double flange double offset butterfly valve 1. Technical Date Size: DN100-DN3000 Nominal Pressure: PN10/PN16 Operation Temperature: -10°C~150°C Suitable Medium: Water,Sewage,Seawater,Gas,Food,Oils,etc. 2. Standard Design Standard: GB/T 12238-2008 Structural Length: GB/T 12221-2005 Top Flange dimensions: ISO5211 Face to face dimensions: GB9112,DIN2501,BS4504,ISO2084,ANSI125 Type of connection: Flange Type 3. Feature This valve is mainly composed of body, butterfly plate, valve shaft, seal ring and transmission devices.Reasonable design, compact structure, easy installation and easy to maintenance. Using eccentric structure, reduce friction of sealing ring. Extend the service life of the valve. The disc sealing ring adopt the "T" shape structure, seal hand deliver linear seal, the seal performance is high, can achieve 100% zero leakage. And this valve maintenance is convenient, when the valve plate seal rubber aging or damaged, can change the disc sealing ring directly, the replacement cost is extremely low, for the better economic benefit. The material can be applied to a variety of medium and different temperature. 4. Sealability Use the disc sealing ring structure, sealing ring is linear sealing, completely sealed, zero leakage. The valve shaft drive the butterfly plate, butterfly plate do 90 degrees rotation. Butterfly plate flexible for opening and closing, no card acerbity, beating phenomenon. Stem and disc connection: the pass shaft have pin connection, eccentric structure. Photos
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