{"product_id":"heavy-duty-shop-tandem-model-no-t10324hc2-s","title":"Heavy Duty Shop Tandem - Model No.: T10324HC2-S","description":"\u003ch2\u003eCast Air Heavy Duty Shop Tandem Air Compressor — T10324HC2-S\u003c\/h2\u003e\n\u003cp\u003eThe T10324HC2-S is a two-stage, twin-pump horizontal tandem from Cast Air built for shops that need serious air capacity without stepping up to a full rotary screw system. Two 10 HP motors drive two independent cast iron pumps, giving you 70 CFM at 0 PSI and 35 CFM at 175 PSI on a 240-gallon horizontal ASME tank — all on 3-phase power. At $8,150, this is a purpose-built machine for body shops, fleet maintenance bays, tire shops, and production environments where a single-pump industrial compressor runs out of steam before the day ends.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Two Pumps?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedundancy built in:\u003c\/strong\u003e If one pump requires service, the other keeps the shop running. With a single-pump machine, a failed valve or worn rings means downtime. With this tandem, you call for service without shutting down.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad sharing:\u003c\/strong\u003e Two 10 HP pumps running at moderate load run cooler and last longer than one 20 HP pump hammering at maximum capacity all day.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEqual motor wear:\u003c\/strong\u003e Add an alternator relay (option ALT230M or ALT460M) and the two motors automatically swap lead duty each cycle, equalizing runtime hours between both sides.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCast Iron Pump Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll cast iron construction:\u003c\/strong\u003e Pump cylinders, heads, and crankcase are cast iron for thermal stability and long service life — not aluminum that expands and contracts with temperature swings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e758 RPM pump speed (HC2 configuration):\u003c\/strong\u003e Slow RPM is the whole point. Cast Air sizes its pumps to run at well under 1,000 RPM, which means dramatically quieter operation compared to the 1,200–1,800 RPM pumps found in cheaper compressors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered roller bearings:\u003c\/strong\u003e Both ends of the crankshaft ride on tapered roller bearings, not ball bearings. Superior load capacity and longer service intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision steel connecting rods:\u003c\/strong\u003e Automotive-type rod insert bearings at the crankshaft, needle bearings at the wrist pin. This is the same engineering found in diesel engines, not consumer equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc and spring valves:\u003c\/strong\u003e Easy to service in the field. Valves are the highest-wear item on any piston compressor — Cast Air uses a disc\/spring design that outlasts reed valves and is straightforward to rebuild.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-ring pistons:\u003c\/strong\u003e Better ring seal means higher efficiency and less oil carried over into the discharge air.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal unloader:\u003c\/strong\u003e Every start is loadless. The centrifugal unloader bleeds head pressure before the motor spins up, protecting both motors and pressure switches from repeated hard starts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTank and Controls\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e240-gallon horizontal ASME tank:\u003c\/strong\u003e Powder-coated for corrosion resistance. Channel base for level installation on a shop floor. The 240-gallon receiver keeps system pressure stable during peak demand — fewer pump cycles, less heat buildup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnetic motor starters — mounted and wired:\u003c\/strong\u003e Both motor starters are factory-installed and wired. Connect to your 3-phase service and go.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASME safety valves:\u003c\/strong\u003e Factory-set relief valves protect both pumps and the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal belt guard:\u003c\/strong\u003e Fully enclosed. Keeps hands, rags, and debris away from belts and pulleys.