18 L Diaphragm Expansion Vessel – Model MB18
The 18-liter MB18 diaphragm expansion vessel is an essential component for any closed-circuit heating system. It absorbs the expansion of the heat transfer fluid when the temperature rises, thus preventing dangerous overpressures in pipes, radiators, or boilers. Designed for domestic or professional applications, it combines reliability, compliance, and ease of installation.
Key Features
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Capacity: 18 liters
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Pre-charge: 1.5 bar (adjustable)
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Dimensions: Ø 317 mm x height 350 mm
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Connection: standard 3/4" thread
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Compliance: CE standard – applicable European directives
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Application: domestic or professional heating installations
Construction and Performance
The reinforced internal diaphragm of the MB18 resists additives present in heating circuits (antifreeze, corrosion inhibitors, etc.), ensuring increased longevity. Its steel body is protected by a durable anti-corrosion coating that prevents damage due to humidity or impact. The entire unit complies with CE safety and performance requirements.
Simplified Installation
The MB18 expansion vessel connects easily to the return of the heating circuit thanks to its standardized threading. The integrated pre-charge valve allows for easy pressure control or adjustment. Its compact size allows for easy installation in restricted technical spaces.
Maintenance and Durability
Maintenance is minimal: simply periodically check the diaphragm pressure (when cold), the absence of leaks, and the condition of the exterior coating. Its robust design and reliable sealing make it a durable and easy-to-maintain product.
Advantages
- Stable pressure maintenance in the circuit
- Protection of the boiler, radiators, and pipes
- Reduced risk of overpressure and hydraulic noise
- Extended lifespan of the heating system
- Quick installation and simplified maintenance
Applications
Ideal for installers, heating engineers, and individuals seeking a stable, durable, and secure heating system. Thanks to its optimal balance of capacity, pressure, and dimensions, the MB18 is perfectly suited for domestic installations and small collective circuits.
By choosing the MB18 expansion vessel, you ensure the protection, performance, and longevity of your heating installation.
