Hydronic Expansion Tanks THE ONE THAT STARTED IT ALL ™
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, highefficiency systems. None of it would have been possible without Extrol – The One That Started It All™.
Models and Specifications Extrol® In-Line Models • 7-Year limited warranty. • Suitable for expansion control in most residential closed-loop boiler systems. • Patented InSight™ indicator cap provides visual check of tank condition. • In-line mounting adds convenience and space savings. EX Series Specifications Model Number Tank Volume (Gallons) Max. Accept. Volume (Gallons) Diameter (Inches) Height (Inches) EX-15 EX-30 EX-60 EX-90 2.0 4.4 7.4 14.0 1.0 2.5 2.5 11.
Specialty Models Fill-Trol® System • Eliminates the need for a separate, automatic fill valve. • Tank pressure controls system fill. • Fully adjustable up to a maximum working pressure of 100 PSIG. • 7-Year limited warranty. Model Number Tank Volume (Gallons) FT-109 FT-110 FT-111 FT-112 2.0 4.4 7.4 14.0 Removable Strainer Cold Water Supply Expansion Bypass Fill Gate Stem O-Ring Seal Automatic Shut-Off Valve 1.0 2.5 2.5 11.
Typical Installations Extrol® EX Models System Supply Fill-Trol® FT Models Air Vent Flow Check Valve System Return Air Purger Circulator Fill Valve Assembly Fill-Trol Valve and Tank Relief Valve EXTROL InSight Cap System Supply Air Vent Flow Check Circulator Valve Air Purger Boiler System Return System Fill Relief Valve Boiler InSight Cap Drain Valve Drain Valve Extrol® SX Models Radiant Extrol® RX Models Air Vent System Supply Flow Check Circulator Valve Fill Valve Assembly Heat
Extrol Sizing ® Extrol EX Series Sizing Boiler Net BTU Output (Thousands) Radiant Extrol® Sizing Type of Radiation Finned Baseboard Convectors or Unit Heaters Radiators Cast Iron Baseboard Cast Iron 25 50 EX-15 EX-15 EX-15 EX-15 EX-15 EX-30 EX-15 EX-30 75 EX-30 EX-30 EX-30 EX-60 100 EX-30 EX-30 EX-60 EX-60 EX-60 EX-90 EX-90 EX-90 125 EX-30 EX-60 150 EX-30 EX-60 175 EX-60 EX-60 200 EX-60 250 300 EX-60 EX-90 EX-60 EX-90 See SX Series Net BTU Output (Thousands) 3/8" 1/2
