---
product_id: 618789133
title: "Watts Water Technologies GIDDS-1030402 WATTS Expansion Tank"
brand: "watts"
price: "VT96560"
currency: VUV
in_stock: false
reviews_count: 5
category: "Watts"
url: https://www.desertcart.vu/products/618789133-watts-water-technologies-gidds-1030402-watts-expansion-tank
store_origin: VU
region: Vanuatu
---

# 3/4-inch male connection 3.42 gal max volume Pre-pressurized steel tank Watts Water Technologies GIDDS-1030402 WATTS Expansion Tank

**Brand:** watts
**Price:** VT96560
**Availability:** ❌ Out of Stock

## Summary

> 💧 Keep your water system calm and efficient with Watts Expansion Tank!

## Quick Answers

- **What is this?** Watts Water Technologies GIDDS-1030402 WATTS Expansion Tank by watts
- **How much does it cost?** VT96560 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/618789133-watts-water-technologies-gidds-1030402-watts-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

- • **Compact & Robust Design:** Steel construction with a manageable 3.95 kg weight fits easily in tight spaces
- • **Durable Butyl Diaphragm:** Prevents water-air contact ensuring long-lasting, maintenance-free performance
- • **Silent Pressure Balance:** Eliminates noisy pipe banging for a peaceful home environment
- • **Universal Compatibility:** Works seamlessly with gas, oil, or electric direct-fired water heaters
- • **Certified Quality Assurance:** IAPMO listed and ANSI/NSF 61 certified for safe potable water use

## Overview

The Watts Water Technologies GIDDS-1030402 Expansion Tank features a 3.42-gallon capacity with a durable butyl diaphragm inside a pre-pressurized steel tank. Designed to absorb thermal expansion in potable water systems, it supports up to 150 psi pressure and fits standard 3/4-inch male connections. Certified for safety and compatibility with all direct-fired water heaters, it ensures quieter pipes and balanced water pressure for a hassle-free home water experience.

## Description

Series PLT Potable Water Expansion Tanks are designed to absorb the increased volume of water created by thermal expansion and to maintain balanced pressure throughout the potable water supply system. Series PLT tanks feature a pre-pressurized steel tank with an expansion membrane that prevents contact of the water with the air in the tank. This prevents loss of air to the water and ensures long and trouble-free life for the system. These tanks may be used with all types of Direct Fired Hot Water Heaters (gas, oil or electric) and hot water storage tanks. IAPMO listed and ANSI/NSF 61 certified. Maximum Pressure: 150psi (10 bar).

Review: I wasn't sure if this would work, we've had banging pipes for a long time. Well... it absolutely eliminated ALL the banging pipes in my house. We have a front loading washing machine and for 8 years we could tell from anywhere in the house that the washing machine was running. Once I installed this expansion tank, my wife had to go back to the laundry room twice to make sure the washer was actually running. Even I couldn't believe it was working so well. So simple to install but make sure you put enough wraps of teflon tape around the joint. I only put three and had to go back and redo it with 8 to stop a minuscule drip. Also, it can be heavy when half filled with water, make sure you have built a sturdy base. I don't know why they can't weld a bracket to hang these from right on the tank?? Highly recommended if you can hear your pipes when the water is moving through the pipes.
Review: I haven't installed yet, will update in future if disappointed with product. As of now, appears to be of quality construction and sound design. Received in a very timely manner.

## Features

- Butyl diaphragm
- 3/4-inch male connection
- Pre-pressurized
- Stainless steel inlet
- Acceptance volume: Max 3.42 G at 150psi

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002JEQGYO |
| ASIN  | B002JEQGYO |
| Batteries Included? | No |
| Batteries Required? | No |
| Customer Reviews | 4.4 4.4 out of 5 stars (108) |
| Customer reviews | 4.4 4.4 out of 5 stars (108) |
| Date First Available | 27 June 2019 |
| Date First Available  | 27 June 2019 |
| Included components | Watts Potable Water Expansion Tank |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 3.95 Kilograms |
| Item model number | PLT-12 |
| Item model number  | PLT-12 |
| Manufacturer | Wilo |
| Manufacturer  | Wilo |
| Material | Steel |
| Part number | 67371 |
| Product Dimensions | 26.67 x 26.67 x 34.29 cm; 3.95 kg |
| Product Dimensions  | 26.67 x 26.67 x 34.29 cm; 3.95 kg |
| Temperature Range | 45-200 Degrees Fahrenheit |

## Images

![Watts Water Technologies GIDDS-1030402 WATTS Expansion Tank - Image 1](https://m.media-amazon.com/images/I/515drSb84gL.jpg)
![Watts Water Technologies GIDDS-1030402 WATTS Expansion Tank - Image 2](https://m.media-amazon.com/images/I/51AYkE7EG6L.jpg)
![Watts Water Technologies GIDDS-1030402 WATTS Expansion Tank - Image 3](https://m.media-amazon.com/images/I/51XSK1oGOmL.jpg)
![Watts Water Technologies GIDDS-1030402 WATTS Expansion Tank - Image 4](https://m.media-amazon.com/images/I/51o3dDCSL9L.jpg)
![Watts Water Technologies GIDDS-1030402 WATTS Expansion Tank - Image 5](https://m.media-amazon.com/images/I/615gVvyC3nL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by P***S on 11 September 2015*

I wasn't sure if this would work, we've had banging pipes for a long time. Well... it absolutely eliminated ALL the banging pipes in my house. We have a front loading washing machine and for 8 years we could tell from anywhere in the house that the washing machine was running. Once I installed this expansion tank, my wife had to go back to the laundry room twice to make sure the washer was actually running. Even I couldn't believe it was working so well. So simple to install but make sure you put enough wraps of teflon tape around the joint. I only put three and had to go back and redo it with 8 to stop a minuscule drip. Also, it can be heavy when half filled with water, make sure you have built a sturdy base. I don't know why they can't weld a bracket to hang these from right on the tank?? Highly recommended if you can hear your pipes when the water is moving through the pipes.

### ⭐⭐⭐⭐⭐ Review
*by D***D on 14 April 2017*

I haven't installed yet, will update in future if disappointed with product. As of now, appears to be of quality construction and sound design. Received in a very timely manner.

### ⭐⭐⭐⭐⭐ Review
*by K***T on 20 December 2025*

OEM. Worked Just Fine!

## Frequently Bought Together

- Watts Water Technologies PLT-12 WATTS Expansion Tank, 4.5 Gallon, Gray
- 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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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-15*