Diaphragm expansion vessel REFLEX S-12, 12L, 10 bar / 70°C, threaded connection G3/4", white, for heating, solar and cooling systems, vertical, with non-replaceable membrane 9702700

Expansion vessel with diaphragm – stability and safety of the installation

The Reflex S-12 diaphragm expansion vessel is a key element of closed heating, solar and cooling systems. Its task is to compensate for the expansion of the liquid and maintain the pressure in the installation at a safe level. This ensures stable and efficient operation of the entire system, protecting it from damage caused by pressure fluctuations. This is particularly important in installations powered by solar energy, where temperature changes are frequent and intense.

Construction and principle of operation

Inside the vessel there is a non-removable diaphragm that separates water from air. This design prevents gas from entering the water, which maintains its physical and chemical properties at a constant level. A G3/4” threaded connection facilitates integration with the existing installation, and the white housing provides an aesthetic appearance. The vessel is designed for wall mounting, which saves space in the boiler room or other technical room.

Key features and benefits

• High glycol resistance: The diaphragm is resistant to glycol content up to 50%, allowing the vessel to be used in installations with antifreeze fluid – an ideal solution for systems exposed to low temperatures.
• Compliance with standards: The product meets the requirements of PN-EN 13831 and has approval for use in accordance with Directive 2014/68/EU on pressure equipment – a guarantee of safety and reliability.
• Durable construction: A durable painted coating provides protection against corrosion and mechanical damage, which translates into a long service life of the device.
• Wide temperature range: The vessel is adapted to operate at a temperature of up to 70°C, and the entire system can operate at a temperature of up to 120°C – possibility of use in various heating installations.
• Capacity tailored to needs: A capacity of 12 liters makes the vessel suitable for both smaller domestic installations and larger commercial facilities.
• Easy installation: A G3/4” threaded connection and wall mounting facilitate and speed up installation.

Whether you are a professional installer or an end user, the Reflex S-12 expansion vessel will give you peace of mind and confidence in the operation of your heating or solar installation. This is an investment in the safety and energy efficiency of your home or business.