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Item #:
13911000
GTS3, 3 Gallon RO Water Filtration System Expansion Tank, Compact Reverse Osmosis Water Storage Pressure Tank
Item #:
13911000
BDT 9311
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
Order now and get it around Wednesday, July 29
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This RO water tank stores and keeps your water free from any impurities and harsh chemicals.
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What Stands Out
Compact Design
Designed to fit in tight spaces, this 3-gallon tank offers efficient water storage without occupying much room, making it ideal for small homes or apartments.
High Pressure
The tank is engineered to maintain optimal pressure, ensuring a steady flow of purified water, eliminating delays in your daily water needs.
Free Ball Valve
Included 1/4" ball valve enhances convenience during installation and maintenance, offering an all-in-one solution for efficient and effective water filtration.
Product Details
- Reverse Osmosis Tank: Made from 100% food grade materials, this RO water tank stores and keeps your water free from any impurities and harsh chemicals. The perfect addition to any RO water system.
- Easy to Install Water Tank: RO tank replacements include free tank ball valve for easy set-up and replacement with 1⁄4” quick connect design.
- High Quality Water Tank: This water storage tank is made from durable deep-drawn steel domes with precision welding to ensure long lasting value for your RO water system.
- Water Tank Dimensions: This compact water tank is designed (14 x 9 x 9) to fit under most kitchen sinks. Stores up to 2.2 gallons of water for on-demand filtered drinking water.
| Other Special Features of the Product | Durable |
| Container Type | Tank |
| Installation Type | Under Sink |
| Purification Method | Reverse Osmosis |
| Power Source | Adapter |
| LowerTemperature Range | 33 Degrees Fahrenheit |
| Maximum Flow Rate | 0.8 Gallons Per Minute |
| Operating Pressure Range | 5-100 PSI |
| Upper Temperature Rating | 100 Degrees Fahrenheit |
| Supported Water TDS Level Maximum (PPM) | 2000 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Item Dimensions L x W x H | 9"L x 9"W x 14"H (22.9 x 22.9 x 35.6 cm) |
| Capacity | 3 gallons |
| Item Weight | 6 Pounds (2.72 kg) |
| Brand Name | tankRo |
| Included Components | Tank |
| Model Name | GTS3 |
| Model Number | GTS3 |
| UPC | 653590999287 |
| Manufacturer | tankRo |
| Part Number | GTS3 |
| Unit Count | 1 Count |
| Material Type | BPA Free |
| Brand | tankRo |
| Special Feature | Durable |
| Product Dimensions (L x W x H) | 9"L x 9"W x 14"H (22.9 x 22.9 x 35.6 cm) |
| Material | BPA Free |
| Package Information | Tank |
Who Should Buy?
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Homeowners
Ideal for homeowners seeking efficient water storage solutions for their reverse osmosis water filtration systems.
-
Apartments
Perfect for apartment dwellers needing compact access to ample filtered water without large storage tanks.
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Health Enthusiasts
Beneficial for those prioritizing clean drinking water and investing in purification and storage systems.
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Large Families
May not suffice for larger households that require greater quantities of filtered water than 3 gallons.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is an RO water filtration system expansion tank used for?
Answer: An RO water filtration system expansion tank stores water produced by your reverse osmosis system, providing a steady supply of purified water for drinking and cooking. This tank alleviates pressure fluctuations in the system, ensuring optimal performance by maintaining adequate water levels. A 30-gallon tank is particularly beneficial for larger households or offices that require a higher demand of purified water, allowing you to access clean water easily without waiting for the system to refill. -
Question:
How do I install a 30-gallon RO water filtration tank?
Answer: Installing a 30-gallon RO water filtration tank involves connecting it to your existing water filtration system. First, shut off the water supply, then connect the tank to the water line using the provided fittings. Fill the tank with water and ensure all connections are secure to prevent leaks. It's essential to refer to the installation instructions specific to your model for accurate guidance. This setup will efficiently provide you with a constant flow of purified water for your home or office. -
Question:
What are the size and dimensions of a typical 30-gallon water tank?
Answer: A 30-gallon water tank is typically round and can vary in height and diameter. Common dimensions are around 24 inches in diameter and roughly 40-45 inches high. These dimensions make it suitable for basements or utility rooms, ensuring it fits comfortably while still being accessible for maintenance. Choosing the right size is crucial for your space and ensuring sufficient water storage for your needs. -
Question:
Can I use this tank with any RO system?
