Diaphragm expansion vessel CONTRAFLEX-18, 18L, 1.5/3 bar / 70°C, threaded connection R3/4", red RAL 3002, for heating and cooling systems, hanging mounting 26173

Expansion vessel for heating and cooling systems

This is a diaphragm expansion vessel from Flamco, model Contraflex-18, designed for closed heating and cooling systems. Its function is to compensate for volume changes in the medium resulting from temperature fluctuations, maintaining stable pressure in the installation. This is crucial for the efficient and safe operation of the entire system. The vessel is particularly useful in installations where glycol is used as an antifreeze agent.

Construction and application

The Contraflex-18 vessel is characterized by a solid construction and high quality workmanship. It is made of durable materials, and the SBR membrane ensures reliable operation in a wide temperature range – from -10°C to 70°C. The R3/4" threaded connection facilitates installation and integration with the existing system. The vessel is designed for vertical mounting and has a capacity of 18 liters, making it a suitable choice for various applications – from domestic heating systems to larger industrial installations. It is worth mentioning its compliance with EN12828 standard and Pressure Equipment Directive PED 2014/68/EU, which confirms its safety and reliability.

Key features and benefits

• Glycol resistance: The SBR membrane is resistant to glycol concentrations up to 50%, allowing the vessel to be used in installations with freeze protection.
• Nitrogen filling: Nitrogen filling ensures stable pre-pressure for a longer time, minimizing the need for adjustment and maintenance.
• Easy installation: The unpainted threaded connection guarantees quick and trouble-free connection to the installation.
• Quality control: Each vessel undergoes rigorous factory testing, ensuring high quality and reliability of the product.
• Wide temperature range: The ability to operate in a temperature range from -10°C to 70°C makes the vessel universal and can be used in various conditions.
• Safety: Compliance with EN12828 standards and Pressure Equipment Directive PED 2014/68/EU guarantees safe use.
• Durable construction: The galvanized ring connecting the two halves of the vessel ensures durability and corrosion resistance.
• RAL 3002 color: Red color facilitates identification of the vessel in the installation.

Whether you are an experienced installer or an end user, the Contraflex-18 expansion vessel is a sure choice for ensuring stable and safe operation of your heating or cooling system. Its solid construction, high quality workmanship and compliance with applicable standards guarantee long-lasting and trouble-free operation.