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Valve Material Working Pressure Temperature Range

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1. The relationship between working temperature and allowable medium pressure
Material
Nominal pressure MPa
Medium working temperature ℃














HT200
0.6
0.6
0.49
0.44
0.35
1.6
1.6
1.27
1.09
0.98
ZG230-450
1.6
1.6
1.4
1.25
1.1
1.0
0.9
0.7
4.0
4.0
3.7
3.3
3.0
2.8
2.3
1.8
6.4
6.4
5.9
5.2
4.7
4.1
3.7
2.9
ZG1Cr18Ni9Ti

ZG1Cr18Ni12Mo2Ti

0.6
0.6
0.56
0.5

0.45
0.4
0.36
0.32
0.28
0.25
1.6
1.6
1.4
1.25
1.1
1.0
0.9
0.8
0.7
0.64
4.0
4.0
3.6
3.2
2.8
2.5
2.2
2.0
1.8
1.6
6.4
6.4
5.6
5.0
4.5
4.0
3.6
3.2
2.8
2.5
2. The operating temperature range of the main parts and materials
Material
Temperature range ℃
Remark
HT200
-20~200
QT400-18
QT400-15
-30~350
ZG230-450
-40~450
ZG1Cr18Ni9Ti
ZGOCr18Ni12Mo2Ti
-250~550
2Cr13
-20~450
1Cr18Ni9
-196~550
0Cr18Ni12Mo2Ti
-196~600
PTFE
-40~200
carbon fiber
-120~350
Flexible graphite
-200~600
5860 rubber clip 480D551 nylon canvas
-40~80
Note: This table shows the limit service temperature of various materials. In actual selection, the lower and higher service temperature of the material should be determined according to the medium temperature range of the product. The lower operating temperature shall not be lower than the lower limit of the medium temperature range, and the higher operating temperature shall not be higher than the upper limit of the medium temperature range.

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