BT series high capacity plan disc butterfly

  • Plain disc
  • Equal % charactristic curve
  • Double eccentric design: low operational torque and enhance life endurance of the sealing elements
  • Low torque and smooth control
  • Wide range of applicability
  • DN up to 72’’

Many option:

  • Soft seat
  • Metal seat: Special garlock sealing ring together with the double eccentric design allows similar performance than a triple eccentric design
    high flow capacity and optimal leakage control, up to class VI.
  • Packing, fugitive emission compliant
  • Live loading packing
  • Exotic materials

Rating table

SIZES*3’’ up to 80’’ [DN80 up to DN2000]
PRESSURE RATINGS*ASME B16.5 up to #300 FOR FLANGED VERSION SPECIAL #600, 900 AND 1500 ONLY WITH WAFER/LUG CONSTRUCTION SPECIAL AWWA DESIGN FOR WATER APPLICATION
DESIGN TEMPERATURES*up to 315°C [up to 599 °F]

*Standard codes of reference:
ISA 75 / IEC60534 general design code, tests and inspection
ASME B16.34 / EN 12516 strength design code

Connection table

END CONNECTIONS:VALVE SIZE
ASME B16.5 for FLANGED version3’’ up to 80’’ [DN80 up TO DN2000]
RAISED FACE RF
RING JOINT RJ
WAFER CONSTRUCTION
LUG BODY

Standard codes of reference:
EN558, ISO 5752 end to end dimensions
MSS SP-6 surface finishing

Performance table

FLOW COEFFICIENT CV RANGEABILITYCV 285 UP to 265000 according to ISA 75 / IEC 60534-2
SEAT LEAKAGEUp to class VI according to ANSI/FCI 70-2 and IEC 60534-4
NOISE AND CAVITATION CONTROLaccording to ISA 75 series and IEC 60534-8
FUGITIVE EMISSION CONTROLUp to class A according to ISO 15848-1
OPERATING PERFORMANCESaccording to ANSI/ISA 75-25 and IEC 60534-4

Standard codes of reference:
EN558, ISO 5752 end to end dimensions
MSS SP-6 surface finishing

Materials table

FLOW COEFFICIENT CV RANGEABILITYCV 285 UP to 265000 according to ISA 75 / IEC 60534-2
SEAT LEAKAGEUp to class VI according to ANSI/FCI 70-2 and IEC 60534-4
NOISE AND CAVITATION CONTROLaccording to ISA 75 series and IEC 60534-8
FUGITIVE EMISSION CONTROLUp to class A according to ISO 15848-1
OPERATING PERFORMANCESaccording to ANSI/ISA 75-25 and IEC 60534-4

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