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V-Flex

Pre-insulated valve for district heating systems

V-Flex is a tailor-made pre-insulated valve for district heating systems and provides greater control over heat networks. The V-Flex valve can be used to shut down entire networks or to isolate individual streets or properties, making network maintenance and extensions much easier.

Efficient and easy to use

V-Flex delivers zonal control and can be fusion welded directly to the main network. This allows operators to control and service PB networks much more efficiently.

The valve innovation includes a key-operated steel ball valve inside a polyethylene casing, insulated by PUR foam, and incorporates PB tails for a fully welded connection to a Polybutene pipe network.

The valves can be specified for single or twin pipe applications and come in a number of chamber sizes to accommodate depth variation, in turn providing flexibility in network or zonal control. Each chamber provides easy access to the valve and includes a lockable lid as an option.The benefits and features of V-Flex:

  • Casing – PolyethyleneV-Flex Valve with Chamber
  • Insulation – PUR Foam
  • Key operated steel ball valve
  • Polybutene pipe tails for fully welded connection
  • Temperature range up to 95°C
  • Body Carbon Steel P235GH
  • Ball Stainless Steel 1.4301
  • Stem Seal FPM
  • Ball Seal Carbon-reinforced Teflon PTFE+C
  • Valves can be operated with a T-handle up to DN250

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Case study

District heating as we understand it has its roots in the early days of the 20th century – but the big difference today is that schemes are not just about lowering consumption cost through efficiency…they’re also increasingly at the forefront of reducing our carbon footprint....more