{"product_id":"castair-15-hp-3phase-rotary-screw-air-compressor-58-cfm-at-100-psi-120-gal-vert-tank-460-r15312vg30","title":"Castair 15 HP 3Phase Rotary Screw Air Compressor 58 cfm at 100 psi 120 Gal Vert Tank 460 R15312VG30","description":"\u003ch2\u003eCast Air 15 HP 460V 3-Phase Rotary Screw Air Compressor — 58 CFM at 100 PSI, 120-Gallon Vertical Tank (R15312VG30-460)\u003c\/h2\u003e\n\n\u003cp\u003eThe Cast Air R15312VG30-460 delivers 58 CFM at 100 PSI from a 15 horsepower rotary screw pump, running on 460V 3-phase power. The 120-gallon tank is oriented vertically — same storage capacity as the horizontal version, in a smaller floor footprint. This is the right call when your shop demands the output of a full 15HP rotary screw system and your floor space doesn't accommodate the footprint of a horizontal tank.\u003c\/p\u003e\n\n\u003cp\u003eThe performance specs match the horizontal 460V variant (R15312HG30-460): 15HP, 58 CFM at 100 PSI, 460V 3-phase. What changes is the tank orientation and the resulting footprint. Everything else — the compressor pump, the motor, the output — is the same class of equipment.\u003c\/p\u003e\n\n\u003ch3\u003ePerformance: 58 CFM at 100 PSI\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpray gun capacity:\u003c\/strong\u003e An HVLP spray gun draws 12–18 CFM at the gun. At 58 CFM, two painters can work simultaneously with 20+ CFM remaining for other tools. A body shop painting one vehicle while prep work continues in an adjacent stall has adequate air supply without pressure drops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImpact wrenches:\u003c\/strong\u003e A 1\/2\" impact typically draws 4–5 CFM. A 3\/4\" or 1\" impact draws 7–12 CFM. At 58 CFM, multiple impacts can run simultaneously. For a heavy-duty service bay working large commercial vehicles with 1\" impacts, you have the CFM to handle it.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSustained throughput:\u003c\/strong\u003e Rotary screw compressors are continuous-duty machines. Unlike reciprocating piston compressors that require rest cycles to prevent overheating, this unit is designed to produce rated output all day without thermal protection shutdown during normal operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e120-gallon storage buffer:\u003c\/strong\u003e The tank absorbs peak demand spikes. When multiple tools draw simultaneously and the combined CFM briefly exceeds 58, the tank volume provides the surplus rather than allowing system pressure to drop. Larger tanks mean fewer pressure recovery cycles and more consistent tool performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eVertical Tank Configuration: Floor Space vs. Plumbing Access\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVertical saves floor space:\u003c\/strong\u003e A vertical 120-gallon tank stands upright. The footprint is smaller than an equivalent horizontal tank. In a shop where the compressor is tucked into a corner of the service bay, a mechanical room with limited square footage, or anywhere floor space is at a premium, vertical is the practical choice.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverhead air systems:\u003c\/strong\u003e If your shop runs an overhead air distribution ring or drops from ceiling mains, a vertical tank connects naturally. The supply outlet at the top of the tank connects directly to an overhead run without the angled plumbing a horizontal tank sometimes requires.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensate management:\u003c\/strong\u003e Condensate drains from the bottom of the vertical tank at the lowest collection point. An auto-drain valve at the tank base is the standard install. The geometry works cleanly for automatic draining.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhen horizontal is the better choice:\u003c\/strong\u003e If your compressor room has a low ceiling, or if your plumbing plan needs easy access to multiple taps along the tank length, the horizontal version (R15312HG30-460) is more practical. Horizontal tanks allow plumbing taps at convenient heights along the full tank length.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e460V 3-Phase: The Case for Industrial Voltage\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHalf the amperage for the same power:\u003c\/strong\u003e At 460V, a 15HP motor draws roughly half the amperage of the same horsepower at 230V. Lower current means smaller wire gauge for the supply run, smaller breaker, and reduced heat in your electrical panel. For a compressor installed any distance from the main panel, 460V is the more efficient choice.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire run economics:\u003c\/strong\u003e For a 100-foot run from panel to compressor at 15HP load, 460V allows you to use significantly lighter wire gauge than 230V. The wire savings alone can offset the cost difference between voltage configurations on longer runs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFacility compatibility:\u003c\/strong\u003e 460V 3-phase is standard in facilities that run heavy industrial equipment — frame straightening equipment, large CNC machines, industrial spray booths. If your facility already has 460V service, this unit integrates without adding a second voltage tier.