---
product_id: 93884573
title: "PLT-5 Potable Water Expansion Tank 2.1 Gallon 3/4\" Male Connection"
brand: "watts"
price: "€ 300.70"
currency: EUR
in_stock: true
category: "Watts"
url: https://www.desertcart.hr/products/93884573-plt-5-potable-water-expansion-tank-2-1-gallon-3
store_origin: HR
region: Croatia
---

# 2.1 gallon capacity 3/4" male stainless steel connection Durable carbon steel with epoxy finish PLT-5 Potable Water Expansion Tank 2.1 Gallon 3/4" Male Connection

**Brand:** watts
**Price:** € 300.70
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your system cool under pressure with Watts’ powerhouse expansion tank!

## Quick Answers

- **What is this?** PLT-5 Potable Water Expansion Tank 2.1 Gallon 3/4" Male Connection by watts
- **How much does it cost?** € 300.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/93884573-plt-5-potable-water-expansion-tank-2-1-gallon-3)

## 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:** Carbon steel body with epoxy coating ensures corrosion resistance and longevity.
- • **Trusted Heritage:** From Watts Water Technologies, innovating water safety and efficiency since 1874.
- • **High-Pressure Ready:** Pre-pressurized tank designed to withstand demanding hydronic heating systems.
- • **Effortless Installation:** Versatile mounting options for quick, hassle-free setup on supply piping.
- • **Optimal Thermal Control:** Manages hot water expansion to protect your system from overpressure.

## Overview

The Watts PLT-5 Potable Water Expansion Tank offers a 2.1-gallon capacity with a robust carbon steel construction and epoxy finish, designed to control thermal expansion in closed-loop hydronic heating systems. Featuring a 3/4" male stainless steel connection and versatile mounting options, this pre-pressurized tank ensures system pressure stays below relief valve settings, enhancing longevity and efficiency. Trusted since 1874, Watts delivers reliable water system protection for both commercial and residential use.

## 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 water 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 potable water expansion tank is designed for easy installation, mounting directly to the supply piping whether standing on top of a pipe or hanging from one. Tank features a 3/4-inch male connection and a stainless steel inlet.
- 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 |
|---------------|-------|
| ASIN | B002JEODQW |
| Best Sellers Rank | #133,714 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #138 in Water Heaters |
| Brand Name | Watts |
| Capacity | 2.1 gallons |
| Color | Gray |
| Customer Reviews | 4.7 4.7 out of 5 stars (450) |
| Global Trade Identification Number | 00098268095739 |
| Included Components | Expansion Tank |
| Item Dimensions L x W x H | 8"L x 8"W x 11"H |
| Item Type Name | Expansion Tank |
| Item Weight | 0.27 g |
| Manufacturer | WATTS WATER TECHNOLOGIES |
| Manufacturer Part Number | GIDDS-1030401 |
| Material Type | Stainless Steel |
| Model Number | PLT-5 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Shape | Cylindrical |
| UPC | 098268095739 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Watts
- **Capacity:** 2.1 gallons
- **Color:** Gray
- **Material:** Stainless Steel
- **Product Dimensions:** 8"L x 8"W x 11"H

## Images

![PLT-5 Potable Water Expansion Tank 2.1 Gallon 3/4" Male Connection - Image 1](https://m.media-amazon.com/images/I/51vXeYllAmL.jpg)

## Available Options

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

## 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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**Shop now:** [https://www.desertcart.hr/products/93884573-plt-5-potable-water-expansion-tank-2-1-gallon-3](https://www.desertcart.hr/products/93884573-plt-5-potable-water-expansion-tank-2-1-gallon-3)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-10-05*