ROT-20 is a high-capacity pressure tank designed specifically for commercial reverse osmosis systems, public water setups, and large restaurants, providing safe, pure, and highly pressurized water delivery.
ROT-20 has a total volume of 80 liters (20 gallons). The tank is designed for a maximum operating pressure of 7 bar (100 psi) and a maximum operating temperature of 90 °C (194 °F). It is factory pre-charged to 0.5-0.7 bar (7-10 psi) with 100% nitrogen for stable system performance that remains completely unaffected by temperature fluctuations.
With a diameter of 39.0 cm (15.4 inches) and a height of 78.5 cm (30.9 inches), this stand-model tank comes with a heavy-duty plastic base, providing sturdy support and substantial water storage for high-demand environments.
Product Overview
The ROT-20 is an 80-liter (20 gallon) diaphragm pressure tank engineered specifically as a high-capacity Commercial Reverse Osmosis (RO) drinking tank. Designed to process 80 liters per hour, the ROT-20 — equivalent to the industry standard RO2000 — is highly suitable for supplying clean water for up to 20 people. It is the perfect solution for standard shops, large restaurants (e.g., table of 10 setups), and public water systems. It securely stores a massive volume of purified water and delivers it into the plumbing system with controlled, steady pressure.
ROT-20 is ideal for commercial applications. Its highly hygienic internal design separates the stored water from the compressed gas and completely prevents water from making direct contact with the internal metallic tank shell. Utilizing an FDA-approved polypropylene liner and a DIN 4807-compliant butyl rubber diaphragm, the ROT-20 ensures exceptionally safe operation, delivering cleaner, fresher, and better-tasting water while maintaining a tasteless water zone absolutely free of any rubber or plastic smells.
Manufactured with premium materials and holding top-tier certifications including NSF58, CE, and IAPMO, Aquasky RO tanks are produced in ISO 9001:2008 registered facilities to deliver a long service life, dependable performance, and the safest drinking-water compatibility on the market.
Certification
Specifications and Technical Data
| Parameter | Value |
| Model Number | ROT-20 |
| Total Tank Volume | 80 liters / 20 gallons |
| Diameter | 39.0 cm / 15.4 inch |
| Height | 78.5 cm / 30.9 inch |
| Net Weight (NW) | 11.3 kg / 24.9 lbs. |
| Gross Weight (GW) | 13.6 kg / 30.0 lbs. |
| Shipping Volume | 4.87 CUF |
| Operating Temperature | 90°C / 194°F |
| Factory Pre-charge | 0.5 - 0.7 bar | 7 - 10 psi |
| Max. Operating Pressure | 7 bar | 100 psi |
| Connection | 3/4” NPT Stainless Steel |
| Liner Material | Polypropylene (FDA grade) |
| Diaphragm Material | Butyl Rubber (DIN 4807 compliant) |
| Shell | Colled Rolled Carbon Steel |
| External Coating | Triple Coated Liquid Paint |
| Pre-charge Gas | 100% Nitrogen |
Key Features & Design Advantages
How the RO-PLUS Pressure Tank Works
ROT-20 stores supplemental water securely between the butyl rubber diaphragm and the polypropylene liner, while the nitrogen-filled air chamber maintains constant system pressure. When a drinking tap or coffee maker is activated, the compressed nitrogen pushes the purified water into the system at a controlled pressure.
This specialized design ensures stable performance, completely separates the water from the metal shell, and maintains a clean water zone that is completely free of rubber or plastic odors.
Key benefits
Typical Applications
Frequently Asked Question (FAQ)
Yes! The ROT-20 holds 80 liters (20 gallons) and delivers an 80 liters per hour flow rate, which is specifically recommended for standard shops and 10-table restaurants serving up to 20 people.
No. The ROT-20 is designed to be entirely maintenance-free during its service life. We utilize a specialized brass cap with an internal O-ring that guarantees no air loss from the air vent.
Additionally, it is the only RO storage tank in the industry pre-charged with 100% Nitrogen, which naturally resists permeation and prevents pressure fluctuations caused by temperature changes.
AQUASKY invented the leak-safe technology applied to the stainless connector 18 years ago, setting the benchmark for drinking water tanks. Manufactured in an ISO 9001:2008 registered facility and holding top-tier certifications like NSF58 and CE, it is recognized as one of the safest pressure vessels in the market.
Customized Colors & Packaging
We offer a wide range of customization options to match your exact needs - from custom colors to branded packaging and logo design.
Watch our video to explore the possibilities and see how we help your products stand out in the market.
Downloads & Certification Links
Detailed product information and data
Collection of all relevant product certifications.