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Double eccentric wafer type




The double eccentric butterfly valves incorporates an easy replaceable seat for on/off and control services for liquids and gasses in the power, marine, chemical and petro chemical industry, on-/offshore applications.



  • Double offset shaft position
  • Shaft in PTFE lines bearings
  • Easy replaceable seat
  • Standardized actuation flange
  • Polymer or PTFE seat
  • Easy actuator automation
  • Low operating torques
  • High reliabililty
  • Excellent sealing properties
  • Suitable for vacuum conditions
  • Easy installation


Standard according to:                 EN-ISO - DIN – BS –API

Flange connection:                       DIN-PN 6/10/16 ANSI Class 125/150  JIS 5/10/16K*

Dimensions:                                 65 – 600mm

Maximum working pressure*:        25 bar

Temperature range*:                   -40ºC ÷ 200ºC

Body materials:                            GGG40/ Al. Bronze/ AISI 316/ GSC-25/Duplex/Other*

Disc materials:                             Al. Bronze/ AISI 316/ Duplex/ Hastelloy/Other*

Seat:                                            PTFE/Other*


*Details on specification can be found in the PDF documentation, other requirements can be offered on request.


International standards

Replacable seat in the valve body, face to face dimensions according international standards

WVTB-ISOLEX Double eccentric wafer type pdf

Technical information

Installation and maintenance instruction

INSTALLATION Installation and maintenance instruction pdf
INSTRUCTIONS KV and CV values double ecentric pdf