MAIN FEATURES: 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. Design Features Design standard as per: API 609, ASME B16.34, GB/T 12238. Small installation space, light weight, and maintenance friendly. Good sealing effect and long service life. Simple structure and small opening/closing torque. Good flow adjusting ability, high precision of flow characteristic curve and good dynamic adjustment stability. Soft seat designed. Product Range Body material: carbon steel, stainless steel, alloy steel Nominal diameter: 2"¡«24"£¨DN50~DN600£© Pressure range: Class150¡«300£¨PN10~PN50£© End connection: RF, RTJ Working temperature:-46¡æ¡«+120¡æ Operation: Wrench, worm gear, electric, pneumatic, etc. 
Leakage rate: ANSI B 16.104 ¢ö.
