{"product_id":"castair-15-hp-industrial-two-stage-cast-iron-air-compressor-45-3-50-2-cfm-175-psi-120-gal-asme-tank","title":"Castair 15 HP Industrial Two-Stage Cast Iron Air Compressor – 45.3–50.2 CFM @ 175 PSI, 120 Gal ASME Tank","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; line-height: 1.7; color: #222; max-width: 900px; margin: 0 auto;\"\u003e\n\u003ch2 style=\"font-size: 24px; font-weight: bold; color: #000;\"\u003eCastair 15 HP Industrial Two-Stage Cast Iron Air Compressor — 50.2 CFM @ 175 PSI, 120 Gal ASME Tank\u003c\/h2\u003e\n\u003cp\u003eThe Castair 15 HP Industrial Air Compressor is a heavy-duty, two-stage cast iron piston compressor engineered for the demands of a working shop. It delivers 61.7 CFM at 0 PSI and 50.2 CFM at 175 PSI, driven by an oversized cast iron pump that runs at a deliberately slow RPM for quiet operation and long service life. The whole unit comes self-contained on a powder-coated ASME-certified tank with heavy-duty industrial controls. Built to order by Castair, a family-owned Minnesota manufacturer since 1991.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy It's Different:\u003c\/strong\u003e Castair builds these pumps to last: all cast iron construction, tapered roller bearings at both ends of the crankshaft, precision steel connecting rods with automotive-type insert bearings, disc-and-spring valves for easy service and higher efficiency, and four-ring pistons that cut oil carry-over. A centrifugal unloader gives a load-less start-up every time. The slow-RPM design is the key difference from cheaper high-speed compressors — it runs cooler and quieter and lasts dramatically longer under daily shop use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Production shops and facilities running multiple air stations on a continuous basis.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Choose three-phase power and vertical or horizontal tank orientation. All units run at 795 RPM and deliver 61.7 CFM @ 0 PSI \/ 50.2 CFM @ 175 PSI on a 120-gallon ASME tank.\u003c\/p\u003e\n\u003cp style=\"border: 1px solid #d00; padding: 10px; background: #fff8f8;\"\u003e\u003cstrong\u003e⚠️ BEFORE YOU ORDER — PLEASE READ:\u003c\/strong\u003e This is a heavy-duty, built-to-order industrial compressor. \u003cbr\u003e• \u003cstrong\u003eElectrical:\u003c\/strong\u003e three-phase only — requires a dedicated 208–230V (or 460V) three-phase circuit, installed by a licensed electrician with proper grounding. \u003cbr\u003e• \u003cstrong\u003eLead time:\u003c\/strong\u003e all Castair units are built to order — confirm current production lead time before purchase. \u003cbr\u003e• \u003cstrong\u003eWeight \u0026amp; placement:\u003c\/strong\u003e approx. 1,185 lb; requires a level floor rated for the load, adequate ventilation for heat dissipation, and freight handling for delivery. \u003cbr\u003eIt is the customer's responsibility to verify electrical service, floor space, and ventilation before purchase and installation.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-stage oversized cast iron pump\u003c\/strong\u003e built for long life and quiet operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50.2 CFM @ 175 PSI\u003c\/strong\u003e rated output (61.7 CFM @ 0 PSI | 50.2 CFM @ 175 PSI)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlow-RPM design\u003c\/strong\u003e (420–995 RPM range across the series) for cooler, quieter, longer-lasting operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered roller bearings\u003c\/strong\u003e at both ends of the crankshaft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision steel connecting rods\u003c\/strong\u003e with automotive-type insert bearings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc \u0026amp; spring valves\u003c\/strong\u003e for easy service, higher efficiency \u0026amp; reliability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-ring pistons\u003c\/strong\u003e for higher efficiency and less oil carry-over\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal unloader\u003c\/strong\u003e for a load-less start-up every time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowder-coated ASME-certified tank\u003c\/strong\u003e with ASME safety valves\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTotally enclosed metal belt guard\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper discharge \u0026amp; unloader tube\u003c\/strong\u003e or stainless-steel braided flex line\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty 1,725 RPM industrial motor\u003c\/strong\u003e with full 15% service factor or higher\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: #000; color: #fff; text-align: left; padding: 10px; font-size: 15px;\" colspan=\"8\"\u003eCastair Industrial 15 HP — 61.7 CFM @ 0 PSI | 50.2 CFM @ 175 PSI\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003ePhase\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eTank (Gal)\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eOrientation\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003ePump RPM\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eCFM @ 175 PSI\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eL × W × H (in)\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eWt (lb)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eI15312VC3-S\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eThree\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e120\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eVertical\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e795\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e50.2\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e44×30×82\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1,185\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eI15312HC3-S\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eThree\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e120\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eHorizontal\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e795\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e50.2\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e69×24×62\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1,185\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 14px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: #000; color: #fff; text-align: left; padding: 10px; font-size: 15px;\" colspan=\"2\"\u003eShared Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eCastair (Spicer, Minnesota — family-owned since 1991)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eTwo-stage cast iron piston air compressor (industrial), ASME tank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eTotal HP\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e15 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eOutput\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e61.7 CFM @ 0 PSI | 50.2 CFM @ 175 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003ePump\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eTwo-stage, oversized cast iron, slow-RPM, 4-ring pistons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eMotor\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eHeavy-duty 1,725 RPM industrial, 15% service factor or higher\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eVoltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e208–230V \/ 460V, three-phase only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eTank\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e120 gal, powder-coated ASME-certified, vertical or horizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eASME-certified air receiver tank \u0026amp; ASME safety valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eCastair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-stage cast iron compressor self-contained on a powder-coated ASME tank\u003c\/li\u003e\n\u003cli\u003eHeavy-duty 1,725 RPM industrial motor\u003c\/li\u003e\n\u003cli\u003eTotally enclosed metal belt guard\u003c\/li\u003e\n\u003cli\u003eCopper discharge \u0026amp; unloader tube (or stainless braided flex line)\u003c\/li\u003e\n\u003cli\u003eASME safety valves, centrifugal unloader\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e(Factory-mounted options available — low oil control, hour meter, auto tank drain, dual control, intake silencers, belt tensioner, vibration pads, beltguard aftercooler, Right-From-the-Start kit. Order all asterisk options together for 10% off. Contact us to configure.)\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eManuals \u0026amp; Documentation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"#\"\u003eCastair Industrial Series Installation \u0026amp; Operation Manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#\"\u003eCastair Industrial 15 HP Spec Sheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"CastAir","offers":[{"title":"I15312VC3-S-795 RPM-Vertical","offer_id":45136784097395,"sku":"I15312VC3-S","price":8416.36,"currency_code":"USD","in_stock":true},{"title":"I15312HC3-S-795 RPM-Horizontal","offer_id":45136784130163,"sku":"I15312HC3-S","price":7868.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/3650\/5203\/files\/test-2_1.webp?v=1782422917","url":"https:\/\/bluecollarplanet.com\/products\/castair-15-hp-industrial-two-stage-cast-iron-air-compressor-45-3-50-2-cfm-175-psi-120-gal-asme-tank","provider":"Blue Collar Planet","version":"1.0","type":"link"}