Amtrol EXTROL Boiler System Expansion Tank EX-30, 4.4 Gallons

The extrol ex-30 expansion tank is pre-pressurized and features a diaphragm design. for use in closed, non-potable, hydronic heating systems. accepts expanded water as system temperature rises to reduce pressure build-up. helps reduce energy consumption and reduces system wear. features factory pre-charge 12 psig maximum working pressure 100 psi maximum operating temperature 240 degree f water tight reservoir for expanded water.