點(diǎn)擊圖片查看原圖
截止閥的啟閉件是塞形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運(yùn)動(dòng)。閥桿的運(yùn)動(dòng)形式，有升降桿式（閥桿升降，手輪不升降），也有升降旋轉(zhuǎn)桿式（手輪與閥桿一起旋轉(zhuǎn)升降，螺母設(shè)在閥體上）。截止閥只適用于全開和全關(guān)，不允許作調(diào)節(jié)和節(jié)流。
執(zhí)行標(biāo)準(zhǔn) Administer Standard
|
設(shè)計(jì)與制造 Design and Manufacture
|
結(jié)構(gòu)長(zhǎng)度
Face To Face |
法蘭尺寸
Flange Dimension |
壓力-溫度 Pressure Temperature Lating
|
試驗(yàn)-檢驗(yàn) Inspection And Test
|
|
GB122235
|
GB12221
|
GB9113 JB79
|
GB9131
|
GB/T13927 JB/T9092
|
法蘭高壓截止閥 壓力試驗(yàn) Pressure Test
|
公稱壓力NominalPressure
|
1.6
|
2.5
|
4.0
|
6.4
|
10.0
|
16.0
|
|
強(qiáng)度試驗(yàn) Shell Test
|
2.4
|
3.8
|
6.0
|
9.6
|
15.0
|
24.0
|
|
水密封試驗(yàn) Water Seal Test
|
1.8
|
2.8
|
4.4
|
7.0
|
11.0
|
18.0
|
|
上密封試驗(yàn)Backseat Test
|
1.8
|
2.8
|
4.4
|
7.0
|
11.0
|
18.0
|
|
氣密封試驗(yàn) Air Seal Test
|
0.5-0.7
|
|||||
法蘭高壓截止閥 主要零件材料及性能 Main Part Materials and Property
|
體、蓋、板 Body Cover Disc
|
閥桿
Stem |
密封面 Sealing Face
|
墊片
Sealing Shim |
填料
Packing |
工作溫度℃ Working Temperature
|
適用介質(zhì)Suitable Medium
|
|
|
WCB
|
2Cr13
|
13Cr
STL
木體材料
With Body
Material
尼龍
Nylon
|
增強(qiáng)柔性石墨
Enhanced Flexible Graphite
13Cr/柔性石墨
1Cr13/Flexible Graphite
08軟鋼
08 Soft Steal
0Cr18Ni9Ti
0Cr17Ni12Mo2Ti
XD550F(T)
PTFE
|
柔性石墨
增強(qiáng)柔性石墨
Flexible Graphite
Enhanced Flexible Graphite
SFB/260
SFP/260
PTFE
|
≤425
|
水
蒸汽
油品
Water
Steam
Petroleum
Ptoducts
|
|
|
WC1
|
38CrMoAl
25Cr2MoV
|
≤450
|
|||||
|
WC6
|
≤540
|
||||||
|
WC9
|
≤570
|
||||||
|
C5 C12
|
≤540
|
||||||
|
ZGCr5Mo
|
≤200
|
硝酸類Nitric acid
|
|||||
|
ZG1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
||||||
|
≤200
|
醋酸類Acetic acid
|
||||||
|
ZG1Cr18Ni12Mo2Ti
|
1Cr18Ni12Mo2Ti
|