Chris Please be careful as to what you regard to be a 'model'. For example boilers for steam plants in boats can be quite small and well within the bar-litre limits but cannot be tested because a boat is a boat, ie 12" to the foot scale. Likewise a boiler to drive a small industrial engine is not a model but is considered full size. Otherwise as Barrie states. Hope that helps Mike Leahy On 13 Apr 2012, at 10:17, Chris Crosskey wrote: > Does anyone know what the maximum bar-litre value is for a model > boiler? (i.e. for a boiler to be considered a model one). Does > anyone know if there's a vertical boiler design that operates close > to this.... Looking for something in the 80-100 psi range under the > assumption that this would be a sensible value for a double- > expansion engine... > > Many thanks > > chrisc > > ______________________________________________________________________ > __ > This e-mail, and any attachment, is confidential. If you have > received it in error, do not use or disclose the information in any > way, notify me immediately, and please delete it from your system. > ______________________________________________________________________ > __ > MODEL ENGINEERING DISCUSSION LIST. > > To UNSUBSCRIBE from this list, send a blank email to, > modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the > subject line. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.