Flanged Boiler Assemblies offered by Hydraflex in the United Kingdom are crucial components designed to facilitate the ease of installation of temporary boilers on site, thereby eliminating the need for hard/fixed onsite piping​​. These assemblies are typically part of Hydraflex's range of metallic hose and bellows assemblies, which are either available in stock or can be custom-made to meet specific requirements​​.

Construction and Compliance

The construction of these assemblies involves robust materials to ensure durability and effectiveness. The hose is made of Stainless Steel 316L, and the braid is composed of Stainless Steel AISI 304/304L​. These assemblies are constructed to withstand a wide temperature range from -269°C to +600°C, with sizes ranging from ¼” NB to 16” NB​. The hoses and braids are manufactured in accordance with ISO 10380:2012 standards. Additionally, the PED 2014/68/EU approval and material certificates to EN 10204 are available for all sizes, ensuring compliance with the necessary regulatory standards​.


Hydraflex Flanged Boiler Assemblies are versatile, finding applications across various domains including:

  • Building Services
  • HVAC-R Piping Lines
  • Pump Connections
  • Vibration Producing Systems
  • Industrial Process & Applications
  • Steam connections
  • Chemical Process
  • Gas Connections
  • Ultra-High Vacuum applications
  • Exhaust systems​

Benefits and Features

The prime benefit of these assemblies is the ease of boiler installation they offer on site. The robust construction material ensures a long service life, high resistance to a broad spectrum of temperatures, and substantial pressure tolerance. The availability of customisation provides a solution tailored to specific operational needs.

Availability and Customisation

Hydraflex offers a range of Flanged Boiler Assemblies, both in stock and made to measure, to cater to different operational requirements​​. Specific cut lengths are available on request, and the assemblies come in a variety of sizes to suit different applications​​. Moreover, a wide range of end connections like threaded males and females, fixed and swivel flanges, cam fittings, and adaptors are available​​. 

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