{"product_id":"heavy-duty-shop-tandem-model-no-t15324hc1-s","title":"Heavy Duty Shop Tandem - Model No.: T15324HC1-S","description":"\u003ch2\u003eCast Air Heavy Duty Shop Tandem Air Compressor — T15324HC1-S\u003c\/h2\u003e\n\u003cp\u003eThe T15324HC1-S puts two 15 HP motors on a 240-gallon horizontal ASME tank, running the HC1 cast iron pump at 898 RPM. Combined output is 110 CFM at 0 PSI and 90.6 CFM at 175 PSI. At $8,121, this is the 240-gallon version of the HC1 tandem — you get the same pumps as the T15312HC1-S but with double the receiver storage. The larger tank is the right choice when your demand comes in spikes rather than a steady draw: think a blast cabinet running in bursts, a tire shop doing a run of truck tires, or a body shop where several tools fire up at once before dropping back off. The 240-gallon receiver absorbs those spikes so the system pressure stays stable and the pumps do not short-cycle.\u003c\/p\u003e\n\n\u003ch3\u003e120 Gallons vs. 240 Gallons — When Does It Matter?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e120-gallon tank (T15312HC1-S):\u003c\/strong\u003e Right for shops with moderate, relatively consistent demand. The HC1 pump recovery rate is fast enough to keep the 120-gallon tank charged. Saves floor space and $1,446.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e240-gallon tank (T15324HC1-S — this unit):\u003c\/strong\u003e Right for shops with intense demand spikes. A fully charged 240-gallon receiver at 175 PSI holds roughly twice the stored air of the 120-gallon version — that buffer is the difference between stable pressure during a peak and dropping to 140 PSI while everyone is working.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical test:\u003c\/strong\u003e Watch your system pressure during your busiest hour. If it drops more than 20–25 PSI below your cut-in point, you need more storage, more CFM, or both. The T15324HC1-S addresses the storage problem while keeping the same pump and motor setup.\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 Cylinders, heads, crankcase — cast iron throughout for thermal stability and service longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e898 RPM (HC1 pump):\u003c\/strong\u003e Still dramatically slower than the 1,200–1,800 RPM found in import compressors. Quieter, cooler, longer service intervals than high-speed aluminum-bore equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered roller bearings:\u003c\/strong\u003e Both crankshaft ends. Handles radial and axial loads at sustained compressor duty better than ball bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision steel connecting rods:\u003c\/strong\u003e Automotive-type rod insert bearings at the crank, needle bearings at the wrist pin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc and spring valves:\u003c\/strong\u003e Field-serviceable. Easy to inspect and rebuild without pulling the entire pump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-ring pistons:\u003c\/strong\u003e Better ring seal, higher efficiency, less oil in the discharge stream.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal unloader:\u003c\/strong\u003e Loadless start every cycle. Protects 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, channel base for stable installation. Significantly more air storage than the 120-gallon version for the same pump output — the right choice when demand spikes are the problem.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo magnetic motor starters — mounted and wired:\u003c\/strong\u003e Factory-installed on both pump sides. Connect to 3-phase service and operate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASME safety valves:\u003c\/strong\u003e Factory-set on both sides.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal belt guards:\u003c\/strong\u003e Fully enclosed on both pump assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper discharge and unloader tubes:\u003c\/strong\u003e Copper tubing throughout the hot side — more durable than rubber hose at sustained compressor temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,725 RPM industrial motors:\u003c\/strong\u003e 15% service factor or higher.\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 Auto-shutdown protection on both pumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHour Meter 230V (#HRM75x2M) or 460V (#HRM460x2M):\u003c\/strong\u003e Independent runtime tracking on each pump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternator Relay (#ALT230M or #ALT460M):\u003c\/strong\u003e Automatically alternates lead pump each cycle to equalize wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic Auto Drain (#SDV03M):\u003c\/strong\u003e Timed solenoid condensate drain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Control (#DC1x2M):\u003c\/strong\u003e Start\/stop and throttle modes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Noise Silencers (#SA100x4M):\u003c\/strong\u003e Quiets intake on both pumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Tensioner (#254Dx2M):\u003c\/strong\u003e Self-tensioning motor base for consistent belt tension.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftercooler (#BGAC1x2M, 70 CFM rated):\u003c\/strong\u003e Belt-guard-mounted aftercooler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll Options Package (#AOC1D):\u003c\/strong\u003e All asterisk options at 10% discount.\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 HC1 pump and motor assemblies on a single rigid 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 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 — 15 HP Shop Tandem Lineup\u003c\/h3\u003e\n\u003cul\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 (this unit)\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\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 120-gallon (T15312HC1-S):\u003c\/strong\u003e If your demand is steady rather than spikey, and floor space is tight, the 120-gallon unit at $6,675 is $1,446 less and does the same job. The pump output is identical.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis unit is right when:\u003c\/strong\u003e Your shop has burst demand — multiple tools firing simultaneously, then dropping off — and you want the pressure stability that 240 gallons of storage delivers. Same pumps as the 120-gallon version, more buffer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep up to HC2 (T15324HC2-S):\u003c\/strong\u003e If you need more CFM in addition to more storage, the HC2 pump on the 240-gallon tank gives you 123.4 CFM combined for $9,173. Worth it if the shop is consistently running at or near the HC1's 90.6 CFM capacity at 175 PSI.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications — T15324HC1-S\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e T15324HC1-S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 2 × 15 HP (30 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 898 (HC1 configuration)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 0 PSI:\u003c\/strong\u003e 110 (combined, both pumps)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 175 PSI:\u003c\/strong\u003e 90.6 (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 $8,120.65\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Exact LxWxH dimensions and shipping weight for this configuration are not individually published by Castair. 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. We carry Cast Air because their American-built cast iron machines are the right answer for shops that cannot afford downtime. When you buy through us:\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 — we will help you decide between the 120 and 240-gallon options based on your actual demand pattern\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Cast Air manufacturer warranty\u003c\/strong\u003e handled directly through us\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonest upgrade guidance:\u003c\/strong\u003e If the HC1 is the right pump for your load, we will tell you — even if the HC2 costs more.\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":53342604689621,"sku":"T15324HC1-S","price":8120.65,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/heavy-duty-shop-tandem-model-no-t15324hc1-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}