- DESIGN STANDARD: DIN/AWWA
- SIZE: DN200~ DN4000
- PTRESSURE: PN6 / PN10 / PN16 / PN25 / PN40
- TEMP: ≤80℃
- MEDIUM: fresh water, sea water, sand water, oil etc.
- BODY STRUCTURE: three eccentric metal sealing or double eccentric rubber sealing
- Materials: Body: Carbon Steel /Grey Cast Iron/Ductile Iron
Disc: Carbon Steel /Grey Cast Iron/Ductile Iron
SEAT: EPDM / SS
- Open/close parameters
| DN | <1000 | >=1000 | |
| Valve open time | 10~60s | 20~120s | |
| Valve close time | Rapid closed | 1.5~15s | 2.5~30s |
| Slow closed | 2.5~60s | 6~90s | |
| Valve close degree | Quick closed | 75°±10° | 75°±10° |
| Slow closed | 15°±10° | 15°±10° | |
Note: Special requirement is available under request.
Also named dashpot function hydraulic butterfly valve with hammer(slow closing)
The butterfly valve are common used in hydro power plant and dams. The valve acts both protection and maintenance role for turbine ,penstock, upstream discharge, intake of water tower etc.
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Penstock Protection:
the valve takes safety and maintenance role for the penstock. Usually in large diameters.
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Turbine inlet Protection:
the valve takes safety and maintenance role for the turbine. Usually the valves features high water pressures.
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Water Discharge Line:
the valve acts as both a safety and maintenance device for the upstream discharge.
Features:
- Small flow co-efficiency
- Automatic
- Energy saving