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e230V version available:\u003c\/strong\u003e If your shop runs 230V 3-phase and adding 460V is not practical, the R15312VG30-230 is the same vertical tank configuration at 230V. Same 15HP output, higher amperage draw, same physical footprint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThis Unit vs. the Rest of the 15HP Lineup\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR15312VG30-460 (this unit):\u003c\/strong\u003e 15HP, 460V, vertical 120-gallon tank. For shops with limited floor space and 460V 3-phase service.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR15312HG30-460:\u003c\/strong\u003e 15HP, 460V, horizontal 120-gallon tank. Same CFM and pressure output. For shops where horizontal plumbing access matters more than floor footprint.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR15312VG30-230:\u003c\/strong\u003e 15HP, 230V, vertical 120-gallon tank. Same physical configuration, different voltage. Choose if your service is 230V 3-phase.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eR15312HG30-230:\u003c\/strong\u003e 15HP, 230V, horizontal 120-gallon tank. The 230V counterpart to the horizontal 460V version.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStepping down (10HP range):\u003c\/strong\u003e A 10HP rotary screw delivers approximately 35–42 CFM. If your shop's peak concurrent tool demand stays below 35 CFM, 10HP is adequate and saves on purchase price and operating cost. If you are regularly pushing a 10HP unit to its limit, 15HP is the correct step.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStepping up (20HP+):\u003c\/strong\u003e Full collision centers with dedicated paint booths, active prep stalls, frame equipment, and multiple open bays running simultaneously may need 20HP or above. If 58 CFM at 100 PSI is your ceiling and you are consistently hitting it, the next tier up is worth evaluating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e460V 3-phase required:\u003c\/strong\u003e Confirm your facility has 460V 3-phase service available before ordering. This is not a single-phase or residential unit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVentilation:\u003c\/strong\u003e The compressor room must have adequate fresh air intake and exhaust. Rotary screw compressors generate significant heat under sustained load. Inadequate ventilation causes thermal shutdown and reduces component service life. Refer to the installation manual for minimum ventilation requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir distribution:\u003c\/strong\u003e At 58 CFM output, supply mains should be sized appropriately — undersized pipe creates pressure loss between the compressor and the tools even when the unit is running correctly. A 3\/4\" to 1\" supply main is typical for this CFM level on runs under 100 feet.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMoisture management:\u003c\/strong\u003e A refrigerated air dryer downstream of the compressor is standard practice for spray painting and precision pneumatic work. Compressed air from any compressor carries moisture; removing it before it reaches the tools protects your equipment and your work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Specifications\u003c\/h3\u003e\n\u003cp\u003eFull technical specifications — exact full-load amperage at 460V, motor frame, discharge temperature, oil capacity, inlet and discharge port sizes, unit weight, and exact footprint dimensions — are available upon request. Contact us before ordering if you need the complete data sheet for installation planning, electrical permit applications, or equipment layout drawings.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy From OEM Diagnostic Tools?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialist since 2016:\u003c\/strong\u003e We focus on professional shop equipment. We can walk through vertical vs. horizontal configuration, voltage selection, and installation planning based on your specific facility layout and service availability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree shipping:\u003c\/strong\u003e Ships free to commercial addresses in the continental US.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree tech support:\u003c\/strong\u003e Call 866-217-0063 before you order to confirm the configuration. Call after delivery with installation questions. We support the equipment we sell.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull manufacturer warranty:\u003c\/strong\u003e Cast Air manufacturer warranty applies to this unit. We manage warranty claims on your behalf if an issue comes up.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHonest recommendations:\u003c\/strong\u003e If vertical doesn't suit your layout, we'll steer you to horizontal. If 15HP is more than you need, we'll say so. If your application really requires 20HP, we'll tell you that instead of taking the order on the wrong unit.\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\n\n\u003cdiv class=\"product-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat is the duty cycle on the R15312VG30-460, and how does it compare to a piston compressor?\u003c\/h3\u003e\n\u003cp\u003eThe R15312VG30-460 is a rotary screw compressor rated for 100% continuous duty — it can run all day without a mandated off cycle. A comparable piston unit typically runs 60–75% duty cycle and needs cool-down time between heavy loads. If your shop runs air tools, sanders, or spray equipment for extended shifts without breaks, a rotary screw like this is the right architecture.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow often does the R15312VG30-460 need an oil change?