BF 31


The butterfly valve BF 31 is an interception device able to guarantee low pressure losses. It may be used also for intercepting liquids when a hermetic seal, low pressure losses and compact construction in the flow direction are required.

Suitable for use with natural gas and previously filtered non-corrosive gases, it is mainly used in medium and low pressure gas distribution networks.

For the Pietro Fiorentini Group, valves are produced by TIV Valves, a Group company specialized in the production of valves based in Rescaldina (MI). For more information visit the website.


  • Design pressure: up to 19 bar (ANSI 150)
  • Design temperature: from -10 °C to +150 °C (VITON), from -10 °C to +100 °C (NITRILE)
  • Nominal sizes: up to 24″
  • Flanges: ANSI 150 according to ASME B16.5 and PN 16 according to EN 1092
  • End to end dimensions: according to UNI 11354, ISO 5752, MSSSP 67, BS 5155-74
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