# Amtrol Therm-X-Trol Water Heater Expansion Tank for Tankless Water Heaters

**Brand:** [Amtrol](https://shop.coreranger.com/brands/Amtrol)
**SKU:** ST-1
**Price:** $32.63 · in stock
**URL:** https://shop.coreranger.com/product/amtrol-therm-x-trol-water-heater-expansion-tank-for-tankless-water-heaters-314305451

## Specifications

| Spec | Value |
|---|---|
| Model # | ST-1 |
| Material | Composite |
| Internet # | 314305451 |
| Returnable | 90-Day |
| Store SKU # | 1005661273 |
| Finish Family | White |
| Product Depth (in.) | 3.4 in |
| Product Width (in.) | 3.4 in |
| Product Height (in.) | 4 in |
| Manufacturer Warranty | Limited Warranty |
| Nominal Tank Capacity (gallons) | 1 gal |

## Description

The Therm-X-Trol ST-1 absorbs thermal expansion and water hammer in tankless and point-of-use water heaters to protect the heat exchanger. Simple to install, the ST-1 features a patented air cell and requires no precharge adjustment or maintenance. With a 304SS waterway and a 7-Year limited warranty, the ST-1 has big protection in a compact size.

• Big protection in a compact size
• Durable and corrosion proof
• Easy and simple installation with no maintenance