Brochure

Amtrol invented the thermal expansion tank to control pressure build-up in closed, potable
water systems. This prevents the water heater pressure relief valve from opening, saves
energy and eliminates a potential safety hazard. All Therm-X-Trol expansion tanks are
made in the USA in our ISO 9001:2015 certied facility.
Fresh Water Turbulator
™
• Patented diffuser agitates incoming water to
keep it tasting fresh and clean.
• Water-jet scrubbing action prevents sediment
from collecting inside the tank.
Antimicrobial Liner Protection
• Safe, Silver-Ion technology targets active
microorganisms; neutralizes bacteria on contact.
• Proprietary compound is molded into the water
reservoir lining; lasts for the life of the tank.
InSight
®
Indicator Cap
• Patented sight glass changes color if tank
needs replacing.
• Alerts homeowner or plumber to a problem
before damage can occur.
Silver Ions
Liner
Liner
Surface
Water
Silver Ion
Release
Bacteria
Bacteria
Silver Ion
Silver Ion Release
Fresh Water
Turbulator
™
High Grade Stainless
Steel Connector
Deep Drawn Steel Dome
Corrosion Proof Liner
with Antimicrobial
Protection
™
Grooved Diaphragm
Hoop Ring for a
permanent seal
Butyl Diaphragm
for extra long life
Welded Steel
Construction
50 psig Precharge;
The industry's highest
InSight
®
Indicator Cap
ST-1 for Tankless and POU Water Heaters
• Absorbs thermal expansion and
pressure surge to protect the
heat exchanger.
• Patented
air cell
technology
requires no
precharge
adjustment
or maintenance.
• 304L stainless
steel waterway.
• Big protection in a
compact size.
7-Year Warranty
• The industry's longest.
Normal
Operation
Clear/White
Replace
Tank
Discolored