Automann 172.2013 Air Tank – 9.5 in Dia, 1425 cu in, 27.5 in Bracket Span

Quality replacement air brake reservoir for trailer air systems. The Automann 172.2013 is a 9.5 in diameter steel tank with a 22.5 in shell and a minimum volume of 1,425 cubic inches, spanning 27.5 in overall across its welded mounting brackets. 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.Signs You Need a New Air Tank Rust-through or pinholes, usually on the bottom of the tank where condensate collects Weeping or bubbling at a welded seam or head weld when soap tested A large slug of water at every drain, or water that keeps returning between services Drain valve that will not seal or will not open, from corrosion or a seized petcock Compressor cycling more often or slow pressure build with no other leak found Cracked or corroded mounting brackets, or a tank shifting in its saddle Dents or impact damage — a dented reservoir is a compromised pressure vessel Audible hiss at a port boss that persists after the fitting is refitted Specifications Manufacturer Automann Part Number 172.2013 Part Type Air Brake Reservoir (Air Tank), Trailer Outside Diameter 9.500 in Tank Length 22.500 in Overall Length Across Brackets 27.500 in Minimum Volume 1,425 cu in (6.17 US gallons) Main Port 3/4 in NPT End Ports (2) 3/8 in NPT Drain Port 1/4 in NPT, bottom Maximum Working Pressure 150 PSI Standards FMVSS 121, SAE J10 Material Steel Product Level Automann Fleet Standard Cross ReferencesThis part replaces or is equivalent to the following part numbers: Hoosier Tank: HT9510 Tramec Sloan: TSJ9510 ApplicationsThis reservoir is a universal trailer air tank, selected by specification rather than by vehicle: Trailer air brake systems requiring approximately 1,425 cubic inches of reservoir volume Installations using a 9.5 in diameter tank on a 27.5 in bracket span Supply, service and emergency reservoir positions sized to the OEM air system design Note the two length figures carefully: the TANK shell is 22.5 in, while 27.5 in is the overall span across the mounting brackets. Some sellers list 27.5 in as the tank length, which is incorrect. 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. 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.