FREE-Valve’s Centric Butterfly Valve adopt center Lined principle to design, It uses the flexibility rubber seat, could easily achieve zero leakage and bi-directional sealing, It also can be used as regulation and shut-off device to deal with corrosive, non-corrosive gases, liquids in pipelines .
Features
1. Bi-Directional sealing, throttling Operation and shut-off function.
- Fully rubber lined body, with lined rubber extending up to the flange contact face,Resilient Seat.
- The choice of disc and seat materials to suit working conditions and medium.
- With Self lubricated PTFE lined bearing designing ,life cycles up to ten thousand times cycles .
Technical specifications
1) Size Range：NPS2~NPS64,
2) Pressure Range：PN6~PN16,Class150
3)Body material：Carbon steel, stainless steel,copper alloy
4) Sealing material：Rubber or PTFE
5) Body type：Wafer Body Type, Lug Type or Flange Type
6) Working temperature:≤120°C
7) Operating method：Worm gear,electric,pneumatic .
8) Pressure test:GB/T13927; API598
9) Face to Face: GB/T12221; API609, EN 558
Applicable
FREE-Valve’s Centric Butterfly Valve could easily achieve Bi-Directional sealing, therefore is a widely applied valve in oilfield, agriculture,Power Plant Condensates Waterworks, Water treatment, Seawater, Exhaust,Flue Gas.Because of rubber lined body materials,it is usually used in low pressure lines.
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China [CN] 
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