4820 - VALVES, NONPOWERED
J042 - MAINT/REPAIR/REBUILD OF EQUIP- FIRE FIGHTING/RESCUE/SAFETY EQUIP; ENVIRON PROTECT EQUIP/MATLS
J093 - MAINT/REPAIR/REBUILD OF EQUIPMENT- NONMETALLIC FABRICATED MATERIALS
N042 - INSTALLATION OF EQUIPMENT- FIRE FIGHTING/RESCUE/SAFETY EQUIPMENT; ENVIRON PROTECT EQUIPMENT/MATLS
Z1DA - MAINTENANCE OF HOSPITALS AND INFIRMARIES