Large Stock PTFE Full Lined Wafer ANSI Standard Butterfly Valve
Design and Manufacture Standard: ASME B16.34, HG/T 3704
Face-to-face Dimension: ASME B16.10 , GB/T 12221
Flange Standard: ASME B 16.5 ,GB/T 9119 ,DIN ,JIS
Inspection and Testing: API 598, GB/T 13927
Body Material: WCB, ASTM A395 , CF8 ,CF8M
Lining Material: PTFE , PFA , PO ,FEP, EPDM
Nominal Diameter: 2"-80"(DN50~DN2000)
Pressure Range: Class150 , PN6 , PN10 , PN16
Connection Type: Flange ,Wafer , Lug Connection
Operation Method: Manual ,Worn gear ,Electric ,Pneumatic actuator
1.The lined butterfly valves bi-directional flow is possible at maxmium operating pressure. Since the valve port corresponds to the piping diameter, a high flow capacity is guaranteed.
2.It features ease of maintenance, repeatable on-off, long life durability.
3.The concentric design is commonly used in the power generation, brewing, water and food industries and suitable for both gaseous and liquid service. Typically applied in chemical/petrochemical process, food and beverage, and pulp and paper etc.
4.Lining material: PTFE, PFA, FEP, GXPO etc.
5.Connection type: wafer, flange, lug etc.
6.Operation methods: manual, worm gear, electric, pneumatic and hydraulic actuator.
7.Youfumi lined three-way ball valves are available as per the needs of applications in additional sizes and other than standard materials.
Belleville disc springs
provide live loading to ensure a tight top seal.
Blow-out proof design
Stem and disc are one simple part combined with the anti-blow-out system. (API 609 compliant.)
The extended body lining
assures optimum protection of the PTFE-rings from corrosive media.These components are located behind the body liner extension. They are
isolated from the media.
The revolutionary PTFE atmosphere seal
protects the top seal components and the shaft from atmospheric corrosion.
Triple PTFE-ring backup-seals
provide a second, third and fourth line of protection against atmospheric leakage.
The in-line resilient seal assembly
assures optimum pressure distribution of the body liner to the disc assembly, providing tight sealing under all operating conditions. The wider seal-
band provides a broader sealing area.
Fully lined bottom shaft
assures optimum corrosion resistance and eliminates a potential leakage path.