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Butterfly Valve Standard:
Design standard conform to: MSS SP**7, API**9, EN**3
Connection flange conform to: DIN PN*0/*6/*5, ANSI B*6.1, BS***4, ISO PN*0/*6,
JIS B***2/***3, BS *0 Table D, BS *0 Table E
Top flange conform to: ISO ***1
Face to face conform to: API**9, ISO***2 series *0, BS***5
Test standard conform to: API**8

Design characters:
This corrosion resistant butterfly valve is a separated style with the PTFE liner ring inside.This  butterfly valve can be fit for various corrosive and dangerous medium. Between the liner ring and the valve is the back liner which is made of high-elasticity rubber. The liner ring disc of butterfly valve adopts the double spherical surface sealing structure which is used to guarantee the reliable closing and sealing performance. With the ascendant design, butterfly valve will be safety and no leakage during the long-term use.

 

Performance:
 Nominal Diameter: DN**-DN**0 

Testing pressure (water) Ps (MPa)
      Body seat: 1.5 times rated pressure
       Seat test:  1.1 times rated pressure