The York-Shipley Dryback boiler has been a staple of boiler rooms all over the world since the early 1900s. With over 10,000 of these boilers in service, it’s hard to dispute their durability. The York-Shipley dryback boiler is built on the concept of center-firing, where the furnace is placed in direct center of the pressure vessel. This furnace location provides an increased level of water circulation, which leads to a more balanced thermal distribution in the vessel. Why does this matter? Less thermal shock, Less cracked tube sheets, and less furnace failures due to scaling. Sounds good, doesn’t it?