{"product_id":"castair-d10312hc2-s","title":"Castair D10312HC2-S","description":"\u003cp\u003eThe Castair D10312HC2-S is a 20 total horsepower duplex two-stage air compressor on a 120-gallon horizontal ASME tank, wired for three-phase electricity. It runs two 10 HP cast iron pumps at 758 RPM (HC2 configuration), delivers 70 CFM at 175 PSI combined, and weighs 1,410 lbs. The magnetic starter is mounted and wired at the factory. This is the three-phase equivalent of the D10112HC2-S — same pump, same tank, same output — but the three-phase power system means better motor efficiency, lower running current, and longer motor life at this horsepower level.\u003c\/p\u003e\n\n\u003ch2\u003eThree-Phase Advantage at 2x10HP\u003c\/h2\u003e\n\u003cp\u003eIf your shop has three-phase service, this is the preferred configuration over single-phase at this power level. Three-phase motors:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDraw lower amperage for the same horsepower output — easier on your electrical service\u003c\/li\u003e\n\u003cli\u003eStart more smoothly — less in-rush current stress on breakers and motor windings\u003c\/li\u003e\n\u003cli\u003eRun cooler due to balanced load across all three legs\u003c\/li\u003e\n\u003cli\u003eLast longer — three-phase motors are simpler in construction (no start capacitors, no centrifugal switches)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe D10312HC2-S also weighs 60 lbs less than its single-phase counterpart (1,410 lbs vs. 1,470 lbs), though the dimensions are identical at 85\" x 28\" x 57\".\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 Three-phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump RPM:\u003c\/strong\u003e 758 (HC2 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 85\" x 28\" x 57\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,410 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\u003e758 RPM HC2 pump\u003c\/strong\u003e — slow speed for extended valve life and quieter 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 efficiency and reduced oil carry-over\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal unloader\u003c\/strong\u003e for loadless starts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eThree-Phase 2x10HP Duplex Comparison\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10312HC2-S\u003c\/strong\u003e — 3-phase, 120gal, HC2 758 RPM, 85x28x57, 1,410 lbs (this unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10324HC2-S\u003c\/strong\u003e — 3-phase, 240gal, HC2 758 RPM, 85x30x64, 1,760 lbs — more storage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10312HC3-S\u003c\/strong\u003e — 3-phase, 120gal, HC3 570 RPM, 94x28x57, 1,740 lbs — slower\/quieter pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10324HC3-S\u003c\/strong\u003e — 3-phase, 240gal, HC3 570 RPM, 94x30x64, 2,190 lbs — maximum configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen Does a Shop Need This\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eChoose the D10312HC2-S when:\u003c\/strong\u003e You have three-phase service, need 60-70 CFM sustained output, want duplex redundancy, and the 120-gallon tank provides adequate storage for your duty cycle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep up to D10324HC2-S\u003c\/strong\u003e if your shop runs continuous high-draw processes — spray painting, sandblasting — that exhaust 120 gallons between pump cycles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep up to D10312HC3-S\u003c\/strong\u003e if noise level matters or you plan to run the machine at a very high duty cycle; the 570 RPM HC3 pump runs cooler and quieter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIf you do not have three-phase service,\u003c\/strong\u003e the D10112HC2-S is the single-phase equivalent with the same output specs.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e D10312HC2-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\u003eTotal HP:\u003c\/strong\u003e 20 HP (2 x 10 HP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e Three-phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump RPM:\u003c\/strong\u003e 758 (HC2)\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 85\" x 28\" x 57\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,410 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 Cast Air duplex compressors since 2016. Before you order, we will confirm your electrical service can support two 10 HP three-phase motors simultaneously and help you spec any factory-mounted options (low oil control, auto drain, aftercooler). Free shipping, free technical support at 866-217-0063, full manufacturer warranty.\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":53342537613525,"sku":"D10312HC2","price":17507.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/D10312HC2.jpg?v=1772675073","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-d10312hc2-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}