Diaphragm expansion vessel REFIX DE-100, 100L, 10 bar / 70°C, threaded connection G1", blue, for DHW, fire protection, underfloor heating, geothermal, standing, with replaceable membrane 7306600

Diaphragm expansion tanks – the key to a stable installation

The Refix DE-100 diaphragm expansion tank is a reliable solution that ensures maintaining optimal pressure in central heating, domestic hot water, fire protection, underfloor heating and geothermal systems. Its construction based on a bag membrane allows for compensation of changes in water volume resulting from temperature changes and equalization of water losses in the system. This translates into stable operation of the installation and protection of its elements from damage.

The Refix DE-100 tank is particularly recommended for installations with increased requirements in terms of corrosion protection. Made of high-quality materials, protected against corrosion, it guarantees long-lasting and trouble-free operation. It is a device intended for installation in a standing position and is characterized by a G1” threaded connection, which facilitates integration with the existing infrastructure. The blue color also makes it easier to identify the purpose of the tank – for domestic hot water installations.

Construction and application

The Refix DE-100 diaphragm tank is an essential element in every closed heating or water system. Its main task is to dampen pressure surges that can occur due to temperature changes in the water or the operation of devices. This protects pipes, valves and other installation elements from damage caused by excessive pressure or vacuum. In addition, the expansion tank compensates for water losses in the system, maintaining a constant volume and ensuring the proper operation of the entire installation. It has a PZH certificate, which confirms its safety for human health and the environment.

Advantages and benefits

• Versatility: ideal for DHW, underfloor heating, geothermal energy and fire protection installations – one device for many applications.
• Corrosion protection: elements in contact with water are properly protected, which extends the life of the device and the entire installation.
• Replaceable membrane: allows for easy maintenance and repair of the tank without having to replace the entire device (applies to models from 50 liters).
• Compliance with standards: has an approval in accordance with the pressure equipment directive 2014/68/EU – a guarantee of safety and reliability.
• Easy installation: G1” threaded connection facilitates integration with the existing hydraulic infrastructure.
• Pressure stability: maintains pressure within acceptable limits, protecting installation elements from damage.
• Compensation for volume changes: equalizes changes in water volume caused by temperature changes, ensuring stable system operation.

A capacity of 100 liters and a permissible working pressure of up to 10 bar make the Refix DE-100 tank suitable for both smaller and larger domestic and commercial installations. A height of 520 mm and a diameter of 280 mm allow for easy adaptation to the available installation space. The initial pressure of 4 bar ensures optimal system operating conditions from the start of use.