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Cowinns Industry Equipment Co.,Ltd
No.127 Room No.748 Changjiang Road,High-Tech District,
Suzhou City, Jiangsu Province, zip:215128 China
Tel:+86 512 6878 1993 
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Pneumatic 8'' 150LB CF8M metal to metal seat triple off set RF connection butterfly valve

Pneumatic 8'' 150LB CF8M metal to metal seat triple off set RF connection butterfly valve

  • Valve type:Butterfly valve
  • Port size:8''
  • Pressure:150LB
  • Material: ASTM A351 CF8M
  • End: RF
  • Operation: Pneumatic operated
  • Application: Water, oil, gas, chemical pipeline
  • Medium : Chemical
  • Working temperature: normal
Product description:
API 609 design standard

Principle of operation:
The Cowinns triple off set butterfly valve provides a bi-directional bubble tight shut-off. This geometry ensures that the disc seal contacts the body seat only at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient "wedging" to ensure a uniform seal contact.

The triple off set geometry
Offset 1:The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat.
Offset 2:The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve.
Offset 3: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.

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