Expansion Tanks and Pressurisation Systems

Expansion Tanks, Pressurization, and Backflow Prevention Systems play a critical role in hydronic heating and cooling systems.

Some key benefits include:

  • Maintaining optimal performance and longevity of the system.
  • Preventing corrosion and other gas-related problems.
  • Providing accurate control of pressure changes in large volume and/or high-pressure systems.
  • Ensuring a fully closed system, preventing the diffusion of pressured gas into the water.
  • Backflow prevention meets safety and regulatory requirements by preventing backflow of contaminated water into the potable water supply.
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Expansion Tanks

Duraflex diaphragm expansion vessels are available in different pressure ranges and nominal volumes. Flat or cylindrical tanks are available depending on the application with a fixed diaphragm or replaceable bladder. These tanks require no electrical power for operation, making them a reliable and cost-effective solution.

Browse our range of Expansion Tanks

Pressurisation Systems

Pressurization stations are an advancement of traditional diaphragm expansion vessels used in large volume and high-pressure systems. The key difference is the addition of a control unit that facilitates the transfer of expansion volume to a separate vessel. This precise control ensures minimal pressure fluctuations within the system.

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Backflow Prevention

Reduced Pressure Zone (RPZ) Devices are designed to prevent the return of contaminated water to the water supply system. Duraflex includes a range of RPZ devices that are suitable for a range of low, medium and high Hazard applications.

Browse our range of Backflow Prevention Systems