---
product_id: 514783728
title: "Potable Thermal Expansion Tank for Water Heater, 2.1 Gallon Capacity, 3/4 Inch MNPT Connection"
brand: "tt flex"
price: "₱10607"
currency: PHP
in_stock: true
url: https://www.desertcart.ph/products/514783728-potable-thermal-expansion-tank-for-water-heater-2-1-gallon
store_origin: PH
region: Philippines
---

# 2.1 gal capacity 3/4 inch MNPT connection 100% butyl diaphragm Potable Thermal Expansion Tank for Water Heater, 2.1 Gallon Capacity, 3/4 Inch MNPT Connection

**Brand:** tt flex
**Price:** ₱10607
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay cool under pressure with TT FLEX – the expansion tank that works as hard as you do!

## Quick Answers

- **What is this?** Potable Thermal Expansion Tank for Water Heater, 2.1 Gallon Capacity, 3/4 Inch MNPT Connection by tt flex
- **How much does it cost?** ₱10607 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/514783728-potable-thermal-expansion-tank-for-water-heater-2-1-gallon)

## 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

- • **Built to Last:** Appliance-grade finish resists corrosion, keeping your system sleek and durable over time.
- • **Compact Powerhouse:** 2.1-gallon capacity fits perfectly in tight spaces without compromising performance.
- • **Precision Engineering:** 100% butyl diaphragm and plastic liner ensure optimal separation of water and air for peak efficiency.
- • **Peace of Mind Warranty:** Backed by a 2-year warranty, guaranteeing reliable thermal expansion management.
- • **Plug & Play Installation:** Portable design with easy 3/4 inch MNPT connection for hassle-free setup by pros and DIYers alike.

## Overview

The TT FLEX Potable Thermal Expansion Tank offers a robust 2.1-gallon capacity with a 3/4 inch MNPT connection, designed to manage thermal expansion in closed-loop heating and cooling systems. Featuring a durable appliance-grade finish and a 100% butyl diaphragm, it ensures long-lasting corrosion resistance and optimal performance. Its compact, portable design allows for quick installation, making it the go-to choice for professionals and DIY enthusiasts seeking reliable system protection backed by a 2-year warranty.

## Description

Potable Thermal Expansion Tank for Water Heater, 2.1 Gallon Capacity, 3/4 Inch MNPT Connection

## Features

- 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 damaging your equipment.
- Easy to Install: The tank's compact size and easy-to-install design make it an ideal choice for professional contractors and DIY enthusiasts. 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | TT FLEX |
| Color | White Or Off-white |
| Item Weight | 5.3 Pounds |
| Mounting Type | portable |
| Is Electric | No |
| Manufacturer | TT FLEX |
| UPC | 768564454065 |
| Part Number | TTET21G |
| Item Weight | 5.3 pounds |
| Product Dimensions | 8 x 8 x 10.4 inches |
| Item model number | 2.1 Gallon |
| Size | 2.1 Gallon |
| Shape | 2.1 Gallon |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 2-year warranty. |

## Product Details

- **Brand:** TT FLEX
- **Color:** White Or Off-white
- **Item Weight:** 5.3 Pounds
- **Mounting Type:** portable
- **Is Electric:** No

## Images

![Potable Thermal Expansion Tank for Water Heater, 2.1 Gallon Capacity, 3/4 Inch MNPT Connection - Image 1](https://m.media-amazon.com/images/I/511fsV+UmrL.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.ph/products/514783728-potable-thermal-expansion-tank-for-water-heater-2-1-gallon](https://www.desertcart.ph/products/514783728-potable-thermal-expansion-tank-for-water-heater-2-1-gallon)

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-03-12*