The turning center of the butterfly plate is on the centerline of the valve body and the sealing face section of the butterfly plate. In closing, the ex-circle sealing face of the butterfly plate will extrude the valve seat made of synthetic rubber, generating elastic deformation on the seat to form an elastic force used as a sealing specific pressure so as to guarantee the tightness of the butterfly valve.
Nominal Diameter: 2" - 24"
Pressure Range: Class 150 - Class 300
Working Temperature: -46℃-+120℃
Body Material: Carbon steel, Stainless steel, Alloy steel
Operation: Wrench, Worm gear, Electric, Pneumatic, etc
End Connection: RF, RTJ
Leakage Rate: ANSI B 16.104 Ⅵ
Design Standard: API 609, ASME B16.34, GB/T 12238
Soft seat designed.
Good sealing effect and long service life.
Simple structure and small opening/closing torque.
Small installation space, light weight, and maintenance friendly.
Good flow adjusting ability, high precision of flow characteristic curve and good dynamic adjustment stability.