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Flange gate valve (Z41H)

Model
Type
Nominal
Nominal
Pressure
Test pressure
Test Pressure
Operating Temperature (℃) Working
Temperature
Suitable for medium
Medium
Strength (water)
(Mpa)
Sealing (water)
Air (Mpa)
Low pressure seal air (Mpa)
Z41H-16C
1.6
2.4
1.8
0.6
≤ 425
Water, steam,
Oil, etc.
Z41H-25C
2.5
3.8
2.8
0.6
≤ 425
Z41H-40C
4.0
6.0
4.4
0.6
≤ 425
Z41H-64C
6.4
9.6
7.0
0.6
≤ 425

Part name
Body Material Body Material Code
Part Name
Body / bonnet
WCB
ZGCr5Mo
ZG1Cr18Ni9Ti/CF8
ZG1Cr18Ni12Mo2Ti/CF8M
Body / Bonnet
Gate
WCB
ZGCr5Mo
ZG1Cr18Ni9Ti/CF8
ZG1Cr18Ni12Mo2Ti/CF8M
Wedge
Stem
Cr13
25Cr2MoV
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
Stem
Packing
Flexible graphite / Flexible Graphite
Teflon / PTFE
Packing
Gasket
18-8 flexible graphite / 18-8Flexible Graphite
Gasket
Bolt
35/35CrMo
25CrMoV
1Cr18Ni9
1Cr18Ni9
Bolt
Temperature
-29-425 ℃
-29-450 ℃
-40-200 ℃
-40-200 ℃
Suitable Temp.
For media
Water, oil, steam
Water, Oil, Steam
Steam, oil
Steam, Oil
Nitric acid
Nitrc Acid
Acetic acid
Acetic Acid
Suitable Medium

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