MIL-B-2128 Revision D, May 7, 1991
BURNERS, STEAM AND OIL PRESSURE, ATOMIZING
The burners covered by this specification are intended for use on propulsion boilers aboard Naval ships. Type A burners are used on boilers that have lower capacities or with little fluctuation in steaming rates. Type C and type D burners are used in all types of boilers as specified.