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.