# Watts Steel Thermal Expansion Tank

**Brand:** [Watts](https://shop.coreranger.com/brands/Watts)
**SKU:** DET-12-M1
**Price:** $91.86 · in stock
**URL:** https://shop.coreranger.com/product/watts-steel-thermal-expansion-tank-313437925

## Specifications

| Spec | Value |
|---|---|
| Model # | DET-12-M1 |
| Material | Steel Tank with an FDA-approved polypropylene liner and Butyl rubber diaphragm |
| Internet # | 313437925 |
| Returnable | 90-Day |
| Store SKU # | 1005430979 |
| Finish Family | Beige/Bisque |
| Product Depth (in.) | 11.20 in |
| Product Width (in.) | 11.00 in |
| Product Height (in.) | 15.40 in |
| Manufacturer Warranty | Watts (the "Company") warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. |
| Nominal Tank Capacity (gallons) | 4 gal |

## Description

This expansion tank controls thermal expansion of water in open domestic hot water supply systems. It absorbs the increased volume of water generated by the hot water heating source. Its' pre-pressurized steel tank uses an expansion membrane to prevent air/water contact for long system life.

• Expansion tank controls thermal expansion of water
• Pre-pressurized steel tank
• Uses an expansion membrane to prevent air/water contact