Amtrol 101-1 #15 Extrol Expansion Tank (2 Gallon Volume)
Extrol 15 SpecificationsFactory pre-charged 12 psiSystem connection 1/2" threadedMax. operating temperature 240FMax. operating pressure 100 psigExpansion tank volume 2.0 gallonsMax. accepted volume 0.9 gallonsHeight 12 5/8"Diameter 8"Shipping weight 5 lbsExtrol 15 ApplicationsClosed loop hydronic heating and radiant heating applicationsProduct LiteratureBrochure and sizing (pdf)Submittal data (pdf)Installation manual  Warranty (pdf)