{"product_id":"castair-d10112hc3-s","title":"Castair D10112HC3-S","description":"\u003cp\u003eThe Castair D10112HC3-S is a 20 total horsepower duplex two-stage air compressor on a 120-gallon horizontal ASME tank, running on single-phase electricity. It uses the HC3 pump configuration — running at 570 RPM, slower than the HC2 — which means quieter operation, lower running temperatures, and longer pump life in exchange for a larger physical footprint (94\" x 28\" x 57\" vs. 85\" for the HC2 frame). It delivers 70 CFM at 175 PSI combined from two 10 HP cast iron pumps, with a magnetic starter mounted and wired at the factory.\u003c\/p\u003e\n\n\u003ch2\u003eHC3 vs. HC2 — The Key Difference\u003c\/h2\u003e\n\u003cp\u003eThe HC2 and HC3 designations refer to the pump size and speed. Both deliver the same rated CFM (90 at 0 PSI, 70 at 175 PSI combined for the 2x10HP configuration), but the HC3 achieves that output at a lower RPM using a larger displacement pump:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHC2 pump:\u003c\/strong\u003e 758 RPM, 85\" frame length, 1,470 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHC3 pump:\u003c\/strong\u003e 570 RPM, 94\" frame length, 1,800 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSlower RPM means the pump runs cooler, valve wear is reduced, and the unit operates more quietly. If your shop has noise-sensitive areas or you plan to run this machine hard for long cycles, the HC3 is worth the extra weight and frame length.\u003c\/p\u003e\n\n\u003ch3\u003ePump and Motor Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Duplex (two pumps, two motors)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal HP:\u003c\/strong\u003e 20 HP (2 x 10 HP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e Single-phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump RPM:\u003c\/strong\u003e 570 (HC3 pump)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM at 0 PSI:\u003c\/strong\u003e 90 CFM combined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM at 175 PSI:\u003c\/strong\u003e 70 CFM combined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Pressure:\u003c\/strong\u003e 175 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage:\u003c\/strong\u003e Two-stage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTank and Physical Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Capacity:\u003c\/strong\u003e 120 gallons, horizontal ASME\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (LxWxH):\u003c\/strong\u003e 94\" x 28\" x 57\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,800 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Finish:\u003c\/strong\u003e Powder coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Valve:\u003c\/strong\u003e ASME rated, installed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnetic Starter:\u003c\/strong\u003e Mounted and wired (factory installed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCast Iron Pump Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll cast iron construction\u003c\/strong\u003e for long service life and quiet operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlow RPM design\u003c\/strong\u003e (570 RPM) — lower than HC2 for even quieter, cooler operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered roller bearings\u003c\/strong\u003e at both ends of crankshaft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision steel connecting rods\u003c\/strong\u003e with automotive-type rod insert bearings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc and spring valves\u003c\/strong\u003e for easy service and reliability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-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 loadless start-up\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFactory-Mounted Options Available\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Oil Control\u003c\/strong\u003e — #6304x2M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHour Meter 230V\u003c\/strong\u003e — #HRM75x2M | 460V — #HRM460x2M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternator\u003c\/strong\u003e — #ALT230M | #ALT460M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic Auto Drain\u003c\/strong\u003e — #SDV03M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Control (standard on C3)\u003c\/strong\u003e — included on this unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Noise Silencers (C2\/C3)\u003c\/strong\u003e — #SA100x4M (note: cannot combine with dual control on C3)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Tensioner (7.5-10HP)\u003c\/strong\u003e — #215Dx2M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRight From the Start Kit\u003c\/strong\u003e — #RFS001D (10HP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Pads\u003c\/strong\u003e — #VP1004\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeltguard Aftercooler\u003c\/strong\u003e — #BGAC1x2M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll Options C3 Package\u003c\/strong\u003e — #AOC3D\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDuplex Configuration Comparison — 2x10HP Single-Phase\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10112HC2-S\u003c\/strong\u003e — 758 RPM HC2 pump, 120gal, 85x28x57, 1,470 lbs — smaller footprint, lighter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10112HC3-S\u003c\/strong\u003e — 570 RPM HC3 pump, 120gal, 94x28x57, 1,800 lbs — slower\/quieter pump (this unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10124HC2-S\u003c\/strong\u003e — HC2 pump, 240-gallon tank, 1,820 lbs — more storage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10124HC3-S\u003c\/strong\u003e — HC3 pump, 240-gallon tank, 2,150 lbs — max storage + slowest RPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen Does a Shop Need This vs. Stepping Up or Down\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eChoose the D10112HC3-S over the D10112HC2-S when:\u003c\/strong\u003e Noise level matters (body shop, customer-facing areas), or the compressor will run extended duty cycles where keeping the pump cool is a priority. The 570 RPM HC3 pump is the better long-term choice for high-utilization shops even though it weighs 330 lbs more and costs more upfront.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep down to D10112HC2-S\u003c\/strong\u003e if floor space or ceiling height is tight (the HC3 frame is 9\" longer), or if budget is the primary constraint — same rated CFM output, just at a higher RPM.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep up to D10124HC3-S\u003c\/strong\u003e if your shop runs long continuous cycles that exhaust 120 gallons before the pumps catch up — adding 120 gallons of storage smooths out pressure swings during peak demand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConsider three-phase (D10312HC3-S or D10324HC3-S)\u003c\/strong\u003e if three-phase service is available. Three-phase motors at 10 HP run more efficiently and last longer than single-phase units of equivalent rating.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications Summary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e D10112HC3-S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Castair (Cast Air, Inc.) — Spicer, Minnesota\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Duplex, two-stage, electric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal HP:\u003c\/strong\u003e 20 HP (2 x 10 HP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e Single-phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump RPM:\u003c\/strong\u003e 570 (HC3)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 0 PSI:\u003c\/strong\u003e 90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 175 PSI:\u003c\/strong\u003e 70\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank:\u003c\/strong\u003e 120 gallon, horizontal, ASME, powder coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (LxWxH):\u003c\/strong\u003e 94\" x 28\" x 57\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,800 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnetic Starter:\u003c\/strong\u003e Included, factory mounted and wired\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Valve:\u003c\/strong\u003e ASME rated, installed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe have been selling industrial air compressors since 2016. The D10112HC3-S is a $12,000+ capital investment and the pump\/tank\/motor configuration decision matters. We can walk you through the HC2 vs. HC3 comparison, help you choose the right tank size, and advise on electrical service requirements. Free shipping, free technical support at 866-217-0063, and the full Castair manufacturer warranty on every unit we sell.\u003c\/p\u003e\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":53342536990933,"sku":"D10112HC3","price":25538.7,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-d10112hc3-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}