As The GB-Z Package Burner line provides reliable, efficient, proven performance for your heating needs. Model GB-Z burners will fire natural gas, propane, or other gaseous fuels. The burner head features a nozzle mix combustor for a reliable, robust flame pattern. GB-Z burners are suitable for commercial and industrial firetube and watertube boilers, firebox boilers, thermal fluid heaters and other various process heaters. The GB-Z burner delivers the engineering technology that can only come from the global authority in combustion and environmental solutions - Zeeco.