Ordinary Temperature
Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
Unidirection
Industrial Usage, Water Industrial Usage, Household Usage
Dual Plate&Double Disc Lug Stainless Steel Swing
BS1868, API 6D, ASME B16.34
ASME B16.34
ASME B16.10
ASME B16.25, ASME B16.5/16.47
Dnv CE 0575
ISO 9001: 2008
Sea Worthy
API, ANSI, ASME, DIN, JIS, GB etc.