Screw end butterfly valve

详情

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
Suitable Mediums: Oil, gas, water, sewage

Design characters:
O-ring seated in disc and easy to be replaced.
Choice of O-ring elastomers for different operating temperatures and environments.
Standard cast iron nickel plated body.
Aluminum bronze or nickel plated ductile iron disc options.
Large diameter shaft on all size provides superior strength.
Maximum disc diameter for each valve size which has a greater free-flow area than the others.
Open and close locking handle with more dependable locking capabilities.

Performance:
 Nominal Diameter: DN**-DN**0
                Nominal Pressure PN (MPa):
  1.0, 1.6, 2.0, 2.5
Testing pressure (water) Ps (MPa)
      Body seat: 1.5 times rated pressure
      Seat test:  1.1 times rated pressure