Diaphragm expansion vessel REFIX DD-25, 25L, 10 bar / 70°C, threaded connection G3/4", white, for DHW, vertical, with non-replaceable membrane, with tee Rp 3/4" 7380400

Diaphragm tanks – stability and installation protection

The REFIX DD-25 diaphragm expansion tank is a key element of every hot and cold domestic water installation, as well as heating systems. Its task is to maintain optimal pressure in the installation, eliminating the risk of damage caused by pressure fluctuations and ensuring user comfort. This device not only stabilizes the pressure but also compensates for changes in water volume due to temperature changes and makes up for water losses in the system.

This solution finds wide application in installations compliant with DIN 1988 standard, and combined with a water heater, it allows for noticeable water consumption savings. The design of the REFIX DD-25 diaphragm tank is designed for long-term and trouble-free operation, as confirmed by numerous certificates and approvals.

• Equipped with a non-replaceable bag diaphragm, meeting the stringent standards of PN-EN 13831, DIN 4807 part 5, KTW-C and W 270.
• Has approval for use in accordance with the pressure equipment directive 2014/68/EU and PZH certificate – a guarantee of safety and hygiene.
• The connection made of stainless steel ensures high corrosion resistance and meets the hygienic requirements of DIN 1988.
• The set includes a Rp 3/4" tee, facilitating installation in an existing installation.
• Optional mounting of Flowjet flow fittings allows for further optimization of system operation.

The REFIX DD-25 tank is characterized by a solid construction and both external and internal coating, which ensures its durability and resistance to environmental conditions. It is intended for direct mounting on the cold water pipe, which simplifies the installation process and minimizes the risk of leaks. Thanks to the use of a High-Flow flow director, it ensures an efficient water flow in the system. This solution will be appreciated by both professionals during installation and end-users benefiting from reliable protection of their water installation.