ISO 9001:2008|Low Lead IAPMO Listed

• Accepts expanded water as system temperature rises to reduce pressure build-up Helps reduce energy consumption and reduces system wear Suitable in propylene glycol applications with mixtures up to 50% Heavy-duty butyl/EPDM diaphragm Steel system connection Projection welded air valve 2.5 gal maximum acceptance volume

The one that started it All™. Extrol® expansion tanks accept expanded fluid in closed loop hydronic systems to control pressure build-up, improve comfort and help reduce energy costs. Nearly seven-decades after inventing the first diaphragm expansion tank, AMTROL® lineup now includes specialty models engineered for modern, high efficiency systems. None of it would have been possible without Extrol® - the one that started it All™.