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper discharge and unloader tubes:\u003c\/strong\u003e Cast Air uses copper tubing for discharge lines, not rubber hose. Copper handles heat better and does not degrade with oil exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty 1,725 RPM industrial motors:\u003c\/strong\u003e Full 15% service factor or higher. Rated for the actual duty cycle of an industrial shop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Factory-Mounted Options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Oil Control (#6304x2M):\u003c\/strong\u003e Shuts down the affected pump automatically if oil drops to a dangerous level. Essential for any unattended operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHour Meter — 230V (#HRM75x2M) or 460V (#HRM460x2M):\u003c\/strong\u003e Track actual runtime hours on each pump independently for scheduled maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternator Relay (#ALT230M or #ALT460M):\u003c\/strong\u003e Automatically alternates which pump leads each cycle, equalizing wear between both units over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic Auto Drain (#SDV03M):\u003c\/strong\u003e Timed solenoid drains condensate from the tank automatically. Critical for air quality and tank longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Control (#DC2x2M):\u003c\/strong\u003e Adds start\/stop and constant pressure (throttling) control modes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Noise Silencers (#SA100x4M):\u003c\/strong\u003e Reduces intake noise on both pumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Tensioner (#215Dx2M):\u003c\/strong\u003e Self-tensioning motor base system keeps belt tension consistent as belts break in and wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftercooler (#BGAC1x2M, 70 CFM rated):\u003c\/strong\u003e Belt-guard-mounted aftercooler cools compressed air before the receiver, reducing condensate in the lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll Options Package (#AOC2D):\u003c\/strong\u003e Order all asterisk options together and receive 10% off the combined option price.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Is in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTwo cast iron two-stage pump and motor assemblies, mounted on a single frame\u003c\/li\u003e\n\u003cli\u003e240-gallon horizontal powder-coated ASME tank with channel base\u003c\/li\u003e\n\u003cli\u003eTwo magnetic motor starters, mounted and wired at the factory\u003c\/li\u003e\n\u003cli\u003eTwo ASME safety valves\u003c\/li\u003e\n\u003cli\u003eTwo metal belt guards (fully enclosed)\u003c\/li\u003e\n\u003cli\u003eCopper discharge and unloader tubes on both pump sides\u003c\/li\u003e\n\u003cli\u003ePressure switch for each pump\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eOptional accessories are factory-installed at time of order and are not included unless specified at purchase.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eAvailable Configurations — Heavy Duty Shop Tandem Lineup\u003c\/h3\u003e\n\u003cp\u003eCast Air builds the Shop Tandem series across a range of horsepower and tank sizes. All units are two-stage, 3-phase. CFM figures are combined output of both pumps:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eT10324HC2-S:\u003c\/strong\u003e 2×10 HP, 758 RPM, 70 CFM \/ 35 CFM @ 175 PSI, 240-gal — $8,150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT15312HC1-S:\u003c\/strong\u003e 2×15 HP, 898 RPM, 110 CFM \/ 90.6 CFM @ 175 PSI, 120-gal — $6,675\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT15312HC2-S:\u003c\/strong\u003e 2×15 HP, 795 RPM, 123.4 CFM \/ 100.4 CFM @ 175 PSI, 120-gal — $7,639\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT15324HC1-S:\u003c\/strong\u003e 2×15 HP, 898 RPM, 110 CFM \/ 90.6 CFM @ 175 PSI, 240-gal — $8,121\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT15324HC2-S:\u003c\/strong\u003e 2×15 HP, 795 RPM, 123.4 CFM \/ 100.4 CFM @ 175 PSI, 240-gal — $9,173\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT20312HC2-S:\u003c\/strong\u003e 2×20 HP, 758 RPM, 180 CFM \/ 140 CFM @ 175 PSI, 120-gal — $7,974\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT20312HC3-S:\u003c\/strong\u003e 2×20 HP, 570 RPM, 180 CFM \/ 140 CFM @ 175 PSI, 120-gal — $10,285\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT20324HC2-S:\u003c\/strong\u003e 2×20 HP, 758 RPM, 180 CFM \/ 140 CFM @ 175 PSI, 240-gal — $9,460\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT20324HC3-S:\u003c\/strong\u003e 2×20 HP, 570 RPM, 180 CFM \/ 140 CFM @ 175 PSI, 240-gal — $11,610\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT25312HC2-S:\u003c\/strong\u003e 2×25 HP, 710 RPM, 218 CFM \/ 180 CFM @ 175 PSI, 120-gal — $8,292\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT25312HC3-S:\u003c\/strong\u003e 2×25 HP, 710 RPM, 218 CFM \/ 180 CFM @ 175 PSI, 120-gal — $10,924\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT25324HC2-S:\u003c\/strong\u003e 2×25 HP, 710 RPM, 218 CFM \/ 180 CFM @ 175 PSI, 240-gal — $9,826\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT25324HC3-S:\u003c\/strong\u003e 2×25 HP, 710 RPM, 218 CFM \/ 180 CFM @ 175 PSI, 240-gal — $12,458\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT30312HC3-S:\u003c\/strong\u003e 2×30 HP, 794 RPM, 256 CFM \/ 210 CFM @ 175 PSI, 120-gal — $11,730\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT30324HC3-S:\u003c\/strong\u003e 2×30 HP, 794 RPM, 256 CFM \/ 210 CFM @ 175 PSI, 240-gal — $13,233\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen Does a Shop Need This vs. Stepping Up or Down?