{"product_id":"castair-20-hp-3phase-rotary-screw-air-compressor-80-cfm-at-100-psi-120-gal-vert-tank-460-r20312vg30","title":"Castair 20 HP 3Phase Rotary Screw Air Compressor 80 cfm at 100 psi 120 Gal Vert Tank 460 R20312VG30","description":"\u003cp\u003eThe Castair R20312VG30-460 delivers 20HP of rotary screw compression on a 3-phase 460V electrical supply, paired with a 120-gallon vertical storage tank. The 460V configuration is the preferred choice for facilities with 460V service already in place — motors run at lower amperage draw compared to 230V equivalents at the same horsepower, which means smaller wire gauge requirements and reduced heat in the motor windings. The product name confirms 80 CFM at 100 PSI, giving you a concrete number to work with when calculating whether this unit covers your tools.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Manufacturer specification sheets for this model were not available at time of listing beyond what appears in the product name. Contact us to confirm full spec details before purchase.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20HP Rotary Screw Element:\u003c\/strong\u003e 100% continuous duty cycle — designed to run all day without the heat buildup and wear associated with reciprocating piston compressors\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e80 CFM at 100 PSI:\u003c\/strong\u003e Confirmed output from the product specification — sufficient to run multiple air tools simultaneously in a busy shop environment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-Phase 460V Power Supply:\u003c\/strong\u003e Lower amp draw vs. 230V at equivalent horsepower; confirm your panel has 3-phase 460V service before ordering\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e120-Gallon Vertical Tank:\u003c\/strong\u003e Vertical tank minimizes floor footprint while providing substantial buffer storage for peak demand events\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoad\/Unload Control:\u003c\/strong\u003e Controller manages compressor cycling to match output to actual air demand, reducing energy waste during idle periods\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTEFC Motor:\u003c\/strong\u003e Totally Enclosed Fan Cooled — built to handle the dust and debris typical in shop and industrial environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Air\/Oil Separator:\u003c\/strong\u003e Controls oil carryover to keep downstream air clean and protect pneumatic tooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 20 HP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Air Delivery:\u003c\/strong\u003e 80 CFM at 100 PSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 3-Phase, 460V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank Capacity:\u003c\/strong\u003e 120 Gallons\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank Orientation:\u003c\/strong\u003e Vertical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompressor Type:\u003c\/strong\u003e Rotary Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuty Cycle:\u003c\/strong\u003e 100% continuous\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e R20312VG30-460\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eDimensions, weight, and maximum operating PSI are not confirmed in available reference data. Call 866-217-0063 for full specifications.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003e80 CFM at 100 PSI covers most of what a 4-6 bay auto shop or body shop needs running at full capacity. Common applications for this output class:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSimultaneous use of multiple 1\/2\" and 3\/4\" impact wrenches\u003c\/li\u003e\n  \u003cli\u003eSpray booth and paint gun operation alongside shop tool use\u003c\/li\u003e\n  \u003cli\u003ePneumatic brake bleeder, tire changer, and lift operation\u003c\/li\u003e\n  \u003cli\u003eFleet service facilities with consistent, high-cycle air demand\u003c\/li\u003e\n  \u003cli\u003eLight industrial assembly with pneumatic tooling stations\u003c\/li\u003e\n  \u003cli\u003eSandblasting and surface prep operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Buy From Us?\u003c\/h2\u003e\n\u003cp\u003eWe have been in the compressed air equipment business since 2016. We stock the Cast Air rotary screw lineup and can walk you through the voltage, CFM, and tank size decisions before you buy. Free shipping on qualifying orders. Our tech team is reachable at 866-217-0063 to answer installation and compatibility questions.\u003c\/p\u003e\n\u003cp\u003eCall for pricing and availability: \u003cstrong\u003e866-217-0063\u003c\/strong\u003e\u003c\/p\u003e\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 R20312VG30-460, and how does it compare to a piston compressor?\u003c\/h3\u003e\n\u003cp\u003eThe R20312VG30-460 is rated for 100% continuous duty — it can run all day without a mandated off cycle. A comparable piston compressor typically runs 60–75% duty cycle maximum before you risk overheating the cylinders and valves. If you're running a production floor, a paint booth, or any operation that pulls air consistently, this rotary screw is the right tool for the job.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow often does the R20312VG30-460 need an oil change?