MEGA-18 is a pressurized water system component designed for high-rise buildings, fire systems, and demanding long-distance pressure support. With an 18-liter (4.5-gallon) capacity, it reliably maintains water pressure at a set, consistent level.
Built for high-stress environments, this tank supports a robust maximum operating pressure of 16 bar. To ensure stable performance and prevent fluctuations caused by temperature changes, it is factory pre-charged with 100% nitrogen gas.
Measuring 28.0 cm in diameter and 36.5 cm in height, this durable mid-sized tank is designed for point-of-use installations. It is an ideal solution for booster pump setups requiring exceptionally high-pressure performance and reliable flow.
Product Overview
The MEGA-18 is an 18-liter (4.5-gallon) high-performance diaphragm tank, engineered as the definitive solution for compact residential systems and thermal expansion protection. Utilizing a specialized FDA-grade polypropylene liner integrated with a premium butyl diaphragm, it ensures a dedicated "Safe Water Zone" by preventing any contact between the liquid and the tank’s metallic shell.
Key technical advantages include a 100% Nitrogen pre-charge and a 16-bar (232 PSI) pressure rating, which significantly outperforms standard industry tanks. This configuration ensures more stable pressure cycles and minimizes pump "short-cycling," directly preventing motor burnout and extending equipment lifespan.
Constructed with a heavy-duty cold-rolled carbon steel shell and protected by a triple-grade epoxy powder finish, the MEGA-18 offers superior oxidation resistance. Equipped with a premium 304 Stainless Steel lead-free connector, this CE and ISO 9001 certified unit provides an energy-saving, maintenance-free solution for critical high-pressure applications.
Certification
Specifications and Technical Data
| Parameter | Value |
| Model Number | MEGA-18 |
| Total Tank Volume | 18 liters / 4.5 gallons |
| Diameter | 28.0 cm / 11.0 inch |
| Height | 36.5 cm / 14.4 inch |
| Net Weight (NW) | 4.7 kg / 10.4 lbs. |
| Gross Weight (GW) | 5.1 kg / 11.2 lbs. |
| Shipping Volume | 1.08 CUF |
| Operating Temperature | 90°C / 194°F |
| Factory Pre-charge | 4 bar | 58 psi |
| Max. Operating Pressure | 16 bar | 232 psi |
| Connection | 1” 304 Stainless Steel |
| Liner Material | Polypropylene |
| Diaphragm Material | Heavy-Duty Butyl Rubber (DIN 4807 compliant) |
| Shell | Cold Rolled Carbon Steel |
| External Coating | Triple Grade Blue Paint |
| Pre-charge Gas | 100% Nitrogen |
Key Features & Design Advantages
How the MEGA-PLUS Pressure Tank Works
The MEGA-18 stores supplemental water between the liner and the heavy-duty butyl rubber diaphragm. When a faucet is opened or an appliance demands water, the compressed nitrogen air chamber pushes the stored water into the system. This allows the system to meet low-volume water demands without immediately triggering the pump motor. By creating this efficient supply cycle, the tank minimizes pump cycling, stabilizes water pressure, and conserves energy.
Key benefits
Typical Applications
Frequently Asked Question (FAQ)
The MEGA-18 is a compact 4.5-gallon (18-liter) tank that stands 14.4 inches tall. It provides reliable pressure support for residential and light commercial systems with a 3 liters per minute flow rate.
Yes, the MEGA-18 is completely safe for drinking water because it uses a polypropylene liner and a pure butyl rubber diaphragm (compliant with DIN 4807) to keep water from touching the metal shell.
To safely handle 16-Bar high-pressure systems, it uses a 1-inch 304 Stainless Steel connector. This guarantees a highly durable, 100% rust-proof and lead-free seal.
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.