# Amtrol Therm-X-Trol ST-12 Expansion Tank

**Brand:** [Amtrol](https://shop.coreranger.com/brands/Amtrol)
**SKU:** 141N43
**Price:** $106.08 · in stock
**URL:** https://shop.coreranger.com/product/amtrol-therm-x-trol-st-12-expansion-tank-204296372

## Specifications

| Spec | Value |
|---|---|
| Model # | 141N43 |
| Material | Deep Drawn Steel |
| Internet # | 204296372 |
| Returnable | 90-Day |
| Store SKU # | 1001369650 |
| Finish Family | White |
| Product Depth (in.) | 11 in |
| Product Width (in.) | 9 in |
| Product Height (in.) | 15 in |
| Manufacturer Warranty | 7-year limited warranty |
| Nominal Tank Capacity (gallons) | 4 gal |

## Description

AMTROL ST-12 (Therm-X-Trol) is a water heater expansion tank, designed for use in domestic hot water heating systems to eliminate the potential hazards of water expansion. Water heater expansion tank is commonly installed in a domestic hot water system that contains a backflow preventer, a check valve or a pressure reducing valve. AMTROL ST-12 Applications: Residential water heaters, Laundromats, dormitories, office/apartment buildings, restaurants, etc.

• Provides efficient water and energy usage
• Prevents premature failure in plumbing fixtures and water heaters
• Eliminates hazardous pressure build-up in the system