The ROT-44 is an extra-large 160-liter (44-gallon) pressure tank designed for commercial reverse osmosis systems, including standard shops, large restaurants, schools, and public activities, serving up to 40 people with safe, pure, high-pressure water.
It has a maximum operating pressure of 7 bar (100 psi) and a maximum temperature of 90 °C (194 °F). Pre-charged with 100% nitrogen to 0.5 - 0.7 bar (7-10 psi) for stable performance unaffected by temperature.
This stand-model tank measures 55.0 cm (21.7 inches) in diameter and 93.3 cm (36.7 inches) in height, featuring a heavy-duty plastic base for sturdy support in high-traffic commercial environments.
Product Overview
The ROT-44 is a 160-liter (44 gallon) diaphragm pressure tank engineered specifically as a high-capacity Commercial Reverse Osmosis (RO) drinking tank. Designed to process 160 liters per hour, the ROT-44 securely stores a massive volume of purified water and delivers it into the plumbing system with controlled, steady pressure.
ROT-44 is ideal for commercial and public 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 a polypropylene liner and a DIN 4807-compliant butyl rubber diaphragm, the ROT-44 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 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-44 |
| Total Tank Volume | 160 liters / 44 gallons |
| Diameter | 55.0 cm / 21.7 inch |
| Height | 93.3 cm / 36.7 inch |
| Net Weight (NW) | 23.8 kg / 52.5 lbs. |
| Gross Weight (GW) | 27.5 kg / 60.6 lbs. |
| Shipping Volume | 10.04 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 | 1-1/4” NPT Stainless Steel |
| Liner Material | Polypropylene (FDA grade) |
| Diaphragm Material | Butyl Rubber (DIN 4807 compliant) |
| Shell | Cold 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-44 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, as the largest in the ROT series, the ROT-44 holds 160 liters (44 gallons) and supports a massive commercial system rate of 160 liters per hour. It is perfectly suited for schools, large public activities, and 30-table restaurants serving around 40 people.
No. The ROT-44 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.