Product Name :HG1
Detail :

Double eccentric high performance butterfly valve for installation between flanges DIN EN 1092-1, PN 10 – PN 40, ANSI 150/300. DN 50 – DN 600 GEFA-MULTITOP Automation system Exchangeable flange for direct mounting of actuators

  • Production monitored by TÜV WO/TRD 100
  • Firesafe approval according to BS 6755, part 2
  • CE identification complies with the safety standards of the European pressure equipment directive PED 97/23/EC
  • GOST-R Certificate for the Russian Federation
  • Pressure test:
    DIN EN12266-1, P10/P11/P12-A
    DIN 3230,T3 – BA/BO-1, DIN3230,T5,T6
  • Approvals:
    Germanischer Lloyd, Lloyd´s Register of Shipping, Det Norske Veritas (DNV)

Torque Chart

Product Advantages
  • Easy and exact installation
    Due to body location holes for all standard flanges
  • Easy service
    The axial centering of the shaft can be easily reached and is prepared for later service works The seat is easily accessible, if replacement is necessary only the insert ring needs to be removed, resulting in short repair time
  • Excellent tightness
    With increasing differential pressure the contact pressure of the seat against the spherical sealing area of the disc is increased. The sealing function gets higher with rising differential pressure and ensures absolute tightness at lowest differential pressures up to PN 40 / PN 63
  • Safety (TA-Luft option)
    The shaft sealing can be retightened and is located below the mounting flange, thus adjustment is possible without dismounting the actuator. Also certified for use with oxygen.
  • Reliability
    The double eccentric principle with spherical sealing surface at the disc allows operation with a minimum of wear and offers at the same time the highest level of tightness and lowest torques
  • The double-eccentric principle
    Due to the double displacement of the shaft the disc is raised up from the seat at the beginning of the opening movement. The seat is then free from heavy pressure over the whole circumference, this means that 90° turning is frictionless at even reduced torques.
  • Extremely long service life
    The insert ring of the body protects the seat efficiently against the medium and prevents wear such as erosion and abrasion
  • Economic and easy automation
    The standard mounting flange according to DIN 3337 allows mounting of the actuator without interrupting the stem, thus no additional hysteresis occurs

Application & Industries
  • Water / Sewage
  • Chemical, petrochemical
  • and pharmaceutical industry
  • Colouring, Varnish, Dyeing factories

Application Range
  • Water / Sewage
  • Engineering
  • Food industry
  • Chemical and petrochemical industry
  • Colouring, Varnish, Dyeing factories

Technical Data
  • Nominal sizes:
    DN 50 – DN 600
  • Pressure Class
    DN50 - DN300: PN10 - PN40, ANSI 150/300 DN300 - DN500: PN10-PN25, ANSI 150 DN600: PN10/16, ANSI 150
  • Face-to-face dimension:
    DIN 3202 - K1 (K2 / K3) EN 558 T1 - line 20 (25 / 16)
  • Control range:
    10° - 90° opening angle
    15° - 70° linear characteristic
  • Top flange:
    DIN 3337 - ISO 5211 GEFA-MULTITOP Automation system,