The pressure vessel is of all steel construction.
Tubes are cold drawn , seamless steel tubes , expanded into drill e d and reamed holes.
Stay tubes , where required , are welded in. All boilers comply with insurance regulations and are supplied with a boiler certif i cate and all relevant material certif i cates The Kingdon Range Built , using m odem techniques , along the lines of the famous Simson Strickland Kingdon boilers , these units are ideal for a host of applications. Vertical Fire Tube Built to complement our popular range of Kingdon boilers , these units are ideal for applications which require a larger grate area , for example where wood burning is intended or in non-condensing applications.