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BUT

3-way unit valve, PN 16 (el.)

Model BUT

How energy efficiency is improved

Linear mixture without loss through leakage in the control passage for energy-efficient control

Features

  • Regulation of fan coil units, air secondary-treatment units, heating zones and two-pipe systems with heat exchanger in combination with AXF 217S, AXM 217(S), AXS 315S and AXT 301 actuators for unit valves
  • Flat-sealing standard version
  • Special model for fan coil units with cast-on bypass T-piece
  • Control passage closed when spindle is pushed in
  • Used as a control valve
  • Valve with male thread as per DIN EN ISO 228-1, class B
  • Valve body made of cast brass
  • Stainless-steel spindle
  • Plug with soft seal made of EPDM for control passage and mixing passage
  • Stuffing box with O-ring seal
  • Water quality as per VDI 2035