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The Wafer Type Concentric Butterfly Valve is applicable for regulating or cutting off medium in pipeline.
Suitable for manual handle operation (DN50~300) as well as worm-gear, electric and pneumatic operation.
The design and manufacture complies with API 609 standard.
Pressure test is in accordance to API 598 standard.
The structure length is in accordance to API 609.
Side flange standard is in accordance to GB/T17241 PN1.0MPa, PN1.6MPa and ASME B16.1 125PSI.

Driving Mode: Lever, Gear Operator, Electric or Pneumatic Actuators.
Fluid Medium: Water, Oil, Gas and various corrosive media
Using Temperature: -10ºC ~ 120ºC
Pressure: PN1.0 ~ 1.6MPa
Size Range: DN50 ~ DN1200
Connection Mode: Wafer
Connection Standard: GB·ANSI·DIN·API·ISO·BS

Bushing: Reduced riving torque, support stem, and effectively separate it with valve body, reduce wear of stem.

Surface of disc axle hole: Through treatment of polishing, precisely fit with seat.

High precision disc external profile: Reach the requirement of bubble-tight, small start and stop torque, longer usage life of seat.Stem seal: Stem is not easy to be distorted, eliminating possible leakage in stem.

Strong precision key: Possible operational options such as manual lever or actuator.

Precision taper pin: Ensure positive vibration proof. Stem to disc connection.

Easily field replaceable.Integral stem design: Ensures dependable and positive disc control.

Side seal: With no need of flange gasket.

Backed seat: Non-collapsible, stretch-resistant and leakage proof. Easily field replaceable.