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BF31 butterfly valves are interception devices for average/low pressure gas pipelines.

They may be used also for intercepting liquids when a hermetic seal, low pressure losses and compact construction in the flow direction are required.
Features
  • Hermetic internal seal with shut valve
  • Low pressure losses
  • Can rotate butterfly through  360° so the seat is self-cleaning without removing the body from the pipe
  • Not fitted permanently to pipe, as both flow directions are possible
  • Butterfly with sealing ring
  • Chromium-plated body spherical seat for longer life with hermetic internal seal and low control torques
  • Highly reliable
  • Built to UNI 9245 standard
  • Face to face according to UNI 9245 and ISO 5752, MSS - SP 67, BS 5155-74 standard

Specifications

Maximum Operating Pressure

  • 16 to 19 bar

Media

  • Water, Gas, Compressed Air, Hydrocarbons

Process Connection

  • UNI PN 16, Class ANSI 150 RF

Enclosure, Body Material

  • Body: P355NH

Material of Construction

  • Butterfly: ASTM A350 LF2 CL.1
  • Stem: X16CrNi16-2 EN 10088-3 (AISI 431)
  • Fixing Screws: X5CrNi18-10 EN 10088-3 (AISI 304)

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