Standard:
Design standard conform to: ANSI/AWWA C504
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: BS5155 Short, ISO5752 (Series 13), DIN 3202 F16
Test standard conform to: API598

Design characters:
1. Correcting holes are made on flange according to standard, easy correcting during the installation.
Through-out bolt or one-side bolt used. Easy replacing and maintenance.
Shaft and disc connected by pin, torque screw or non pin, to achieve the opening and closing.
Performance:
Nominal Diameter: DN40-DN1200
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
Suitable medium: fresh water, sea water, gas, oils, acids, alkalis, etc.