Brochure

Extrol expansion tanks accept expanded fluid in closed-loop hydronic systems to
control pressure buildup, improve comfort and help reduce energy costs.
Nearly seven decades after inventing the first diaphragm expansion tank,
Amtrol’s 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
™
.
7-Year Warranty:
The Industry's Longest
Strong, deep-drawn
steel construction
Water tight reservoir
for expanded water
Thick, heavy duty Butyl/EPDM
diaphragm for long service life
Sealed air cushion; factory
pre-charged and 100% tested
Factory precharge: 12 PSIG
Max. working pressure: 100 PSIG
Max. operating temperature: 240° F
InSight
™
Indicator Cap
• Patented sight glass changes
color if tank needs replacing.
• Alerts user to a problem before
damage can occur.
Normal
Operation
Clear/White
Replace
Tank
Discolored