For two new built ferries the Göpfert AG provided 92 pcs. of these butterfly valves in the size DN 50 up to DN 200:

Butterfly valves lug-type PN16
• back seated
• working pressure 10 bar
• with single acting hydraulic
  actuator, spring closed
• with electro-hydraulic local
  pressure unit (LPU)
• with quick coupling for emergency
  hand pump
• with 2 limit switches in protected
  body IP67
• with optical position indicator
• Material: GGG 40 / AlBz / 1.4057

Our butterfly valves are designed for assembly between flanges acc. to DIN, ANSI or JIS. They are absolutely tight with flow in both directions and needs only a few space for mounting in a pipe line.

Our butterfly valves are designed for use up to 10 resp. 16 bar, our high performance butterfly valves up to 25 bar and they are available as cast iron valves, nodular cast iron valves, cast steel valves, bronze valves and aluminium bronze valves with discs material stainless steel or bronze for pipes from DN 40 up to DN 600.

You can order our butterfly valves in the following designs:
• as wafer type or lug type butterfly valves with replaceable liner
   vulcanised to a back ring
• as double flanged type butterfly valves with seat vulcanised to
   the body
• as high performance butterfly valves with sealing ring, double
   eccentric
• with lever
• with lever and locking device
• with vertical or horizontal gear box
• with bare shaft
• with indicator
• with optical indicator
• with limit switches
• metal/metal sealing / fire-safe
• "pin-less" design

Furthermore our butterfly valves are available with following actuators for remote operation:
• pneumatic actuators double acting or spring return
• hydraulic actuators incl. hand pump station for remote control
• electric actuators