Features: Bi-Directional Seal Butterfly Valve The Valve has bi-directional sealing performance, which is suitable for normalflow and contraflow working condition.  The valve can be installed in any direction without the restriction of medium's flow way. 1.Material: WCB, LCB, Stainless steel etc. 2.Size:NPS2"--48"(DN50---1200mm) 3.Pressure: PN16 4.Design standard: according to ANSI, DIN, JIS etc 5.Operation:Electric, pneumatic, hydraulic actuator and worm wheel Welcome the advice Bi-Directional Seal Butterfly Valve Inner packing: Plastic package Outer packing: Wooden package We welcome from all over the world, we can put the consultation goods sent to anywhere in the world