FTS FLEXTUBE GAS/OIL
This unit offers capacities ranging from 863 to 17,255 PPH (25 – 500 BHP) with 85% efficiency. The smaller low maintenance design harnesses natural heat convection to ensure ongoing internal heat distribution and complete internal feedwater circulation. Carbon steel tubes connects the upper steaming chamber to the lower feedwater return vessel resulting in a 5-pass heat transfer area of 5 sq. ft. per BHP. To maximize natural circulation and heat transfer, separate down-comers attach the upper and lower vessels outside the boiler cabinet which result in a pressure vessel that gives off steam quickly while minimizing the risk of thermal shock.
The 1/2/3 series have water walls on three sides of the combustion chamber and require tube removal clearance on only one side of the boiler. The 4/5/6 series has water walls on sides of the chamber thereby requiring tube removal clearance on both sides of the boiler.
Models come with the ability to fit in limited spaces and then reassembled with no on-site code welding required.