Fluid heater

Fuel burning boiler

Gas- or oil-burning warm water, hot water or steam boiler

Grate assembly for a boiler

Heat exchanger

Heater, particularly an auxiliary vehicle heater

Heating boiler and temperature control therefor

Heating boiler for liquid or gaseous fuels

Industrial boiler utilizing multiple fuels and having reduced pa

Industrial boilers

Industrial gas operated liquid heater

Low pollutant - emission, high efficiency cyclonic burner for fi

Potable hot water storage vessel and direct-fired heat exchanger

Pre-formed insulating reversing chamber for modified scotch boil

Process and apparatus for ducting flue gas within a boiler

Solid fuel boiler of the radiating furnace tube type, method for

Steel heating boiler for liquid or gaseous fuels

Structural improvement in the burning chamber of a horizontal bo

Super low NO x , high efficiency, compact firetube boiler

Ultra-low NO.sub.x combustion apparatus