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 Butterfly valve |
Metal hard seal Butterfly valve
Main performance parameters
Nominal pressure |
0.25 |
0.60 |
1.0 |
1.6 |
2.5 |
MPa |
Shell test pressure |
0.38 |
0.90 |
1.5 |
2.4 |
3.8 |
Seal test pressure |
0.28 |
0.70 |
1.1 |
1.8 |
2.8 |
Suitable temperature |
≤80℃, ≤420℃ |
Leakage rate |
3DNmm3/s |
≤500℃ |
30DNmm3/s |
Suitable medium |
hot air, gas, Combustible gas, etc |
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Executive standards
1, Connection size of Flange: GB9115
2, Structure length: GB12221
3, Inspection and test: GB/T13927
The materials of major parts :
Name of of parts |
Materials |
valve body, Butterfly plate |
≤300℃ |
Carbon steel |
≤420℃ |
Boiler plate |
≤500℃ |
heat resisting stainless steel |
seal ring |
high performed elastic sheet metal |
valve seat |
Stainless steel, Stellite |
packing |
Flexible graphite, etc |
Structure diagram
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