Three-Pass Wet-Back Fire-Tube Boilers
Our flagship line: horizontal fire-tube steam boilers with a three-pass wet-back gas path, built to order from 250 to 3,000 kg/hr.
Three-Pass Wet-BackBuilt to Order250–3,000 kg/hr
A three-pass wet-back boiler routes the hot combustion gases through the vessel three times before they exit the flue, and surrounds the furnace itself with water (a "wet back") rather than an external refractory chamber. Routing the gas through three passes extracts more heat from the same volume of fuel before it leaves the stack, and the water-backed furnace runs cooler at the rear wall than a dry-back design, which is why this is our flagship configuration for continuous industrial duty.
