---
product_id: 506172280
title: "TT FLEX Potable Thermal Expansion Tank for Water Heater - 2.1 Gallon, 3/4 in MNPT Connection"
brand: "tt flex"
price: "KD 45.64"
currency: KWD
in_stock: true
url: https://www.desertcart.com.kw/products/506172280-tt-flex-potable-thermal-expansion-tank-for-water-heater-2
store_origin: KW
region: Kuwait
---

# Appliance-Grade Rustproof Finish 2.1 Gallon Capacity 100% Butyl Diaphragm TT FLEX Potable Thermal Expansion Tank for Water Heater - 2.1 Gallon, 3/4 in MNPT Connection

**Brand:** tt flex
**Price:** KD 45.64
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your water heater cool under pressure with TT FLEX! 🛠️

## Quick Answers

- **What is this?** TT FLEX Potable Thermal Expansion Tank for Water Heater - 2.1 Gallon, 3/4 in MNPT Connection by tt flex
- **How much does it cost?** KD 45.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/506172280-tt-flex-potable-thermal-expansion-tank-for-water-heater-2)

## Best For

- tt flex enthusiasts

## Why This Product

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

## Key Features

- • **DIY Friendly:** Compact, lightweight design with easy installation—ideal for pros and home enthusiasts alike.
- • **Built to Last:** Appliance-quality paint finish resists corrosion and rust for long-term durability.
- • **Compact Powerhouse:** 2.1-gallon capacity fits perfectly in tight spaces without compromising performance.
- • **Advanced Separation Tech:** 100% butyl diaphragm and plastic liner keep water and air perfectly isolated.
- • **Smooth System Protection:** Effectively manages thermal expansion to prevent costly relief valve trips.

## Overview

The TT FLEX 2.1 Gallon Portable Thermal Expansion Tank is engineered to protect your water heater system by managing thermal expansion efficiently. Featuring a durable appliance-grade rustproof finish and a 100% butyl diaphragm with plastic liner, it ensures long-lasting separation of water and air. Its compact size and easy installation make it perfect for both professional contractors and DIYers aiming to prevent relief valve discharge and extend system life.

## Description

Water Quality Solutions for Your Family Improve the comfort, safety, and quality of life for your family with TT FLEX solutions. For the past 145+ years, TT FLEX has been providing people around the world with products, systems, and solutions that help convey, conserve, control, and safely use water. At TTFLEX, we help people install and maintain better systems, enhance water safety, and conserve critical resources through: · Water Quality Solutions · Plumbing & Flow Control Solutions · Drainage Solutions · HVAC & Hot Water

## Features

- TT FLEX water expansion tank is finished with appliance quality paint which helps prevent external corrosion and rust.
- This expansion tanks feature a 100% butyl diaphragm and plastic liner to separate the system water from the tanks air precharge.
- Inline thermal expansion tank,accepts expanded water caused by thermal expansion.
- Returns water to the system when hot water is used,it prevents the relief valve from going off.
- Easy to Install: The tank's compact size and easy-to-install design make it an ideal choice for both professional contractors and DIY enthusiasts alike. With its simple installation process, you can quickly and easily add this expansion tank to your system.
- Ample Capacity: The TT FLEX water expansion tank has a generous 2.1-gallon capacity, making it perfect for smaller heating or cooling systems. This capacity allows for efficient thermal expansion management without taking up too much space.
- Appliance-Grade Finish: The tank is finished with appliance-quality paint, which helps prevent external corrosion and rust. This finish not only enhances the durability of the tank but also adds an aesthetically pleasing look.
- High-Quality Construction: The tank features a 100% butyl diaphragm and plastic liner, which effectively separates the system water from the tank's air precharge. This construction ensures optimal performance and durability.
- Effective Thermal Expansion Management: The TT FLEX water expansion tank is designed to handle thermal expansion in closed-loop heating or cooling systems, ensuring that your system runs smoothly without causing damage to your equipment.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | TT FLEX |
| Part number | TTET21G |
| Item Weight | 2.4 Kilograms |
| Product Dimensions | 20.32 x 20.32 x 26.42 cm; 2.4 kg |
| Item model number | 2.1 Gallon |
| Size | 2.1 Gallon |
| Color | White Or Off-white |
| Material | Plastic |
| Shape | Round |
| Item Package Quantity | 1 |
| Plug Profile | portable |
| Special Features | Rustproof |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** TT FLEX
- **Capacity:** 2.1 Gallons
- **Special features:** Rustproof
- **Colour:** White Or Off-white
- **Material:** Plastic

## Images

![TT FLEX Potable Thermal Expansion Tank for Water Heater - 2.1 Gallon, 3/4 in MNPT Connection - Image 1](https://m.media-amazon.com/images/I/511fsV+UmrL.jpg)
![TT FLEX Potable Thermal Expansion Tank for Water Heater - 2.1 Gallon, 3/4 in MNPT Connection - Image 2](https://m.media-amazon.com/images/I/616tsDLPFmL.jpg)
![TT FLEX Potable Thermal Expansion Tank for Water Heater - 2.1 Gallon, 3/4 in MNPT Connection - Image 3](https://m.media-amazon.com/images/I/618HZrhKHkL.jpg)
![TT FLEX Potable Thermal Expansion Tank for Water Heater - 2.1 Gallon, 3/4 in MNPT Connection - Image 4](https://m.media-amazon.com/images/I/61N-ct0-r1L.jpg)
![TT FLEX Potable Thermal Expansion Tank for Water Heater - 2.1 Gallon, 3/4 in MNPT Connection - Image 5](https://m.media-amazon.com/images/I/61C5P2y1FAL.jpg)

## Available Options

This product comes in different **Model** options.

## Frequently Bought Together

- TT FLEX Potable Thermal Expansion Tank for Water Heater, 2.1 Gallon Capacity, 3/4 Inch MNPT Connection
- CARBO Instruments 2-1/2" Pressure Gauge,Water Pressure Test Gauge, 3/4" Female Hose Thread, 0-200 PSI with Red Pointer
- Eastman 86288 Universal Stainless Steel Water Heater Expansion Tank Mounting Bracket, 5 Gallon or 13 inches

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**Shop now:** [https://www.desertcart.com.kw/products/506172280-tt-flex-potable-thermal-expansion-tank-for-water-heater-2](https://www.desertcart.com.kw/products/506172280-tt-flex-potable-thermal-expansion-tank-for-water-heater-2)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-24*