主要特性:閥瓣繞體腔內(nèi)固定軸作旋轉(zhuǎn)運(yùn)動(dòng)的止回閥。 Eneral Features:The check-valve which valve clack rotates about a fixed axis in the cavity. 設(shè)計(jì)、制造標(biāo)準(zhǔn)按 Design & Manufacturing According to :GB 12236、API594 通徑范圍 Size range: 1/ 2``-8`` 連接形式 End connection:法蘭端檢驗(yàn)標(biāo)準(zhǔn) Test standard:GB/T13927、API598 壓力等級(jí) Pressure rating:PN16-40 ANSI:150lb、300lb