Butterfly Valves         

Design:

Butterfly ValvesButterfly Valves are designed to be operated with differential pressure over the valve and while there is process flow in the line, and it might be used as a rough control Valve.

Butterfly Valves are 90 deg (quarter turn) operated valves.

  • Operation: By a quarter turn rotating of a disc placed in the center of the Butterfly Valve it is either fully open or fully closed. You will of cause not achieve full bore with a Butterfly Valve.
  • The most common Butterfly Valve is the rubber lined valve with wafer connection.
  • This type of Butterfly Valve is a weight and space saving valve who allows on/off process control.
  • To avoid erosion a Butterfly Valve should always be operated either fully open or fully closed.
  • Any other position will over time cause damage on the disc. By checking a disconneceted disc you can easily see if the Butterfly Valve has been partly open/closed.

Options:

Butterfly Valves are supplied with three different connections.

• Wafer type Butterfly Valve.

• Laug type Butterfly Valve.

• Flange type Butterfly Valve.

NB: Independent of end connection the Butterfly Valve will keep the same operation features as any similar Butterfly Valve.

 

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