Diaphragm expansion vessel REFIX DE-25, 25L, 10 bar / 70°C, threaded connection G3/4", blue, for DHW, fire protection, underfloor heating, geothermal, hanging, with non-replaceable membrane 7304000

Expansion vessel for pressure stabilization and volume equalization

The Refix DE-25 expansion vessel is a key component of central heating, domestic hot water, underfloor heating and geothermal systems. Its main task is to maintain stable pressure in the installation, compensate for changes in water volume due to temperature fluctuations and store a water reserve. This ensures the safe and efficient operation of the entire system, protecting it from damage caused by excessive or insufficient pressure.

Construction and application

The Refix DE-25 vessel with a capacity of 25 liters and a maximum working pressure of 10 bar is designed for installations that do not meet the requirements of DIN 1988. Made of high-quality materials, with a blue housing, it is mounted in a hanging position, saving space in the boiler room. It has a G3/4" threaded connection, which facilitates integration with the existing installation. Equipped with a non-replaceable diaphragm bag compliant with PN-EN 13831, it ensures long-lasting and trouble-free operation. It is an ideal solution for domestic water, fire protection, underfloor heating and geothermal systems.

Advantages and benefits

• Versatility: It will work in various installations – from domestic hot water systems to more advanced geothermal solutions.
• Installation protection: Protects the circuit against overload and short circuit - like most circuit breakers in this class. Maintains pressure within acceptable limits, preventing damage to system components.
• High quality workmanship: Parts in contact with water are protected against corrosion, guaranteeing the long life of the device.
• Safety: It has a PZH certificate, confirming safety of use in contact with drinking water.
• Easy installation: The G3/4" threaded connection facilitates quick and efficient connection to the existing installation.
• Compact dimensions: Height of 496 mm and diameter of 280 mm allow for installation even in limited space.
• Compliance with standards: Meets the requirements of the Pressure Equipment Directive 2014/68/EU, guaranteeing safety of use.