--- product_id: 260963832 title: "WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank, Model #Plt-12, Stainless Steel Nipple, 4.5 Gallon, Lead Free - 1030402" brand: "watts" price: "2255.59 DT" currency: TND in_stock: true reviews_count: 5 category: "Watts" url: https://www.desertcart.tn/products/260963832-watts-water-technologies-gidds-1030402-watts-potable-water-expansion-tank store_origin: TN region: Tunisia --- # 4.5 Gallon Capacity 3/4-inch Stainless Steel Nipple Pre-pressurized for Instant Use WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank, Model #Plt-12, Stainless Steel Nipple, 4.5 Gallon, Lead Free - 1030402 **Brand:** watts **Price:** 2255.59 DT **Availability:** ✅ In Stock ## Summary > 💧 Elevate your water system with seamless pressure control! ## Quick Answers - **What is this?** WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank, Model #Plt-12, Stainless Steel Nipple, 4.5 Gallon, Lead Free - 1030402 by watts - **How much does it cost?** 2255.59 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/260963832-watts-water-technologies-gidds-1030402-watts-potable-water-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 Yet Powerful:** Sleek 26.67 x 26.67 x 34.29 cm footprint fits any setup - • **Safe & Lead-Free Construction:** Protect your home with certified potable water safety - • **Ready to Install Out of the Box:** Pre-pressurized design saves time and hassle - • **Maximize Water System Efficiency:** 4.5-gallon capacity handles pressure surges seamlessly - • **Durable Stainless Steel Connection:** Corrosion-resistant 3/4-inch male nipple ensures longevity ## Overview The WATTS WATER TECHNOLOGIES GIDDS-1030402 is a 4.5-gallon potable water expansion tank featuring a durable stainless steel 3/4-inch male nipple, pre-pressurized for immediate installation, and constructed lead-free for safe, long-lasting performance. Designed and manufactured in the USA, it optimizes water heater efficiency by managing pressure fluctuations reliably. ## Description WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank, Model #Plt-12, Stainless Steel Nipple, 4.5 Gallon, Lead Free - 1030402 Review: make sure you have built a sturdy base. I don't know why they can't weld ... - 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: A OK - 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 | | Brand | WATTS | | Brand Name | WATTS | | Capacity | 3.42 Gallons | | Customer Reviews | 4.6 out of 5 stars 112 Reviews | | Global Trade Identification Number | 00098268095753 | | Is Electric | No | | Manufacturer | Wilo | | Manufacturer Part Number | 67371 | | Material | Alloy Steel | | Material Type | Alloy Steel | | Model Number | PLT-12 | | Number of Items | 1 | | Smart Home Compatibility | Not Smart Home Compatible | | Style | Potable | | Style Name | Potable | | UPC | 098268095753 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Watts - **Capacity:** 4.5 Gallons - **Color:** Gray - **Power Source:** hydraulic_powered - **Product Dimensions:** 11.1"W x 14.7"H ## Images ![WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank, Model #Plt-12, Stainless Steel Nipple, 4.5 Gallon, Lead Free - 1030402 - Image 1](https://m.media-amazon.com/images/I/51qBGIh6GsL.jpg) ![WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank, Model #Plt-12, Stainless Steel Nipple, 4.5 Gallon, Lead Free - 1030402 - Image 2](https://m.media-amazon.com/images/I/615gVvyC3nL.jpg) ![WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank, Model #Plt-12, Stainless Steel Nipple, 4.5 Gallon, Lead Free - 1030402 - Image 3](https://m.media-amazon.com/images/I/610U7Wd+HmL.jpg) ![WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank, Model #Plt-12, Stainless Steel Nipple, 4.5 Gallon, Lead Free - 1030402 - Image 4](https://m.media-amazon.com/images/I/51-tlpGtt2L.jpg) ![WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank, Model #Plt-12, Stainless Steel Nipple, 4.5 Gallon, Lead Free - 1030402 - Image 5](https://m.media-amazon.com/images/I/51EuUMbCeQL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ make sure you have built a sturdy base. I don't know why they can't weld ... *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. ### ⭐⭐⭐⭐⭐ A OK *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. ### ⭐⭐⭐⭐⭐ Worked Just Fine! *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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/260963832-watts-water-technologies-gidds-1030402-watts-potable-water-expansion-tank](https://www.desertcart.tn/products/260963832-watts-water-technologies-gidds-1030402-watts-potable-water-expansion-tank) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-07*