Butterfly Valve
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The valve body and valve plate of HG8601 series butterfly valve are both manufactured using steel plate through welding technique. Thus, the steel valve comes with advantages such as compact structure, small size, light weight, small friction resistance, small return difference, etc.
The butterfly valve can be fitted with either pneumatic or electric actuator to meet individual demands. It is ideal for applications where requires large caliber, large flow, low differential pressure and low requirement on leakage rate. For occasions with high requirement on leakage rate, please choose our actuated butterfly valves with flexible seal.
Main Technical Specifications| Nominal diameter (mm) | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | |
| Flow coefficient Kv | 90 ° | 275 | 480 | 770 | 1100 | 1970 | 3000 | 4460 | 5840 | 7720 | 9440 | 12000 |
| 60 ° | 136 | 239 | 365 | 525 | 890 | 1460 | 2130 | 2830 | 3730 | 4270 | 5840 | |
| Nominal diameter (mm) | 600 | 700 | 800 | 900 | 1000 | 1200 | 1300 | 1500 | 1600 | 1800 | 2000 | |
| Flow coefficient Kv | 90 ° | 1760 | 24000 | 31200 | 39400 | 48900 | 69500 | 81500 | 107300 | 126000 | 159000 | 197200 |
| 60 ° | 8410 | 12000 | 14800 | 19700 | 23200 | 33900 | 39500 | 52300 | 61100 | 77200 | 95600 | |
| Rated stroke | Flow regulation applications: 70°; two position control applications: 90° | |||||||||||
| Flow characteristic | Approximate to equal percent | |||||||||||
| Nominal pressure | 0.6, 1.0, 1.6 MPa | |||||||||||
| Adjustement range | 70° 12:1; 90° 30:1 | |||||||||||
| Action form | Pneumatic or electric | |||||||||||
| Flange | HG20592-2009, ANSI, JIS, DIN, etc. | |||||||||||
| Valve body material | Cast steel, stainless steel (SS304, SS316, SS316L) | ||||||
| Valve plate material | Stainless steel (SS304, SS316, SS316L) | ||||||
| Stuffing material | Teflon, flexible graphite | ||||||
| Sealing form | Flexible seal | Rigid seal | |||||
| Sealing material | Nitrile rubber | Fluororubber | Teflon | Teflon reinforced by carbon fiber | Stainless steel or stainless steel stellite alloys | ||
| Leakage rate | Class VI < 10-4 rated flow | < 2% rated flow | |||||
| Working temperature | Cast steel valve body | -5 ~ 80 ℃ | -5 ~ 200 ℃ | -5 ~ 200 ℃ | -5 ~ 220 ℃ | -5 ~ 400 ℃ | High temperature resistant alloy: 1000 ℃ |
| Stainless steel valve body | -20 ~ 80 ℃ | -20~ 200 ℃ | -20~ 200 ℃ | -20 ~ 220 ℃ | -20 ~ 600 ℃ | ||
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