PRODUCT NAME:TURBINE INLET VALVES / PENSTOCK PROTECTION VALVES
These specialized Butterfly valves are installed to protect hydro-electric power stations in turbine run away condition. Valves are designed to close against turbine runaway during an emergency condition. These valves act as isolating devices for inspection of penstock without dewatering the entire head race tunnel. These valves close during over velocity condition occurring due to turbine trip or runaway condition. Further, these special design Butterfly Valves can also be used for turbine inlet application instead of Spherical Valves.
FEATURES OF TURBINE INLET VALVE / PENSTOCK PROTECTION VALVES:
► Bypass valve required will be provided.
► Companion flanges, Dismantling joints, Flange adapter as required will be provided as optional.
► Air release valve, Proximity switches will be provided as optional.
► OPU (Oil Pumping Unit) can be supplied on request when valves are not operated by Turbine governor oil pressure.
| TECHNICAL SPECIFICATION | |
| Manufacturing & Testing Standard | BS 5155 (BS EN 593)/ IS 13095 |
| End Connections | Double flanged (short/long), Flanges drilled to IS/BS/ANSI/DN as per customer requirement |
| Size Range | Flanged : 500 mm to 3000 mm |
| Pressure Ratings | BS 5155 (BS EN 593) /IS 13095 – PN6, PN10, PN16, PN20 & PN25 |
| Power operations | Hydraulic |
| Seal | B-type |
| MATERIAL OF CONSTRUCTION | |
| Component | Material of construction |
| Body/ Disc | Fabricated carbon steel (IS 2062 Gr. B) / Cast carbon steel ASTMA 216 Gr. WCB / SG Iron – IS 1865 Gr. 500/7, 400/12, |
| Shaft | Stainless Steel (BS970 /431 S29), AISI 410 |
| Seat/Clamping ring | Stainless Steel (ASTM A 479 TYPE 304 /A351 TYPE CF8) |
| Bearing | Stainless Steel backed PTFE |
| Seal | Nitrile rubber, EPDM |
