---
product_id: 368836603
title: "WATTS WATER TECHNOLOGIES GIDDS-1030401 Potable Water Expansion Tank, Model #Plt-5, Stainless Steel Nipple, 2.1 Gallon, Lead Free"
brand: "watts"
price: "€ 532.71"
currency: EUR
in_stock: true
url: https://www.desertcart.fr/products/368836603-watts-water-technologies-gidds-1030401-potable-water-expansion-tank-model
store_origin: FR
region: France
---

# 2.1 Gallon Capacity 3/4" MNPT Connection Durable Steel Construction WATTS WATER TECHNOLOGIES GIDDS-1030401 Potable Water Expansion Tank, Model #Plt-5, Stainless Steel Nipple, 2.1 Gallon, Lead Free

**Brand:** watts
**Price:** € 532.71
**Availability:** ✅ In Stock

## Summary

> 💧 Keep Your Water Flowing Smoothly!

## Quick Answers

- **What is this?** WATTS WATER TECHNOLOGIES GIDDS-1030401 Potable Water Expansion Tank, Model #Plt-5, Stainless Steel Nipple, 2.1 Gallon, Lead Free by watts
- **How much does it cost?** € 532.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/368836603-watts-water-technologies-gidds-1030401-potable-water-expansion-tank-model)

## 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

- • **💪 Built to Last:** High-quality carbon steel with an epoxy finish for long-lasting durability and performance.
- • **🌍 Eco-Conscious Design:** Lead-free materials ensure safe drinking water while protecting our planet's resources.
- • **⚙️ Effortless Installation:** Versatile mounting options for quick and easy setup in any hydronic heating system.
- • **🔒 Unmatched Pressure Control:** Designed to maintain system pressure below relief settings, ensuring safety and efficiency.
- • **🔄 Innovative Expansion Technology:** Minimizes air charge loss, enhancing system efficiency and longevity.

## Overview

The WATER TECHNOLOGIES GIDDS-1030401 Potable Water Expansion Tank is a robust 2.1-gallon solution designed for both commercial and residential hydronic heating systems. Constructed from high-quality carbon steel with an epoxy finish, it ensures durability and efficiency. The tank features a 3/4" MNPT connection for easy installation and is engineered to manage thermal expansion, maintaining optimal system pressure. With a commitment to safe and accessible water, Watts Water Technologies has been a leader in innovative water solutions since 1874.

## Description

WATTS WATER TECHNOLOGIES GIDDS-1030401 Potable Water Expansion Tank, Model #Plt-5, Stainless Steel Nipple, 2.1 Gallon, Lead Free

## Features

- WATER EXPANSION TANK: With a 2.1 gallon volume, the Watts Potable Water Expansion Tank is designed for use in commercial and residential closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief setting of the relief valve.
- DURABLE CONSTRUCTION: This tank is constructed from high-quality carbon steel with an epoxy finish, ensuring long-lasting performance. It is also equipped with a durable expansion membrane that minimizes the loss of the air charge.
- VERSATILE MOUNTING: This tank is designed for easy installation, mounting directly to the supply piping. It features a 3/4" MNPT system connection for hassle-free mounting.
- HIGH PRESSURE CAPACITY: This pre-pressurized steel tank is built to withstand the demands of hydronic heating systems. It works in tandem with hot water heaters to absorb increased water volume, preventing system overpressure and ensuring the longevity and efficiency of the heating system.
- EVERY DROP COUNTS: Water. It's in our name and close to our hearts. Since 1874, Watts Water Technologies has been delivering innovative technologies that make the world's most precious resource safe and accessible. Everything we design is made to keep the Earth's most precious resource safer, cleaner, and more useful for our customers. Our family of brands offers one of the most varied product lines in the world, with world-class, water-related solutions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | WATTS |
| Colour | Gray |
| Material | Stainless Steel |
| Product Dimensions | 20.3L x 20.3W x 27.9H Centimeters |
| Capacity | 2.1 Gallons |
| Item Weight | 0.01 Ounces |
| Specification Met | Not Applicable |
| Shape | Oval |
| Global Trade Identification Number | 00098268095739 |
| UPC | 098268095739 |
| Manufacturer | WATTS WATER TECHNOLOGIES |
| Item model number | PLT-5 |
| ASIN | B002JEODQW |

## Product Details

- **Brand:** WATTS
- **Colour:** Gray
- **Material:** Stainless Steel
- **Product Dimensions:** 20.3L x 20.3W x 27.9H Centimeters
- **Capacity:** 2.1 Gallons

## Images

![WATTS WATER TECHNOLOGIES GIDDS-1030401 Potable Water Expansion Tank, Model #Plt-5, Stainless Steel Nipple, 2.1 Gallon, Lead Free - Image 1](https://m.media-amazon.com/images/I/51vXeYllAmL.jpg)

## Questions & Answers

**Q: if this tank comes recharged at 20 psi can I add air too it if needed? the watts I have now is recharged at 40 but is bad now**
A: Yes air can be added. There is a valve stem at the bottom of the tank. As I recall, I brought the pressure up to 40 lbs. I checked out their website to see what I use for my well pump switch that runs 40 to 60 lbs.

**Q: What is the connection size?**
A: The fitting connection is 3/4" NPT threads.

**Q: This tank will be used on an rv, do any of the tank suppliers offer either a wall mount or cradle type floor mount for the heavier tanks? thanks, ray**
A: Hi Ray, I purchased the same expansion tank, and mounted it on my wall. The bracket I used was called Hydro Claw, by storm king. Its not cheap at about $35 to $40, but it is a well made, heavy duty bracket. Very nice looking install. Even my plumber buddies are very impressed! Highly recomend. Good luck, and stay safe.
Jeff H.

**Q: Rv parks pressure varies. have my incoming pressure set at 40psi. but when using the pump, it comes on at 35psi, & off at 60psi. is this a fit 4 us?**
A: May be helpful, but the pump run pressure range of 15psi is probably normal

## Frequently Bought Together

- Watts PLT-5 - 2.1-Gallon Potable Water Expansion Tank, 3/4" Male Connection w/ Stainless Steel Inlet, Steel, Butyl Diaphragm, Maximum Pressure 150 psi
- 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 France*
*Store origin: FR*
*Last updated: 2026-01-26*