Special spiral groove structure, the butterflies in the open when the board deviated from the valve seat after the first rotation, was closed after the first Commissioner of pressure are sealed in place to eliminate the butterfly plate friction, hoist easy, reliable seal.
主要技術(shù)參數(shù)/Main technology parameter
設(shè)計(jì)和制造 Design and manufacture standard
JB/T8527
結(jié)構(gòu)長(zhǎng)度 Face to face dimension standard
GB12221 GB15188
法蘭連接尺寸 Range ends dimension standard
JB/T79.1 — 94 JB/T79.4—94JB/T82.1 — 94
質(zhì)量保證 Quality assurance
IS09001-2000
溫壓等級(jí) Material pressure-temp standard
GB/T9131 HGJ67 JB/T74
試驗(yàn)和檢驗(yàn) Inspection and test standard
G B/T13927
公稱通徑 Nominal diameter
DN50-DN1800
公稱壓力(MPa) Nominal pressure
0.6MPa~4.0MPa 150Lb~300Lb
試驗(yàn)壓力 Ps(MPa) Test pressure
殼體試驗(yàn) The shell testing
1.5XPN
水密封 Water Seal(Mpa)
1.1XPN
氣密封試驗(yàn)Gas seal test
0.6
適用溫度 Appropriate temperature
-1961 -6001
適用介質(zhì) Appropriate medium
分別為水、蒸汽、氣體、油品、硝酸類、醋酸類、、尿素等腐蝕性介質(zhì) For water, steam, gas, oil, nitrate categories, like acetic acid, urea and other aggressive media