法兰高压截止阀的启闭件是塞形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。阀杆的运动形式，有升降杆式(阀杆升降，手轮不升降)，也有升降旋转杆式(手轮与阀杆一起旋转升降，螺母设在阀体上)。截止阀只适用于全开和全关，不允许作调节和节流。
法兰高压截止阀执行标准 Administer Standard
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设计与制造 Design and
Manufacture
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结构长度
Face To Face
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法兰尺寸
Flange Dimension
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压力-温度 Pressure
Temperature Lating
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试验-检验 Inspection And
Test
|
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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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法兰高压截止阀压力试验 Pressure Test
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公称压力NominalPressure
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1.6
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2.5
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4.0
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6.4
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10.0
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16.0
|
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强度试验 Shell
Test
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2.4
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3.8
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6.0
|
9.6
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15.0
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24.0
|
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水密封试验 Water Seal
Test
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1.8
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2.8
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4.4
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7.0
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11.0
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18.0
|
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上密封试验Backseat
Test
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1.8
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2.8
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4.4
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7.0
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11.0
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18.0
|
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气密封试验 Air Seal
Test
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0.5-0.7
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主要零件材料及性能 Main Part Materials and Property
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体、盖、板 Body Cover
Disc
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阀杆
Stem
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密封面 Sealing
Face
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垫片
Sealing Shim
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填料
Packing
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工作温度℃ Working
Temperature
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适用介质Suitable
Medium
|
|
|
WCB
|
2Cr13
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13Cr
STL
木体材料
With Body
Material
尼龙
Nylon
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增强柔性石墨
Enhanced Flexible
Graphite
13Cr/柔性石墨
1Cr13/Flexible
Graphite
08软钢
08 Soft Steal
0Cr18Ni9Ti
0Cr17Ni12Mo2Ti
XD550F(T)
PTFE
|
柔性石墨
增强柔性石墨
Flexible Graphite
Enhanced Flexible
Graphite
SFB/260
SFP/260
PTFE
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≤425
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水
蒸汽
油品
Water
Steam
Petroleum
Ptoducts
|
|
|
WC1
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38CrMoAl
25Cr2MoV
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≤450
|
|
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WC6
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≤540
|
|
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WC9
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≤570
|
|
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C5 C12
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≤540
|
|
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ZGCr5Mo
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≤200
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硝酸类Nitric acid
|
|
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ZG1Cr18Ni9Ti
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1Cr18Ni9Ti
|
|
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≤200
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醋酸类Acetic acid
|
|
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ZG1Cr18Ni12Mo2Ti
|
1Cr18Ni12Mo2Ti
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