4 Offset Butterfly Valve (Co-ax)

We offer a new generation of butterfly valves-Quadax series from M/S Muller Co-ax Ag.

The unique and patented design, a Quadraple (four offset) and a new manufacturing technology meets the highest tightness requirements, even under extreme temperature conditions ranging from -270°C to 800°C.

A patented design resulting in a completely round sealing surface which offers significant edge over triple offset butterfly valves.



High Pressure
bidirectional up to 300 bar(4351psi)


Extreme Temperature
-270 to 800°C


Sizes from 80 mm to 1000m and above

Advantages of 4 offset design:

  • Friction free, Zero Leakage
  • Higher flow co-efficient(Cv) due to round shape
  • Reduced torque requirement
  • Highest tightness requirements even under extreme temperature conditions
  • More number of sealing options available
  • Metallic sealing possible due to Quadraple design
  • Superior cryogenic performance
  • Used as oxygen valves with oxygen as a media, BAM oxygen approval possible

Mounting options:

  • Butt weld Type butterfly valve
  • Lug type butterfly valve
  • Double Flange type butterfly valve
  • Gate valve replacement butterfly valve

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