Taco 009-022RP Replacement Cartridge for 009-BF Series The beauty of Taco's "00" series circulators is in the simplicity Used on Models: 009-BC2, 009-BC2-W, 009-BC4, 009-BC4-1W, 009-BC4-W, 009-BF2, 009-BF2-W Also used with: 009-BF4, 009-BF4-J, 009-BF4-W, 009-BF5, 009-BF5-3, 009-BF5A, 009-BF5A-J, 009-BF5-J, 009-ZBF5, 009-ZBF5-1