Anti-sulfur hard sealing butterfly valve
Model:
Nominal diameter: DN mm
Nominal pressure: PN MPa
Main material:
Drive: gas transmission, electric transmission
Design criteria: GB / T12238-1989 JB / T8692-1998
Flange size: GB / T9115.1-2000
Structure length h: GB / T12221-1989
Pressure test: GB / T13927-1992; JB / T9092-1999