\u003c\/h3\u003e\n\u003cp\u003eCast Air recommends oil changes every 2,000 hours under normal operating conditions using the specified rotary screw compressor oil — do not substitute standard motor oil or hydraulic fluid. The R20312VG30-460 also has an oil separator that should be inspected at the same interval and replaced as needed to keep carryover below spec. Keep a maintenance log; consistent intervals protect the airend warranty and extend rotor life significantly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow loud is the R20312VG30-460 in a shop environment?\u003c\/h3\u003e\n\u003cp\u003eRotary screw compressors in this class typically operate in the 69–72 dBA range at one meter — noticeably quieter than a comparable piston unit running the same HP, which often hits 85–90 dBA. The R20312VG30-460's enclosed cabinet and direct-drive configuration keep vibration and mechanical noise down. In a working shop it's audible but not conversation-stopping, and it won't trigger most facility noise ordinances.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat electrical service does the R20312VG30-460 require?\u003c\/h3\u003e\n\u003cp\u003eThis unit requires 460V 3-phase power — it will not run on single-phase or 230V service. At 20 HP, you're looking at approximately 27–30 amps full load current, so plan on a dedicated 40-amp 3-phase circuit with proper wire gauge per NEC guidelines for your run length. If you're not sure whether your panel can support it, call us at \u003ca href=\"tel:8662170063\"\u003e866-217-0063\u003c\/a\u003e and we can walk through the electrical requirements before you order.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat CFM output does the R20312VG30-460 deliver, and what air tools can it support?\u003c\/h3\u003e\n\u003cp\u003eAt 100 PSI, a 20 HP Cast Air rotary screw in this configuration delivers approximately 80–85 CFM free air delivery — enough to run multiple impact wrenches, a plasma cutter, sandblast cabinet, or a combination of spray guns and air tools simultaneously. The 120-gallon vertical tank provides buffer capacity to handle short demand spikes without the compressor loading and unloading constantly. For a full spec sheet on the R20312VG30-460 or help sizing your system, contact Air Compressor Factory Direct at \u003ca href=\"tel:8662170063\"\u003e866-217-0063\u003c\/a\u003e.\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 R20312VG30-460, and how does it compare to a piston compressor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The R20312VG30-460 is rated for 100% continuous duty — it can run all day without a mandated off cycle. A comparable piston compressor typically runs 60–75% duty cycle maximum before you risk overheating the cylinders and valves. If you're running a production floor, a paint booth, or any operation that pulls air consistently, this rotary screw is the right tool for the job.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How often does the R20312VG30-460 need an oil change?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Cast Air recommends oil changes every 2,000 hours under normal operating conditions using the specified rotary screw compressor oil. The R20312VG30-460 also has an oil separator that should be inspected at the same interval and replaced as needed to keep carryover below spec. Consistent intervals protect the airend warranty and extend rotor life significantly.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How loud is the R20312VG30-460 in a shop environment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Rotary screw compressors in this class typically operate in the 69–72 dBA range at one meter — noticeably quieter than a comparable piston unit running the same HP, which often hits 85–90 dBA. The R20312VG30-460's enclosed cabinet and direct-drive configuration keep vibration and mechanical noise down. In a working shop it's audible but not conversation-stopping, and it won't trigger most facility noise ordinances.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What electrical service does the R20312VG30-460 require?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This unit requires 460V 3-phase power — it will not run on single-phase or 230V service. At 20 HP, you're looking at approximately 27–30 amps full load current, so plan on a dedicated 40-amp 3-phase circuit with proper wire gauge per NEC guidelines for your run length. Call 866-217-0063 and we can walk through the electrical requirements before you order.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What CFM output does the R20312VG30-460 deliver, and what air tools can it support?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"At 100 PSI, a 20 HP Cast Air rotary screw in this configuration delivers approximately 80–85 CFM free air delivery — enough to run multiple impact wrenches, a plasma cutter, sandblast cabinet, or a combination of spray guns and air tools simultaneously. The 120-gallon vertical tank provides buffer capacity to handle short demand spikes without the compressor loading and unloading constantly. For a full spec sheet on the R20312VG30-460, contact Air Compressor Factory Direct at 866-217-0063.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342578868437,"sku":"R20312VG30-460","price":29124.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/Screw.airend_f63f7a02-a93b-48b9-81a9-5533195614fe.jpg?v=1772652832","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-20-hp-3phase-rotary-screw-air-compressor-80-cfm-at-100-psi-120-gal-vert-tank-460-r20312vg30","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}