--- product_id: 43888086 title: "Flextrol Hydronic Expansion Tanks - For Hot Water Heaters, Carbon Steel Shell 3/4 Inch MIP Connection, SBR Synthetic Rubber, 60 PSI, 210 Degrees Fahrenheit, Gray Color, 6.3 Gallons" brand: "highcraft" price: "418.98 DT" currency: TND in_stock: false reviews_count: 2 url: https://www.desertcart.tn/products/43888086-flextrol-hydronic-expansion-tanks-for-hot-water-heaters-carbon-steel store_origin: TN region: Tunisia --- # 210Β°F Max Temp 3/4 Inch MIP Connection 6.3 Gallons Capacity Flextrol Hydronic Expansion Tanks - For Hot Water Heaters, Carbon Steel Shell 3/4 Inch MIP Connection, SBR Synthetic Rubber, 60 PSI, 210 Degrees Fahrenheit, Gray Color, 6.3 Gallons **Brand:** highcraft **Price:** 418.98 DT **Availability:** ❌ Out of Stock ## Summary > πŸ”₯ Elevate Your Heating Game with Flextrol’s Power-Packed Expansion Tank! βš™οΈ ## Quick Answers - **What is this?** Flextrol Hydronic Expansion Tanks - For Hot Water Heaters, Carbon Steel Shell 3/4 Inch MIP Connection, SBR Synthetic Rubber, 60 PSI, 210 Degrees Fahrenheit, Gray Color, 6.3 Gallons by highcraft - **How much does it cost?** 418.98 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/43888086-flextrol-hydronic-expansion-tanks-for-hot-water-heaters-carbon-steel) ## Best For - highcraft enthusiasts ## Why This Product - Trusted highcraft brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Heat-Ready:** Handles high temps up to 210Β°F, ideal for demanding hot water heater environments. - β€’ **Built to Last:** Carbon steel shell with exclusive polypropylene liner ensures unmatched durability and leak resistance. - β€’ **Smooth & Silent:** Low profile design with full membrane depth eliminates diaphragm stretching for longer life and quieter operation. - β€’ **Pressure Perfect:** Operates safely up to 75 PSI, preventing dangerous pressure build-up in your heating system. - β€’ **Certified Confidence:** Factory leak tested and NSF61 certified for guaranteed safety and reliability. ## Overview The Flextrol Hydronic Expansion Tank is a robust 6.3-gallon solution designed to protect hot water heaters by preventing pressure build-up. Featuring a carbon steel shell, polypropylene liner, and SBR rubber diaphragm, it withstands up to 210Β°F and 75 PSI. Its low profile design extends diaphragm life, while factory leak testing and NSF61 certification ensure top-tier reliability. ## Description ## Features - Protects Your Heating Systems; PreVents Dangerous Pressure Build up; Eliminates Potential Leak Path - Features a Solid Carbon steel Construction with an Exclusive Polypropylene Liner, MIG Welding, SBR Rubber Diaphragm, and External Baked Epoxy-Polyester Coating for Superior PerFormance - Each Tank is Factory Leak Tested and NSF61 Certified - Max Operating Pressure 75 PSI; Temperature 210Β°F - Low Profile Tank Design with Full Membrane Depth Eliminates Stretching of Diaphragm, Providing Increased Life Cycle ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Everflow Supplies | | Part Number | GUI80 | | Item Weight | 9.1 pounds | | Product Dimensions | 13 x 13 x 17 inches | | Item model number | GUI80 | | Is Discontinued By Manufacturer | No | | Size | 6.3 Gallons | | Color | Gray | | Item Package Quantity | 1 | | Number of Handles | 1 | | Included Components | Hydronic Expansion Tank | | Batteries Included? | No | | Batteries Required? | No | | Warranty Description | 1 Year | ## Product Details - **Brand:** HIGHCRAFT - **Color:** Gray - **Manufacturer:** Everflow Supplies - **UPC:** 804595130766 - **Global Trade Identification Number:** 00804595130766 ## Images ![Flextrol Hydronic Expansion Tanks - For Hot Water Heaters, Carbon Steel Shell 3/4 Inch MIP Connection, SBR Synthetic Rubber, 60 PSI, 210 Degrees Fahrenheit, Gray Color, 6.3 Gallons - Image 1](https://m.media-amazon.com/images/I/51QfGExZCGL.jpg) ![Flextrol Hydronic Expansion Tanks - For Hot Water Heaters, Carbon Steel Shell 3/4 Inch MIP Connection, SBR Synthetic Rubber, 60 PSI, 210 Degrees Fahrenheit, Gray Color, 6.3 Gallons - Image 2](https://m.media-amazon.com/images/I/71+CjU15tPL.jpg) ![Flextrol Hydronic Expansion Tanks - For Hot Water Heaters, Carbon Steel Shell 3/4 Inch MIP Connection, SBR Synthetic Rubber, 60 PSI, 210 Degrees Fahrenheit, Gray Color, 6.3 Gallons - Image 3](https://m.media-amazon.com/images/I/61J3yCIf28L.jpg) ![Flextrol Hydronic Expansion Tanks - For Hot Water Heaters, Carbon Steel Shell 3/4 Inch MIP Connection, SBR Synthetic Rubber, 60 PSI, 210 Degrees Fahrenheit, Gray Color, 6.3 Gallons - Image 4](https://m.media-amazon.com/images/I/61rc9Dy6AsL.jpg) ![Flextrol Hydronic Expansion Tanks - For Hot Water Heaters, Carbon Steel Shell 3/4 Inch MIP Connection, SBR Synthetic Rubber, 60 PSI, 210 Degrees Fahrenheit, Gray Color, 6.3 Gallons - Image 5](https://m.media-amazon.com/images/I/61m21YvCvRL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality I am glad i did research and ordered this one *by K***R on November 7, 2020* I am using this for my boiler it was a perfect fit for my application ### ⭐⭐⭐⭐ Description states it is for heating system *by J***N on February 4, 2021* For those who commented that tank is junk, and tank blew apart; the tank is not rated for domestic (tap water) water systems. It is for heating systems (30 lbs. or less)I did not purchase this tank, but there needs to be some clarification for those who are looking to purchase one. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/43888086-flextrol-hydronic-expansion-tanks-for-hot-water-heaters-carbon-steel](https://www.desertcart.tn/products/43888086-flextrol-hydronic-expansion-tanks-for-hot-water-heaters-carbon-steel) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-18*