Answer: Most 30-gallon water tanks are compatible with standard reverse osmosis systems, provided they have the proper connections and specifications. However, it’s always recommended to check the compatibility with your specific RO unit to ensure seamless integration. Utilizing a tank that fits well with your system will enhance overall efficiency and ensure you have a reliable supply of purified water. -
Question:
What materials are those tanks made from?
Answer: A 30-gallon reverse osmosis water storage tank is often constructed from high-quality materials like stainless steel or food-grade plastic, designed to withstand internal pressure and prevent contamination. These materials ensure the water stays pure and safe to use. Using a well-constructed tank guarantees a long-lasting solution for water storage and enhances the performance of your RO system. -
Question:
How does the pressure in a water storage tank work?
Answer: The pressure in a water storage tank is maintained by an air bladder found inside the tank. As water fills the tank, it compresses the air bladder, creating pressure that pushes water out when you open the tap. Understanding this mechanism helps you monitor pressure effectively and ensures your RO system delivers water consistently. Regularly checking the pressure can help you maintain optimal performance. -
Question:
What maintenance does a 30-gallon RO water tank require?
Answer: Maintaining a 30-gallon RO water tank involves checking for leaks, ensuring connections are tight, and periodically testing the pressure of the air bladder. It’s also advisable to inspect the tank for any signs of wear or mineral build-up. Regularly ensuring maintenance can prolong the life of your tank and ensure consistent performance of your water filtration system, making it more efficient for your everyday needs. -
Question:
What are the advantages of having a larger water storage tank?
Answer: Having a larger 30-gallon water storage tank offers significant advantages, such as reducing the frequency of refilling and allowing for greater water availability during peak usage times. This is particularly beneficial for large families or offices. With a sustained source of purified water, you can enjoy the convenience of instant access without worrying about running out or waiting for the filtration process to complete. -
Question:
Where can I buy an RO Water Filtration System Expansion Tank 30 Gallon?
Answer: You can purchase an RO Water Filtration System Expansion Tank 30 Gallon at Ubuy. Ubuy offers a variety of models and brands, allowing you to find the one that best fits your reverse osmosis system and meets your storage needs. Shopping at Ubuy ensures a straightforward selection process with detailed product information to help you make an informed choice. -
Question:
Are there any safety considerations when using a water storage tank?
Answer: Yes, safety considerations include ensuring that the tank is installed correctly without signs of leaks and is made from safe, non-toxic materials. Additionally, avoid over-pressurizing the tank, which can lead to failure. Regular maintenance checks will help keep your system safe and efficient. Understanding these aspects ensures your water remains clean and minimizes the risk of accidents related to water pressure.
tankRo Under-Sink & Countertop Filtration GTS3 Editorial Review
The tankRO RO Water Filtration System Expansion Tank is a compact reverse osmosis water storage pressure tank which comes in 3 gallons and is ideal for use with reverse osmosis systems. Installation is easy and it does what it claims to. This tank works with a 40psi water system, and it circulates water through post filters before use to avoid any rubber taste in the water. Customers who purchased this tank reported positive experiences but also a few negative ones. One customer reported that the bladder had a slow leak after 4 months of use, while another said the previous tank lasted over 5 years. **
Customer Reviews & Ratings
1389 customers ratings
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5 Star
78%
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4 Star
11%
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3 Star
3%
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2 Star
2%
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1 Star
6%
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Pros
- Works well with reverse osmosis systems
- Compact and ideal for small spaces
- Easy to install
- Circulates water through post filters before use to avoid any rubber taste in water
Cons
- Bladder may have slow leaks for some customers
Platform Trust & Buyer Confidence
MT
Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer
“Accurate delivery timing given”
16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer
“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
LM
Leila
Verified buyer
“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer
“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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BDT 9311
Order now and get it around Wednesday, July 29
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Features & Benefits
- Made from 100% food grade materials for safety.
- Includes free tank ball valve for easy installation.
- Durable construction with precision welding for longevity.
- Compact design (14 x 9 x 9) fits under most kitchen sinks.
- Holds up to 2.2 gallons for on-demand filtered water.
- Perfect addition to any RO water system.
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