Amtrol Extrol SX-130V 81 Gallon Vertical Hydronic Expansion Tank

Prevent dangerous thermal expansion with this Amtrol Extrol SX-130V 81 gallon vertical hydronic expansion tank. This tank is designed for use in closed, non-potable, hydronic heating and chilled water systems. It accepts expanded water as the system temperature increases, which activates the diaphragm to keep pressure below the valve setting. This diaphragm is made of heavy-duty butyl/EPDM, and it also helps separate the system water from the tank's air charge. This handy tank saves energy, eliminates potential safety hazards, and reduces system maintenance. It can be used for propylene gl