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.