{"product_id":"castair-d10124hc2-s","title":"Castair D10124HC2-S","description":"\u003cp\u003eThe Castair D10124HC2-S is a 20 total horsepower duplex two-stage air compressor on a 240-gallon horizontal ASME tank, running on single-phase electricity. It is the same 2x10HP HC2 pump package as the D10112HC2-S, but with double the tank capacity — 240 gallons instead of 120. The result is a unit that handles high peak demand applications where a smaller tank would cycle the pumps constantly or allow pressure to sag between cycles. At 1,820 lbs and with a magnetic starter mounted and wired from the factory, this is a production-grade machine for shops that run continuous or near-continuous air demand on a single-phase service.\u003c\/p\u003e\n\n\u003ch2\u003eWhy 240 Gallons Matters\u003c\/h2\u003e\n\u003cp\u003eTank size determines how long the compressor can supply demand before the pumps kick in, and how severe the pressure swings are during high-draw periods. With a 240-gallon receiver, a shop pulling 50-60 CFM for spray painting or sandblasting will see much steadier output pressure and less pump cycling compared to a 120-gallon system. Fewer cycles means less motor start stress, longer pump life, and a more consistent air supply to the tool.\u003c\/p\u003e\n\u003cp\u003eThe tradeoff is size and weight: the D10124HC2-S is 85\" x 30\" x 64\" and weighs 1,820 lbs — 350 lbs heavier than the D10112HC2-S and 4\" wider and 7\" taller. You need a floor that can support it and a doorway large enough to move it in.\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 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 240 gallons, horizontal ASME\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (LxWxH):\u003c\/strong\u003e 85\" x 30\" x 64\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,820 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 (758 RPM HC2) reduces heat and extends valve life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered roller bearings\u003c\/strong\u003e at both crankshaft ends\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\u003eConfiguration Comparison — 2x10HP Single-Phase\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10112HC2-S\u003c\/strong\u003e — 120gal, HC2 758 RPM, 85x28x57, 1,470 lbs — lighter, smaller footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10124HC2-S\u003c\/strong\u003e — 240gal, HC2 758 RPM, 85x30x64, 1,820 lbs — double storage (this unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10112HC3-S\u003c\/strong\u003e — 120gal, HC3 570 RPM, 94x28x57, 1,800 lbs — slower\/quieter pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD10124HC3-S\u003c\/strong\u003e — 240gal, HC3 570 RPM, 94x30x64, 2,150 lbs — max storage + slowest RPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen Does a Shop Need This\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe D10124HC2-S is the right choice when:\u003c\/strong\u003e Your shop runs spray painting, sandblasting, plasma cutting, or other high-draw continuous processes that would exhaust a 120-gallon tank too quickly; you are on single-phase power; and you need the duplex reliability of two independent pump\/motor sets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep down to D10112HC2-S\u003c\/strong\u003e if your air usage is more intermittent — tool impact wrenches, tire inflation, spot blowguns — and 120 gallons provides adequate buffer between pump cycles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep up to D10124HC3-S\u003c\/strong\u003e if you also want the slower-running, quieter HC3 pump in the 240-gallon package.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConsider three-phase\u003c\/strong\u003e (D10324HC2-S) if three-phase service is available — more efficient motor operation at this horsepower level.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications Summary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e D10124HC2-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 Single-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 240 gallon, horizontal, ASME, powder coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (LxWxH):\u003c\/strong\u003e 85\" x 30\" x 64\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,820 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 compressors since 2016. At this price point, the tank size and pump configuration decision matters — we can help you choose between 120 and 240 gallons based on your actual CFM demand and duty cycle. Free shipping, free technical support at 866-217-0063, full Castair 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":53342537220309,"sku":"D10124HC2","price":22130.7,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-d10124hc2-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}