{"product_id":"castair-7-5-hp-3-phase-rotary-screw-air-compressor-31-cfm-100-psi-80gal-vert-tank-r738vp75","title":"Castair 7.5 HP 3 Phase Rotary Screw Air Compressor 31 CFM, 100 PSI, 80Gal Vert Tank, R738VP75","description":"\u003ch2\u003eCastair 7.5 HP 3-Phase Rotary Screw Air Compressor — Vertical Tank, 230V (R738VP75-230)\u003c\/h2\u003e\n\n\u003cp\u003eThe Castair R738VP75-230 is the vertical-tank version of the 7.5 HP 3-phase rotary screw lineup, wired for 230V. It delivers 31 CFM at 100 PSI on 100% duty cycle — same output as the horizontal R738HP75-230, but with a significantly smaller floor footprint at 34 x 26 x 70 inches. If your shop is space-constrained — especially in width — the vertical layout tucks into a corner more easily than the 64-inch-long horizontal version. Weight is identical at 546 lbs. Standard operating pressure is 135 PSI, with factory options for 150 or 175 PSI.\u003c\/p\u003e\n\n\u003ch2\u003eHorizontal vs. Vertical — Which Layout Fits Your Shop?\u003c\/h2\u003e\n\u003cp\u003eThe choice between R738VP75-230 (vertical) and R738HP75-230 (horizontal) comes down to ceiling height, aisle width, and where you plan to anchor the unit. The vertical tank is taller at 70 inches — confirm your ceiling height and check that a forklift or pallet jack can position it. The horizontal unit is longer but lower and easier to move through standard shop doors. Both deliver identical air output. Neither has a performance advantage — pick based on your floor plan.\u003c\/p\u003e\n\n\u003ch3\u003eAir End and Drive System\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuty cycle:\u003c\/strong\u003e 100% — continuous operation rated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir end:\u003c\/strong\u003e P75 rotary screw, single solenoid control — no computers, no lockout codes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor:\u003c\/strong\u003e Heavy-duty industrial 1725 RPM, 15% service factor or higher\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive:\u003c\/strong\u003e Off-shelf V-belts with adjustable belt tightener\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubrication:\u003c\/strong\u003e Factory-filled 4,000-hour \/ 1-year synthetic CAST-LUBE oil\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil filter:\u003c\/strong\u003e Spin-on automotive-type\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir filter:\u003c\/strong\u003e Paper element (P75 series)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eControls and Safety\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure and temperature gauges:\u003c\/strong\u003e Easy-read, standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh pressure shutdown:\u003c\/strong\u003e Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual high temperature shutdown:\u003c\/strong\u003e Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e10-minute shutdown timer:\u003c\/strong\u003e Standard — cuts electricity when demand drops\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo lockout codes:\u003c\/strong\u003e Service without dealer intervention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTank and Cooling\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank capacity:\u003c\/strong\u003e 80 gallons, vertical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank certification:\u003c\/strong\u003e ASME (USA-made)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir\/oil separator:\u003c\/strong\u003e Built-in with spin-on filter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAftercooler:\u003c\/strong\u003e Air-cooled aftercooler and oil cooler, removable for cleaning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlumbing:\u003c\/strong\u003e Off-shelf copper piping throughout\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 230V, 3-phase\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStarter:\u003c\/strong\u003e Name-brand magnetic starter, factory mounted and wired\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e460V option:\u003c\/strong\u003e Available as R738VP75-460\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHour meter:\u003c\/strong\u003e Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil and separator filters:\u003c\/strong\u003e Spin-on — no special tools\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBelt service:\u003c\/strong\u003e Off-shelf V-belts, adjustable tensioner\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePM kit:\u003c\/strong\u003e MKD3-4 (D3, D31, D4 air ends, 5-10 HP) — 10% savings on 2 air filters, 4 oil filters, 1 separator, 5 gal oil\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat Is in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCastair R738VP75-230 rotary screw compressor, fully assembled\u003c\/li\u003e\n  \u003cli\u003e80-gallon vertical ASME tank\u003c\/li\u003e\n  \u003cli\u003eAir-cooled aftercooler and oil cooler\u003c\/li\u003e\n  \u003cli\u003eMagnetic starter and controls, factory wired for 230V\u003c\/li\u003e\n  \u003cli\u003eHour meter\u003c\/li\u003e\n  \u003cli\u003ePressure and temperature gauges\u003c\/li\u003e\n  \u003cli\u003eFactory fill CAST-LUBE synthetic oil\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eVibration pads (VP1004), ball valve, and flex hose are recommended — available factory-mounted or separately.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR538VP75\u003c\/strong\u003e — 5 HP, 3-phase, 80 gal vertical, 20 CFM, 34x26x70, 470 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR738VP75-230 (this unit)\u003c\/strong\u003e — 7.5 HP, 3-phase, 230V, 80 gal vertical, 31 CFM, 34x26x70, 546 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR738VP75-460\u003c\/strong\u003e — Same, 460V 3-phase\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR738HP75-230\u003c\/strong\u003e — Same specs, horizontal layout, 64x32x44\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR1038VP75\u003c\/strong\u003e — 10 HP, 3-phase, 80 gal vertical, 40 CFM, 34x26x70, 585 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR15312VP75\u003c\/strong\u003e — 15 HP, 3-phase, 120 gal vertical, 52 CFM, 44x32x73, 765 lbs\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\u003eOrder this if:\u003c\/strong\u003e You have 3-phase 230V service, need continuous 31 CFM, and prefer the vertical layout to save floor length. Best for shops with at least 8-foot ceilings and where width is more constrained than height.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep up to R1038VP75 if:\u003c\/strong\u003e You are running more than 3 continuous air tools or need 40 CFM.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep down to R538VP75 if:\u003c\/strong\u003e Your shop runs one lift and one or two occasional air tools.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose horizontal if:\u003c\/strong\u003e You have low ceilings or the 70-inch height is a problem for your space.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e R738VP75-230\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 7.5 HP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 3-phase\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 230V (460V available as R738VP75-460)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCFM @ 100 PSI:\u003c\/strong\u003e 31\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard operating pressure:\u003c\/strong\u003e 135 PSI (150 or 175 PSI available)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuty cycle:\u003c\/strong\u003e 100%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank size:\u003c\/strong\u003e 80 gallons, vertical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank certification:\u003c\/strong\u003e ASME (USA-made)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (LxWxH):\u003c\/strong\u003e 34\" x 26\" x 70\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 546 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% or higher\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil:\u003c\/strong\u003e CAST-LUBE synthetic, 4,000-hour \/ 1-year service interval\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2 years on air end, electric motor, and tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCastair specialists:\u003c\/strong\u003e Full lineup, full parts support — filters, oil, PM kits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e to commercial addresses\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree tech support:\u003c\/strong\u003e 866-217-0063 — we can confirm sizing and layout questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull 2-year warranty\u003c\/strong\u003e on air end, motor, and tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHonest sizing guidance:\u003c\/strong\u003e If horizontal fits your shop better, we will tell you\u003c\/li\u003e\n\u003c\/ul\u003e\n\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":53342583980245,"sku":"R738VP75-230","price":17836.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/Screw.airend_jpg_0d092fc7-b74e-4ca2-8438-b3e18f344558.webp?v=1772652854","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-7-5-hp-3-phase-rotary-screw-air-compressor-31-cfm-100-psi-80gal-vert-tank-r738vp75","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}