Circulator Flanges

Taco 110-252F Package of 2 Freedom Cast Iron 1 inch Circulator Flanges with Nuts and Bolts

Air Vents

Taco 400-4 Hy-Vent 1/8 inch Male Water Boiler Float Type Air Vent

Boiler Drain Valves

Red and White RW-504-1/2 Brass 1/2 inch Copper or 1/2 inch Male Boiler Drain

Expansion Tanks

Amtrol® EXTROL® 102-1 EX Series Boiler System Expansion Tank, 4.4 gal Capacity, 0.57 Acceptance, 2.5 gal Acceptance, 100 psig Pressure, Heavy Duty Butyl/EPDM Diaphragm, 11 in Dia x 15 in H

Amtrol® EXTROL® 103-1 EX Series In-Line Hydronic Expansion Tank, 7.6 gal Capacity, 0.34 Acceptance, 2.5 gal Acceptance, 100 psig Pressure, Heavy Duty Butyl/EPDM Diaphragm, 11 in Dia x 23 in H