法蘭高壓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動。閥桿的運動形式,有升降桿式(閥桿升降,手輪不升降),也有升降旋轉桿式(手輪與閥桿一起旋轉升降,螺母設在閥體上)。截止閥只適用于全開和全關,不允許作調節和節流。
法蘭高壓截止閥執行標準 Administer Standard
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設計與制造 Design and
Manufacture
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結構長度
Face To Face
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法蘭尺寸
Flange Dimension
|
壓力-溫度 Pressure
Temperature Lating
|
試驗-檢驗 Inspection And
Test
|
|
GB122235
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GB12221
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GB9113 JB79
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GB9131
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GB/T13927
JB/T9092
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法蘭高壓截止閥壓力試驗 Pressure Test
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公稱壓力NominalPressure
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1.6
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2.5
|
4.0
|
6.4
|
10.0
|
16.0
|
|
強度試驗 Shell
Test
|
2.4
|
3.8
|
6.0
|
9.6
|
15.0
|
24.0
|
|
水密封試驗 Water Seal
Test
|
1.8
|
2.8
|
4.4
|
7.0
|
11.0
|
18.0
|
|
上密封試驗Backseat
Test
|
1.8
|
2.8
|
4.4
|
7.0
|
11.0
|
18.0
|
|
氣密封試驗 Air Seal
Test
|
0.5-0.7
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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
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適用介質Suitable
Medium
|
|
|
WCB
|
2Cr13
|
13Cr
STL
木體材料
With Body
Material
尼龍
Nylon
|
增強柔性石墨
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
|