GTS 6700 Series

The GTS Series of hot water boilers is a unique three pass, horizontal fire tube, water-backed steam boiler design developed and perfected in Switzerland and now is a standard in the EU community.  Available in both high pressure and low pressure steam, this particular shell design overcomes thermal shock problems common to other multi-pass boilers. Thermal stress is greatly reduced because of two unique features of the furnace. Firstly, the larger diameter, shorter furnace produces less thermal expansion than a furnace of an ordinary boiler. Secondly, the furnace end is supported by stays which are attached to the rear tube sheet. Tube sheet fatigue failures are eliminated because shear stress between the furnace and the rear tube sheet is greatly reduced.

 Solid Efficiency

• Up to 83% efficiency
• Three-pass design captures additional flue gas heat after heating primary surface
• Dual fuels: natural gas, oil, biogas

 Simplicity of Design

• No complex controls which require intensive training
• Fewer moving parts reduces incidence of failure and required retuning

 Compact Design

• Greatly reduced footprint, as compared to industry 3 and 4 pass boilers, given relatively large diameter and short furnace design

 Low NO_x Emissions

• Less than 30ppm NOx

_{Engineering data from the previous website can be found at: http://www.sellersengineering.com/engdata.asp . CAD drawing and design templates from the previous website can be found at: http://www.sellersengineering.com/producttemp.asp}