\u003c\/h3\u003e\n\u003cp\u003eCast Air rotary screw compressors use a synthetic compressor oil with a recommended change interval of 2,000–4,000 hours depending on operating environment — dusty or high-temperature environments call for the shorter interval. This is significantly longer than a piston compressor's 500–1,000 hour intervals. Keep an oil analysis log if you're running this unit hard; it's the best indicator of when the fluid is actually due.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat CFM output does the R15312VG30-460 deliver, and what tools will it support?\u003c\/h3\u003e\n\u003cp\u003eAt 100 PSI this unit delivers approximately 50–53 CFM, which is enough to simultaneously run multiple 3\/4\" impact wrenches, a plasma cutter, continuous sandblasting, or a full paint booth setup. The 120-gallon vertical tank provides buffer volume for high-demand bursts. If you're sizing for a specific tool list, call us at 866-217-0063 and we'll match CFM demand to this unit's output curve.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat electrical service does the R15312VG30-460 require?\u003c\/h3\u003e\n\u003cp\u003eThis compressor runs on 460V 3-phase power and draws approximately 22–24 amps full load at 15 HP — plan on a 30-amp 3-phase circuit with a properly sized disconnect and NEMA 3R or better enclosure if located near the panel. You'll need a licensed electrician to verify your transformer capacity and run appropriate wire gauge for the distance from your panel to the compressor. Do not attempt to run this on single-phase or a step-up converter; the motor is wound for true 3-phase.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow loud is the R15312VG30-460 in a shop environment?\u003c\/h3\u003e\n\u003cp\u003eRotary screw compressors in this class typically operate at 67–72 dB(A) — noticeably quieter than a comparable reciprocating piston unit, which usually runs 85–90 dB(A). The R15312VG30-460 uses Cast Air's all cast iron construction with an enclosed cabinet that dampens mechanical noise at the source. For shops with open floor plans or offices adjacent to the compressor room, this noise level difference is a meaningful operational consideration.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the duty cycle on the R15312VG30-460, and how does it compare to a piston compressor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The R15312VG30-460 is a rotary screw compressor rated for 100% continuous duty — it can run all day without a mandated off cycle. A comparable piston unit typically runs 60–75% duty cycle and needs cool-down time between heavy loads. If your shop runs air tools, sanders, or spray equipment for extended shifts without breaks, a rotary screw like this is the right architecture.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How often does the R15312VG30-460 need an oil change?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Cast Air rotary screw compressors use a synthetic compressor oil with a recommended change interval of 2,000–4,000 hours depending on operating environment — dusty or high-temperature environments call for the shorter interval. This is significantly longer than a piston compressor's 500–1,000 hour intervals. Keep an oil analysis log if you're running this unit hard; it's the best indicator of when the fluid is actually due.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What CFM output does the R15312VG30-460 deliver, and what tools will it support?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"At 100 PSI this unit delivers approximately 50–53 CFM, which is enough to simultaneously run multiple 3\/4\\\" impact wrenches, a plasma cutter, continuous sandblasting, or a full paint booth setup. The 120-gallon vertical tank provides buffer volume for high-demand bursts. If you're sizing for a specific tool list, call us at 866-217-0063 and we'll match CFM demand to this unit's output curve.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What electrical service does the R15312VG30-460 require?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This compressor runs on 460V 3-phase power and draws approximately 22–24 amps full load at 15 HP — plan on a 30-amp 3-phase circuit with a properly sized disconnect and NEMA 3R or better enclosure if located near the panel. You'll need a licensed electrician to verify your transformer capacity and run appropriate wire gauge for the distance from your panel to the compressor. Do not attempt to run this on single-phase or a step-up converter; the motor is wound for true 3-phase.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How loud is the R15312VG30-460 in a shop environment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Rotary screw compressors in this class typically operate at 67–72 dB(A) — noticeably quieter than a comparable reciprocating piston unit, which usually runs 85–90 dB(A). The R15312VG30-460 uses Cast Air's all cast iron construction with an enclosed cabinet that dampens mechanical noise at the source. For shops with open floor plans or offices adjacent to the compressor room, this noise level difference is a meaningful operational consideration.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342578311381,"sku":"R15312VG30-460","price":27789.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/Logo1_b0de6acb-9129-4229-9166-9347563518b8.webp?v=1772652826","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-15-hp-3phase-rotary-screw-air-compressor-58-cfm-at-100-psi-120-gal-vert-tank-460-r15312vg30","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}