{"product_id":"castair-120-gallon-horizontal-air-receiver-tank-200psi-120hd200","title":"Castair 120 Gallon Horizontal Air Receiver Tank 200PSI 120HD200","description":"\u003cp\u003eThe Castair 120HD200 is a 120-gallon horizontal ASME air receiver tank rated to 200 PSI, built with an extended 17\"x85\" top plate specifically for duplex compressor installations. The \"D\" designation stands for duplex — this tank is engineered to support two complete compressor pump and motor assemblies mounted directly on top of the tank, with enough top plate length (85 inches) to accommodate both units side by side with proper spacing. If you are building a duplex compressor system, this is the tank you need. Weight is 445 lbs empty — 90 lbs heavier than the standard 120H200, reflecting the larger top plate.\u003c\/p\u003e\n\n\u003ch2\u003eTank Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 120 gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e Horizontal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Dimensions:\u003c\/strong\u003e 24\" diameter x 68\" length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop Plate Size:\u003c\/strong\u003e 17\" x 85\" (extended duplex plate)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure:\u003c\/strong\u003e 200 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 445 lbs (empty)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Power coded, ASME certified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 120HD200\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat Makes This Tank Different: The Duplex Top Plate\u003c\/h2\u003e\n\u003cp\u003eThe standard 120H200 has a 17\"x44\" top plate — enough for one compressor unit. The 120HD200's 17\"x85\" top plate is 41 inches longer, providing the mounting surface for two separate pump\/motor assemblies. In a duplex installation, both compressors sit on this shared tank, alternating on and off to equalize run time and maintain system pressure. The extended plate keeps both units properly aligned, at the correct mounting height, and on a rigid surface that controls vibration.\u003c\/p\u003e\n\n\u003ch3\u003eDuplex Installation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRequires two complete motor\/pump assemblies (motors, pumps, pulleys, belts, belt guards)\u003c\/li\u003e\n\u003cli\u003eRequires duplex alternating controls — either an alternating pressure switch or a full magnetic starter alternating panel\u003c\/li\u003e\n\u003cli\u003eVibration pads (VP100, 4 per motor base) recommended at each motor mounting point\u003c\/li\u003e\n\u003cli\u003eRight From The Start duplex kits (RFS001D, RFS002D, RFS003D) cover oil, vib pads, ball valves, flex hoses, and filter elements for 10 HP, 15-20 HP, and 25-30 HP duplex builds respectively\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eASME Certification\u003c\/h2\u003e\n\u003cp\u003ePower coded and ASME certified — required for commercial and industrial installations. All Castair tanks carry the ASME stamp, meaning they meet the material, welding, and inspection standards for pressure vessels. This is not a nice-to-have; it is a code requirement in most jurisdictions for tanks above a certain capacity in workplace environments.\u003c\/p\u003e\n\n\u003ch2\u003e120H200 vs. 120HD200: Which Do You Need?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e120H200 ($1,755.83):\u003c\/strong\u003e Single-compressor horizontal tank, 17\"x44\" top plate. For standard simplex installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e120HD200 ($2,305.53):\u003c\/strong\u003e Duplex horizontal tank, 17\"x85\" top plate. For installations with two pump\/motor assemblies sharing one tank. The $550 price difference is the cost of the extended top plate and structural reinforcement to support two motors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e120V200 ($2,338.57):\u003c\/strong\u003e Vertical, single-compressor, 17\"x44\" top plate. Takes less floor space but more ceiling height than horizontal options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Castair 120-gallon horizontal ASME duplex air receiver tank, 200 PSI rated\u003c\/li\u003e\n\u003cli\u003eExtended 17\"x85\" top plate (integral)\u003c\/li\u003e\n\u003cli\u003eChannel base supports (integral)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Safety valve, pressure gauge, drain valve, motors, pumps, and alternating controls are sold separately.\u003c\/p\u003e\n\n\u003ch2\u003eWhen Does a Shop Need This\u003c\/h2\u003e\n\u003cp\u003eYou need the 120HD200 specifically when you are building a duplex compressor system and want both pumps sharing a single 120-gallon tank. Shops that cannot afford downtime — automotive dealerships, production facilities, paint booths running continuously — typically specify duplex for redundancy. The extended top plate is not optional for duplex; the 85-inch length is what allows both motor\/pump assemblies to mount properly. For a single-compressor system, buy the 120H200 instead.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h2\u003e\n\u003cp\u003eWe specialize in industrial air compressor systems and components. We can help you plan a complete duplex installation — tank, motors, pumps, controls, and accessories — and make sure everything is compatible before it ships. Free shipping (freight), free technical support at 866-217-0063, full manufacturer warranty on all Castair equipment.\u003c\/p\u003e\n\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":53342499864789,"sku":"120HD200","price":4251.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/Castair_Horizontal_Air_Receiver_38444361-43ed-49c2-bbbb-4b5c86373a02.png?v=1772652441","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-120-gallon-horizontal-air-receiver-tank-200psi-120hd200","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}