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8'' 1500LB 904L  metal to metal seated triple offset butterfly valve wafer end butterfly valve with worm gear operation

8'' 1500LB 904L metal to metal seated triple offset butterfly valve wafer end butterfly valve with worm gear operation

  • Valve type: Butterfly valve
  • Port size:8''
  • Pressure:1500LB
  • Material: 904L
  • End: Wafer
  • Operation: worm gear
  • Application: fossil power plant
  • Medium : Steam
  • Working temperature: 550℃

Cowinns triple offset high pressure and high temperature metal to metal seat butterfly valve can be used in petrochemical plants, fossil power plants, LNG, pulp and paper, unclear power plants and petroleum refining.

Design standard according to API609

Body material:904LB



Wafer end

Metal to metal seat



Metal to metal seated and triple offset quarter-turn design

Bi-directional tight shutoff

Zero leakage

Design with fire safety and can be offered fire test


Mediums: Process fluids, hydrocarbons, Steam or Geothermal steam, hot gas or sour gas etc.

Temperature limits: From -196°C (-320°F) up to +818°C (+1600°F).


Instruction for triple offset structure:

1.Offset one :The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat.

2.Offet two :The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve

3.Offset three :The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.


Triple offset butterfly valve body structure drawing

triple offset butterfly valve structure.jpg

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