Diaphragm expansion vessel REFLEX G-400, 400L, 6 bar / 70°C, threaded connection G1", light grey, for heating and cooling systems, standing, with replaceable membrane 8521605

Diaphragm expansion vessel – stability and safety of the installation

The REFLEX G-400 expansion vessel is a key component of closed heating and cooling systems, ensuring stable pressure and safe operation of the entire system. Its task is to compensate for changes in water volume resulting from temperature fluctuations, which prevents excessive pressure increases and potential failures. The design with a replaceable diaphragm guarantees long-lasting and reliable operation.

Construction and application

The REFLEX G-400 diaphragm vessel utilizes the principle of dividing the internal space into water and gas sections using a diaphragm. This arrangement prevents gas from penetrating the water, maintaining its physical and chemical properties. This is an ideal solution for both installers and end-users looking for a reliable component for central heating and cooling systems. Made of high-quality materials, the vessel is resistant to corrosion and mechanical damage.

• Capacity is 400 liters – allows servicing installations with a significant volume of working fluid.
• Maximum working pressure is 6 bar – ensures safe operation under typical operating conditions.
• Maximum permissible temperature is 70°C – allows use in standard heating systems.
• It is equipped with a G1” threaded connection – facilitates installation and integration with the existing installation.
• Its dimensions are 1253 mm in height and 740 mm in diameter – allow it to be adapted to the available mounting space.
• Standing design ensures stability and ease of installation in various configurations.

The REFLEX G-400 vessel meets the requirements of PN-EN 13831 and VDI 4708/AD 2000 standards, and also has approval for use in accordance with the Pressure Equipment Directive 2014/68/EU, which confirms its high quality and safety of use. Additionally, durable external surface coating protects against corrosion, and a metal cover protects the pressure gauge and pre-pressure valve from mechanical damage. The availability of antifreeze (from 25% to 50%) expands the range of applications of the vessel, allowing it to be operated even in unheated rooms.