core and drops the air temperature rapidly. Moisture condenses, collects at the aftercooler, and drains away. The result is discharge air cooled to within 15°F of ambient temperature with up to 65% of moisture removed — regardless of how hard the compressor is running.\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 at rated flow\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\u003e100 CFM capacity:\u003c\/strong\u003e Handles the discharge output of large-frame reciprocating compressors — the largest unit in the BGAC series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo cooling water connection:\u003c\/strong\u003e Air-to-air design — connections limited to the 1\" NPT air inlet and outlet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank and downstream protection:\u003c\/strong\u003e Keeping moisture out of the tank extends service life and prevents water damage to pneumatic equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesign and Construction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt guard integration:\u003c\/strong\u003e Mounts within the compressor belt guard assembly — no external mounting brackets or standalone installation required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\" NPT connections:\u003c\/strong\u003e Standard 1\" NPT inlet and outlet — matches the discharge plumbing of high-output reciprocating compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250 PSIG maximum operating pressure:\u003c\/strong\u003e Rated for the full output pressure range of large industrial reciprocating compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e350°F maximum operating temperature:\u003c\/strong\u003e Engineered for the actual discharge temperatures produced by large-frame pump heads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance tested at 250°F inlet:\u003c\/strong\u003e All ratings verified at real compressor discharge conditions — not ambient air temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoose unit configuration:\u003c\/strong\u003e Ships as a standalone unit — for field installation or replacement without requiring compressor-specific mounting hardware\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarger core than BGAC3:\u003c\/strong\u003e At 23\" x 26-1\/2\" and 25 lbs, the BGAC4 has a larger cooling surface than the BGAC3, enabling the higher 100 CFM throughput\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 BGAC4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM Rating:\u003c\/strong\u003e 100 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 23\" L x 26-1\/2\" W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 25 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 Loose unit (standalone)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition in Series:\u003c\/strong\u003e Top tier — largest unit in the BGAC lineup\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 — Full BGAC Series Lineup\u003c\/h3\u003e\n\u003cp\u003eCastair produces the BGAC series in four sizes. Each size is available as a loose unit and a compressor-mounted version (M suffix). Match the aftercooler CFM rating to your compressor's actual output, not just the nameplate HP.\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\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 the BGAC3 range (this unit)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your compressor is in the 20-25 HP range producing 75 CFM or less, the BGAC3 may be the more appropriately sized unit. The BGAC4 is the correct choice when the compressor output actually exceeds 75 CFM at operating conditions. Call 866-217-0063 with your compressor model and we can confirm which unit fits.\u003c\/p\u003e\n\n\u003ch3\u003eWhen Does a Shop Need the BGAC4 vs. Stepping Down to the BGAC3?\u003c\/h3\u003e\n\u003cp\u003eThe BGAC4 is the right choice in these situations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-output two-stage compressors:\u003c\/strong\u003e Large-frame industrial two-stage units producing more than 75 CFM at operating pressure — the BGAC3 is undersized for these applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous-duty high-demand systems:\u003c\/strong\u003e Shops or facilities where the compressor runs nearly continuously — a larger aftercooler handles the sustained thermal load better\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement for an existing BGAC4:\u003c\/strong\u003e Direct replacement for a failed or damaged BGAC4 in an existing installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuture-proofing large installs:\u003c\/strong\u003e If the compressor is close to the BGAC3 limit and the shop anticipates adding equipment or increasing air demand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not step up to the BGAC4 if your compressor is genuinely within the BGAC3 range — a correctly sized unit performs better than an oversized one. If you are unsure, call us with the compressor model, HP, and rated CFM output and we will confirm the right unit before you order.\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 carry the full Castair BGAC series and can confirm which size and configuration is correct for your specific compressor and installation. You talk to someone who knows compressors — not a general customer service representative reading from a screen.\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 — we help you confirm the right aftercooler size 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 sizing guidance\u003c\/strong\u003e — if the BGAC3 is the better fit for your compressor, we will tell you that instead of upselling you to the BGAC4\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":53342519296213,"sku":"BGAC4","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-belt-guard-aftercooler-bgac4","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}