{"product_id":"power-products-ht1200-air-tank-12-in-dia-2850-cu-in-smile-bracket","title":"Power Products HT1200 Air Tank – 12 in Dia, 2850 cu in, Smile Bracket","description":"\u003cp\u003eQuality replacement air brake reservoir for trailer air systems. The Power Products HT1200 is a 12 in diameter steel tank with a 27 in shell and a volume of 2,850 cubic inches, spanning 29.5 in overall across its welded smile-style brackets below the tank. It carries a 3\/4 in NPT main port, two 3\/8 in NPT end ports and a 1\/4 in NPT bottom drain, and is rated to 150 PSI to FMVSS 121 and SAE J10.\u003c\/p\u003e\u003ch2\u003eSigns You Need a New Air Tank\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRust-through or pinholes, usually on the bottom of the tank where condensate collects\u003c\/li\u003e\n\u003cli\u003eWeeping or bubbling at a welded seam or head weld when soap tested\u003c\/li\u003e\n\u003cli\u003eA large slug of water at every drain, or water that keeps returning between services\u003c\/li\u003e\n\u003cli\u003eDrain valve that will not seal or will not open, from corrosion or a seized petcock\u003c\/li\u003e\n\u003cli\u003eCompressor cycling more often or slow pressure build with no other leak found\u003c\/li\u003e\n\u003cli\u003eCracked or corroded mounting brackets, or a tank shifting in its saddle\u003c\/li\u003e\n\u003cli\u003eDents or impact damage — a dented reservoir is a compromised pressure vessel\u003c\/li\u003e\n\u003cli\u003eAudible hiss at a port boss that persists after the fitting is refitted\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003ePower Products\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eHT1200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Type\u003c\/th\u003e\n\u003ctd\u003eAir Brake Reservoir (Air Tank), Trailer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOutside Diameter\u003c\/th\u003e\n\u003ctd\u003e12.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTank Length\u003c\/th\u003e\n\u003ctd\u003e27.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOverall Length Across Brackets\u003c\/th\u003e\n\u003ctd\u003e29.500 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eVolume\u003c\/th\u003e\n\u003ctd\u003e2,850 cu in (12.34 US gallons)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMain Port\u003c\/th\u003e\n\u003ctd\u003e3\/4 in NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEnd Ports\u003c\/th\u003e\n\u003ctd\u003e(2) 3\/8 in NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDrain Port\u003c\/th\u003e\n\u003ctd\u003e1\/4 in NPT, bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBracket Style\u003c\/th\u003e\n\u003ctd\u003eSmile (below tank), welded end brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum Working Pressure\u003c\/th\u003e\n\u003ctd\u003e150 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eStandards\u003c\/th\u003e\n\u003ctd\u003eFMVSS 121, SAE J10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFinish\u003c\/th\u003e\n\u003ctd\u003ePowder-coated steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eCross References\u003c\/h2\u003e\u003cp\u003eThis part replaces or is equivalent to the following part numbers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomann:\u003c\/strong\u003e 172.2002\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHoosier Tank:\u003c\/strong\u003e HT-1200\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVelvac:\u003c\/strong\u003e 035108\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThis reservoir is a universal trailer air tank, selected by specification rather than by vehicle:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTrailer air brake systems requiring 2,850 cubic inches of reservoir volume\u003c\/li\u003e\n\u003cli\u003eInstallations using a 12 in diameter tank on a 29.5 in bracket span\u003c\/li\u003e\n\u003cli\u003eSupply, service and emergency reservoir positions sized to the OEM air system design\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eNote the two length figures carefully: the TANK shell is 27 in, while 29.5 in is the overall span across the mounting brackets. Match cubic inch capacity first, since the OEM calculated it from the total air system design and fitting a smaller reservoir is a compliance failure rather than a cost saving. Then confirm the bracket span against your frame rail mounting points and check bracket orientation. This tank has SMILE brackets, meaning the arc opens upward and the tank sits on top of them — the same tank with brackets above is a different part. To identify yours, view the tank from the side with the bottom drain port facing down. A drain valve is not included. An air brake reservoir is a DOT-regulated pressure vessel under FMVSS 121 — welding a repair on a corroded tank is not an acceptable fix.\u003c\/em\u003e\u003c\/p\u003e","brand":"Power Products","offers":[{"title":"Default Title","offer_id":52784886153501,"sku":"HT1200","price":122.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/0730\/1991\/files\/HT1200_P04_SID.jpg?v=1787663184","url":"https:\/\/www.allprodiesel.net\/products\/power-products-ht1200-air-tank-12-in-dia-2850-cu-in-smile-bracket","provider":"All Pro Truck Parts","version":"1.0","type":"link"}