Types of Boilers

In this type of boiler there is an upper cylinder or more than one filled with water. A series of small tubes running at an angle from the front or fire door end of the upper cylinder to a point below in the back of the crates where they meet in another cylinder or pipe. The portions of the tubes directly over the fire will be hottest and the water here will become heated and rise to the front end of the Upper Boiler. This type of boiler gives great heating surface and since the tubes are small they will have ample strength with much thinner walls. You can get up steam in thistype of boiler quicker than in any other.