---
product_id: 582049340
title: "Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems"
brand: "watts"
price: "302870CFA"
currency: XOF
in_stock: true
url: https://www.desertcart.sn/products/582049340-watts-etx-15-2-1-gallon-non-potable-expansion-tank
store_origin: SN
region: Senegal
---

# 2.1 gal capacity 12 psi pre-charged 75 psi max pressure Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems

**Brand:** watts
**Price:** 302870CFA
**Availability:** ✅ In Stock

## Summary

> 💡 Keep Your System Flowing Smoothly!

## Quick Answers

- **What is this?** Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems by watts
- **How much does it cost?** 302870CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/582049340-watts-etx-15-2-1-gallon-non-potable-expansion-tank)

## Best For

- watts enthusiasts

## Why This Product

- Trusted watts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **🏠 Versatile Use:** Ideal for both residential and commercial hydronic heating systems.
- • **🛡️ Durable Design:** Constructed from carbon steel with an epoxy finish for long-lasting durability.
- • **⚙️ Easy Installation:** 1/2 inch MNPT connection and .302-32 inch charging valve for hassle-free setup.
- • **🔒 Reliable Pressure Control:** Maintains system pressure below relief valve settings for optimal performance.
- • **🌡️ Thermal Expansion Management:** Effectively absorbs increased water volume to prevent system stress.

## Overview

The Watts ETX-15 is a 2.1-gallon non-potable expansion tank designed for closed-loop hydronic heating systems. It effectively manages thermal expansion and maintains system pressure, ensuring longevity and reliability. Made from durable carbon steel with an epoxy finish, it features a pre-charged pressure of 12 psi and can handle a maximum pressure of 75 psi, making it suitable for both residential and commercial applications.

## Description

The Watts ETX-15 Non-Potable Water Expansion Tank is used in tandem with your hot water heater to absorb increased water volume resulting from hot water boiler heating and to keep system pressure below the relief setting. Use in closed-loop, non-potable water heating systems. Durable steel tank with 60 psi maximum working pressure

## Features

- This non-potable water expansion tank is for closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief sett of the relief valve
- The carbon steel tank is pre-charged at 12 psi, has a 2.1 gallon volume, and features a durable expansion membrane preventing minimizes loss of the air change and ensures long and trouble-free life for the system
- Made of carbon steel with epoxy finish, mounts to supply piping, with 1/2 inch MNPT system connection and .302-32 inch charging valve connection for on-site charging of the tank
- Maximum pressure 75 psi and can be used in residential or commercial hydronic heating systems
- Use in tandem with your hot water heater to absorb increased water volume ensuring long and trouble-free life for the system

## Product Details

- **Brand:** Watts
- **Color:** Gray
- **Material:** Carbon Steel
- **Capacity:** 2.1 Gallons
- **Shape:** Round

## Images

![Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems - Image 1](https://m.media-amazon.com/images/I/41pGt0DJdKL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Frequently Bought Together

- Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems
- Taco 400-4 1/8-Inch-NPT Float Air Hy-Vent
- Watts 0342691 30 PSI Pressure Relief Valve, Bronze, 3/4" 335 M2-030

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**Shop now:** [https://www.desertcart.sn/products/582049340-watts-etx-15-2-1-gallon-non-potable-expansion-tank](https://www.desertcart.sn/products/582049340-watts-etx-15-2-1-gallon-non-potable-expansion-tank)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-03*