WW-H-191D, FEDERAL SPECIFICATION: HEATER, FLUID, INDUSTRIAL (INSTANTANEOUS, STEAM, WATER CONVERTOR TYPE) (01-FEB-1990) [NO S/S DOCUMENT]

WW-H-191D, FEDERAL SPECIFICATION: HEATER, FLUID, INDUSTRIAL (INSTANTANEOUS, STEAM, WATER CONVERTOR TYPE) (01-FEB-1990) [NO S/S DOCUMENT]., This specification covers shell-and-tube water heaters that use steam in the shell to raise the temperature of a continuous flow of water.