{"product_id":"heavy-duty-shop-tandem-model-no-t30324hc3-s","title":"Heavy Duty Shop Tandem - Model No.: T30324HC3-S","description":"\u003ch2\u003eCastair Heavy Duty Shop Tandem Air Compressor — Model T30324HC3-S\u003c\/h2\u003e\n\n\u003cp\u003eThe Castair T30324HC3-S is a 30 HP, three-phase, two-stage tandem air compressor designed for large shops and industrial applications that demand serious air volume. This tandem configuration uses two cast iron pumps driven by a single motor mounted on a 240-gallon horizontal ASME tank. At 30 horsepower, this is a workhorse built for continuous-duty environments where downtime is not an option.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHorsepower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhase\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThree Phase (3-Phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTandem — 2 pumps, 1 motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwo-Stage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePump RPM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e795\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e240 gallon, horizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (LxWxH)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e94 x 30 x 68 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2,210 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eBuilt with Cast Iron — Not Aluminum:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCastair pumps are made of cast iron, not aluminum. They are oil-lubricated, not oil-less, and they run at slow RPMs (795 RPM on this model). That means less heat, less wear, and a significantly longer service life compared to the high-speed aluminum compressors flooding the market. The name says it all — CASTAIR — cast iron air.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCast Iron Pump Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll cast iron construction for long life and quiet operation\u003c\/li\u003e\n\u003cli\u003eSlow RPM from 420 to 995 for quiet operation and extended service life\u003c\/li\u003e\n\u003cli\u003eTapered roller bearings at both ends of the crankshaft for superior support and less friction\u003c\/li\u003e\n\u003cli\u003ePrecision steel connecting rods with automotive-type rod insert bearings at the crankshaft and bearings at the wrist pin\u003c\/li\u003e\n\u003cli\u003eStainless steel disc and spring valves for easy service, higher efficiency, and reliability\u003c\/li\u003e\n\u003cli\u003e4-ring pistons for higher efficiency and less oil carry-over\u003c\/li\u003e\n\u003cli\u003eCentrifugal unloader for load-less start-up every time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eTank, Motor, and Controls:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePowder-coated ASME-certified 240-gallon horizontal tank\u003c\/li\u003e\n\u003cli\u003eASME safety valves\u003c\/li\u003e\n\u003cli\u003eTotally enclosed metal belt guard\u003c\/li\u003e\n\u003cli\u003eCopper discharge and unloader tube\u003c\/li\u003e\n\u003cli\u003eHeavy-duty 1,725 RPM industrial motor with full 15% service factor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eIncluded with Every Tandem Series Compressor:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll Tandem Series (piston-driven) compressors come with the Right from the Start Kit included.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShipping and Order Confirmation:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis unit will ship within two weeks of order placement. All orders receive a courtesy call to confirm conditions and application to ensure the correct product has been purchased.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eCastair. Compressors Built Like They Used to Be.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eFamily owned and operated since 1991.\u003c\/p\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 a tandem compressor and how does it differ from a duplex unit?\u003c\/h3\u003e\n\u003cp\u003eA tandem compressor like the T30324HC3-S uses two pump heads driven by a single motor on one crankshaft, whereas a duplex has two completely independent pumps and motors on the same tank. On the T30324HC3-S, the 30 HP motor drives both cast iron pump heads simultaneously for continuous-duty output — you get the airflow of two pumps without the added complexity of two motors, two starters, or alternating controls. For shops that need sustained high-CFM output without the lead\/lag cycling of a duplex, tandem is the right call.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat are the electrical requirements for the T30324HC3-S?\u003c\/h3\u003e\n\u003cp\u003eThe T30324HC3-S requires 3-phase power to run the 30 HP motor — this is not a single-phase unit. You will need a properly sized disconnect, breaker, and wire gauge rated for a 30 HP 3-phase load at your incoming voltage (typically 208-230\/460V; confirm your specific voltage configuration before ordering). A licensed electrician should verify your service capacity and run a dedicated circuit, as undersized wiring is the most common cause of startup and thermal-overload issues on compressors in this class.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow much floor space does the T30324HC3-S require, and what clearance is needed around it?\u003c\/h3\u003e\n\u003cp\u003eThe 240-gallon horizontal tank makes this a large footprint unit — plan for roughly 8 to 9 feet of length and ensure a minimum of 24 inches of clearance on all service sides for belt, valve, and filter access. The compressor should be installed on a level concrete floor capable of supporting the unit's filled weight, and keep it away from heat sources and areas where airborne debris or moisture can be pulled into the intake. Cast Air builds these in Spicer, MN for industrial environments, but proper placement directly impacts pump longevity and cooling efficiency.