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep down to a single industrial unit:\u003c\/strong\u003e If your shop runs one spray gun, two air tools at a time, and shuts down at 5 PM, a single 10 HP industrial unit (I10312HC2-S) is the right call. The tandem adds cost and complexity you do not need.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis unit is right when:\u003c\/strong\u003e You run a body shop with two painters working simultaneously, a fleet shop with four technicians sharing air, or any operation where a single 10 HP machine would short-cycle or run at near 100% duty cycle. The 240-gallon receiver absorbs demand spikes, and the second pump means you never lose production to a single pump failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep up to rotary screw:\u003c\/strong\u003e If you need truly continuous air — paint booths running nonstop, CNC equipment, or over 100 CFM sustained — look at Cast Air's rotary screw or rotary-piston hybrid line. The Shop Tandem piston series is for heavy intermittent demand, not 100% continuous duty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications — T10324HC2-S\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e T10324HC2-S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 2 × 10 HP (20 HP total)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 3-phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump RPM:\u003c\/strong\u003e 758 (HC2 configuration)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 0 PSI:\u003c\/strong\u003e 70 (combined, both pumps)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 175 PSI:\u003c\/strong\u003e 35 (combined, both pumps)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Capacity:\u003c\/strong\u003e 240 gallons, horizontal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Type:\u003c\/strong\u003e ASME-certified, powder-coated, channel base\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Speed:\u003c\/strong\u003e 1,725 RPM, 15% service factor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump Type:\u003c\/strong\u003e Two-stage, all cast iron, centrifugal unloader\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Two magnetic motor starters, mounted and wired\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge Tubing:\u003c\/strong\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Guard:\u003c\/strong\u003e Metal, fully enclosed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $8,150.40\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Exact LxWxH dimensions and shipping weight for this specific tandem configuration are not published by Castair on their website. Contact us for freight details before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe have specialized in industrial air compressor sales since 2016, and Cast Air is a core part of our lineup because their American-built, cast iron machines hold up in ways that import equipment does not. When you buy a Shop Tandem through us, you get:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e to a commercial address with a loading dock or forklift\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree tech support at 866-217-0063\u003c\/strong\u003e — call before you buy to confirm the right horsepower and tank size for your shop's actual CFM demand. We will help you size it correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Cast Air manufacturer warranty\u003c\/strong\u003e — we handle warranty claims directly with Cast Air on your behalf\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonest upgrade guidance:\u003c\/strong\u003e If the T10324HC2-S is overkill or not enough for your application, we will tell you. We would rather sell you the right machine than the wrong one twice.\u003c\/li\u003e\n\u003c\/ul\u003e\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":53342603739349,"sku":"T10324HC2-S","price":8150.4,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/heavy-duty-shop-tandem-model-no-t10324hc2-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}