Amtrol Inc products

Amtrol invented the thermal expansion tank to absorb expanded water in closed, hot water systems and protect the water heater. Since the beginning, we’ve kept the pressure on our competitors with features they just can’t match; like our patented Turbulator, antimicrobial liner, patented InSight service indicator cap and 50 PSIG precharge. When your water heater is on the line, we deliver.

Diatrol ASME tanks are designed to absorb pressure surges and eliminate water hammer in potable hot and cold water systems. Replaceable, heavy-duty bladder avoids costly tank replacement. Available in 53 to 528 gallon sizes, all Diatrol tanks are designed and constructed to ASME Section VIII, Division 1 standards.