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhen does a tandem setup like the T30324HC3-S make more sense than a standard single-pump unit?\u003c\/h3\u003e\n\u003cp\u003eThe T30324HC3-S is the right choice when you need high sustained CFM output — production shops, tire service bays, sandblasting, or multi-tool operations where a single-pump unit would run at or near 100% duty cycle. The tandem configuration delivers more displacement per HP than a single-pump design of equivalent horsepower, and the all cast iron construction from Cast Air means it holds up under the heat and wear that come with continuous use. If your current compressor is struggling to keep up with peak demand or cycling constantly, this model is sized for that workload. Call us at 866-217-0063 and we can walk through your CFM requirements to confirm the T30324HC3-S fits your application.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat does routine maintenance on the T30324HC3-S involve?\u003c\/h3\u003e\n\u003cp\u003eCast Air's cast iron pumps are designed for straightforward maintenance: regular oil changes on the pump crankcase (intervals per Cast Air spec, typically every 500 hours or annually under normal use), belt tension checks, air filter inspection, and manual drain or auto-drain servicing on the 240-gallon tank to prevent water accumulation. Because it's a tandem with a single motor, you have one set of belts and one motor to maintain rather than the two of a duplex, which reduces scheduled service time. Cast Air has been building these in Spicer, MN since 1991 with parts availability in mind — valve kits, rings, and gaskets are stocked and serviceable in the field.\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 a tandem compressor and how does it differ from a duplex unit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A tandem compressor like the T30324HC3-S uses two pump heads driven by a single motor on one crankshaft, whereas a duplex has two completely independent pumps and motors on the same tank. On the T30324HC3-S, the 30 HP motor drives both cast iron pump heads simultaneously for continuous-duty output — you get the airflow of two pumps without the added complexity of two motors, two starters, or alternating controls. For shops that need sustained high-CFM output without the lead\/lag cycling of a duplex, tandem is the right call.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the electrical requirements for the T30324HC3-S?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The T30324HC3-S requires 3-phase power to run the 30 HP motor — this is not a single-phase unit. You will need a properly sized disconnect, breaker, and wire gauge rated for a 30 HP 3-phase load at your incoming voltage (typically 208-230\/460V; confirm your specific voltage configuration before ordering). A licensed electrician should verify your service capacity and run a dedicated circuit, as undersized wiring is the most common cause of startup and thermal-overload issues on compressors in this class.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How much floor space does the T30324HC3-S require, and what clearance is needed around it?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 240-gallon horizontal tank makes this a large footprint unit — plan for roughly 8 to 9 feet of length and ensure a minimum of 24 inches of clearance on all service sides for belt, valve, and filter access. The compressor should be installed on a level concrete floor capable of supporting the unit's filled weight, and keep it away from heat sources and areas where airborne debris or moisture can be pulled into the intake. Cast Air builds these in Spicer, MN for industrial environments, but proper placement directly impacts pump longevity and cooling efficiency.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"When does a tandem setup like the T30324HC3-S make more sense than a standard single-pump unit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The T30324HC3-S is the right choice when you need high sustained CFM output — production shops, tire service bays, sandblasting, or multi-tool operations where a single-pump unit would run at or near 100% duty cycle. The tandem configuration delivers more displacement per HP than a single-pump design of equivalent horsepower, and the all cast iron construction from Cast Air means it holds up under the heat and wear that come with continuous use. If your current compressor is struggling to keep up with peak demand or cycling constantly, this model is sized for that workload. Call us at 866-217-0063 and we can walk through your CFM requirements to confirm the T30324HC3-S fits your application.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does routine maintenance on the T30324HC3-S involve?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Cast Air's cast iron pumps are designed for straightforward maintenance: regular oil changes on the pump crankcase (intervals per Cast Air spec, typically every 500 hours or annually under normal use), belt tension checks, air filter inspection, and manual drain or auto-drain servicing on the 240-gallon tank to prevent water accumulation. Because it's a tandem with a single motor, you have one set of belts and one motor to maintain rather than the two of a duplex, which reduces scheduled service time. Cast Air has been building these in Spicer, MN since 1991 with parts availability in mind — valve kits, rings, and gaskets are stocked and serviceable in the field.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342607638741,"sku":"T30324HC3-S","price":13233.4,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/heavy-duty-shop-tandem-model-no-t30324hc3-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}