--- product_id: 25189635 title: "4.0-Gallon Reverse Osmosis Water Storage Tank RO Tank by Charman" brand: "charman manufacturing" price: "200.36 DT" currency: TND in_stock: false reviews_count: 8 url: https://www.desertcart.tn/products/25189635-4-0-gallon-reverse-osmosis-water-storage-tank-ro-tank store_origin: TN region: Tunisia --- # 4.0-Gallon Reverse Osmosis Water Storage Tank RO Tank by Charman **Brand:** charman manufacturing **Price:** 200.36 DT **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** 4.0-Gallon Reverse Osmosis Water Storage Tank RO Tank by Charman by charman manufacturing - **How much does it cost?** 200.36 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/25189635-4-0-gallon-reverse-osmosis-water-storage-tank-ro-tank) ## Best For - charman manufacturing enthusiasts ## Why This Product - Trusted charman manufacturing brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description ## Images ![4.0-Gallon Reverse Osmosis Water Storage Tank RO Tank by Charman - Image 1](https://m.media-amazon.com/images/I/51mz9v2JoTL.jpg) ![4.0-Gallon Reverse Osmosis Water Storage Tank RO Tank by Charman - Image 2](https://m.media-amazon.com/images/I/71Ugqwph8OL.jpg) ![4.0-Gallon Reverse Osmosis Water Storage Tank RO Tank by Charman - Image 3](https://m.media-amazon.com/images/I/61Q75IAGXRL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Finally Needed To Re-Pressurized After 3 Full Year In Service! *by M***O on Reviewed in the United States on January 30, 2018* I wanted to give an update on this awesome RO storage tank. I initially gave my review telling how this tank had kept its pressure for many weeks. I was very impressed because my previous tank had to be re-pressurized every few weeks since the day I bought it. The seller's excuse was that it had a rubber tube inside & like any car tire, needed to be aired up over time. Well, for one thing, my car tires rarely need air...maybe a few pounds after several months...not a few weeks like my old tank did.Anyway, I am happy to report that it has been well over a year since I installed this NEW tank & to this day I have NOT needed to re-pressurize it. I know that it has lost a little pressure in all this time, but let me tell you...to this day, I still fill 2-3 gallons out at a time, which is more than enough for my household. Maybe, just maybe sometime later this year I will add some air to it...but no hurries...this tank is awesome!Update: 06-18-19Wanted to update this AWESOME tank. I finally repressurised this tank last month....after more than 3 YEARS...amazing! ### ⭐⭐⭐⭐⭐ Nice little storage tank and the price is right *by T***R on Reviewed in the United States on June 16, 2016* Double boxed -nicely packed and remember that the 4.0 Gallon holds 3.2 gallons of water part of the space is occupied by Air and the bladder. There is no bad taste - I only flushed it once. This unit is precharged and easy to setup with standard fitting for a 3/8-Inch by 1/4-Inch NPFT Female Elbow Shut Off Valve ### ⭐ Poor quality tank. *by A***R on Reviewed in the United States on September 14, 2017* This tank is less than a year old and does not hold pressure. The Jacob valve is tight, even replaced the center. would say the bladder is too light and starts leaking after a short time based on air coming from the faucet and needing constantly reloaded. --- ## 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/25189635-4-0-gallon-reverse-osmosis-water-storage-tank-ro-tank](https://www.desertcart.tn/products/25189635-4-0-gallon-reverse-osmosis-water-storage-tank-ro-tank) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-23*