Standard:
Design standard conform to: MSS SP-67, API609, EN593
Connection flange conform to: DIN PN10/16/25, ANSI B16.1, BS4504, ISO PN10/16,
JIS B2212/2213, BS 10 Table D, BS 10 Table E
Top flange conform to: ISO 5211
Face to face conform to: API609, ISO5752 series 20, BS5155
Test standard conform to: API598
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: DN50-DN150
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