{"product_id":"castair-i10312vc3-s","title":"Castair I10312VC3-S","description":"\u003cp\u003eThe Castair I10312VC3 is the 10-horsepower, 3-phase industrial compressor with a 120-gallon vertical tank and the slow-speed C3 pump configuration — the same core machine as the I10312VC3-S without the factory-mounted magnetic motor starter. If your shop already has a properly rated motor starter on your electrical panel, or if your electrician is sourcing and installing the starter separately as part of a larger service installation, this is the right version to order. The C3 pump runs at 570 RPM — substantially slower than standard pumps — and that slow speed is what makes these machines last.\u003c\/p\u003e\u003ch2\u003eWho Needs This Configuration\u003c\/h2\u003e\u003cp\u003eThe I10312VC3 fits shops on 3-phase power that are handling their own electrical installation or already have starter infrastructure in place. Industrial facilities with existing MCC (motor control center) panels, shops with in-house electricians, and installations where the starter is being mounted remotely from the compressor all make sense for the non-starter version. You get the same C3 pump, the same 120-gallon ASME vertical tank, and the same 35.0 CFM at 175 PSI — just without the factory-wired starter box on the unit itself.\u003c\/p\u003e\u003ch2\u003eThe C3 Pump — Why It Matters for Long-Term Reliability\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll cast iron construction\u003c\/strong\u003e — cylinders, heads, crankcase. Cast iron handles heat and wear better than aluminum alternatives for continuous-duty service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e570 RPM pump speed\u003c\/strong\u003e — running at roughly half the speed of a standard 900+ RPM pump means proportionally less wear per hour of operation. These pumps can run for many years with proper maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered roller bearings at both ends of the crankshaft\u003c\/strong\u003e — proper support for the thrust and radial loads generated by a reciprocating pump. Tapered roller bearings outlast ball bearings in this application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel connecting rods with automotive-type insert bearings\u003c\/strong\u003e — at crankshaft and wrist pin. Insert bearings are serviceable and replaceable without replacing the entire pump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc and spring valves\u003c\/strong\u003e — reliable under high-cycle commercial use and straightforward to service when replacement is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-ring pistons\u003c\/strong\u003e — better sealing and significantly less oil carry-over versus 2-ring designs on budget pumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal unloader\u003c\/strong\u003e — loadless motor starts every time. The motor never has to start against compressed air, which dramatically extends motor life.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTank and Motor\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e120-gallon vertical ASME tank\u003c\/strong\u003e — powder coated with four legs. The vertical orientation gives you 120 gallons of air storage in a 44x30 inch floor footprint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASME safety valve\u003c\/strong\u003e — properly rated and code-compliant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1725 RPM industrial motor\u003c\/strong\u003e with 15% service factor minimum — designed for sustained heavy-duty operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal belt guard, totally enclosed\u003c\/strong\u003e — debris protection and safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper discharge tube or stainless-steel braided flex line\u003c\/strong\u003e — rated for continuous high-temperature service.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Lineup — 10HP 3-Phase Industrial Series\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eI1038VC2-S\u003c\/strong\u003e — 80-gallon vertical, C2 pump (758 RPM), 35.0 CFM @175 PSI, with starter, 40x24x74 in., 770 lbs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI1038HC2-S\u003c\/strong\u003e — 80-gallon horizontal, C2 pump (758 RPM), 35.0 CFM @175 PSI, with starter, 64x20x46 in., 770 lbs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI10312VC2-S\u003c\/strong\u003e — 120-gallon vertical, C2 pump (758 RPM), 35.0 CFM @175 PSI, with starter, 44x30x75 in., 860 lbs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI10312HC2-S\u003c\/strong\u003e — 120-gallon horizontal, C2 pump (758 RPM), 35.0 CFM @175 PSI, with starter, 69x24x50 in., 860 lbs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI10312VC3 (this unit)\u003c\/strong\u003e — 120-gallon vertical, C3 pump (570 RPM), 35.0 CFM @175 PSI, no starter, 44x30x75 in., 1025 lbs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI10312VC3-S\u003c\/strong\u003e — Same as this unit with factory-mounted magnetic starter included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI10312HC3-S\u003c\/strong\u003e — 120-gallon horizontal, C3 pump (570 RPM), with starter, 69x24x50 in., 1025 lbs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e I10312VC3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 10 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 3-phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Capacity:\u003c\/strong\u003e 120 gallons, vertical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump RPM:\u003c\/strong\u003e 570\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 0 PSI:\u003c\/strong\u003e 45.0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 175 PSI:\u003c\/strong\u003e 35.0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Pressure:\u003c\/strong\u003e 175 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (LxWxH):\u003c\/strong\u003e 44 x 30 x 75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,025 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Speed:\u003c\/strong\u003e 1725 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Service Factor:\u003c\/strong\u003e 15% minimum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Certification:\u003c\/strong\u003e ASME\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnetic Starter:\u003c\/strong\u003e Not included (order separately or source locally)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump Configuration:\u003c\/strong\u003e C3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\u003cp\u003eWe have specialized in industrial air compressors since 2016. Call us before you order and we will confirm whether the with-starter or without-starter version is the right call for your installation — it is a common question and the answer depends on your electrical setup. Free shipping, free pre-sale technical support, and full manufacturer warranty on every unit.\u003c\/p\u003e\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":53342558126293,"sku":"I10312VC3","price":13720.04,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-i10312vc3-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}