Keterangan
Penstock Protection / Turbine Inlet Butterfly Valve
These specialized Butterfly valves are installed to protect hydro-electric installations against the possibility of penstock rupture. Valves are designed to close against turbine runaway during an emergency condition. These valves act as isolating devices for inspection of penstock without dewatering entire head race tunnel. Yet another important application is for large water supply schemes fed from reservoirs through long pipelines, failure of which can cause disastrous floods. Valves, by virtue of their design and robust construction, close down automatically and instantaneously in the event of the downstream pipeline failure. 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.
Cross Section of Lattice Blade Penstock Protection Valve
For Detailed Specifications and Dimensions
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Material of Construction
SL.NO. DESCRIPTION MATERIAL USED
a BODY FABRICATED CARBON STEEL ( IS 2062 Gr.B)
b DISC FABRICATED CARBON STEEL ( IS 2062 Gr.B)
c SHAFT ST. STEEL( BS970 431 S29)
d SEAT/ CLAMPING RING ST. STEEL ( ASTM A 479 TYPE 304/ A351 TYPE CF8)
e BEARING ST.STEEL BACKED PTFE
f SEAL NITRILE RUBBER
3100 mm Size
Valve under Hydro test 3700 mm Size
2200 mm Size - MALANA HEP - INDIA
3000 mm Size - ESTI HEP, PANAMA
Trio of Key Installations
Fouress has designed, manufactured and supplied the following penstock protection valves which are three of our prime supplies in India and abroad.
4000mm size – Turbine inlet valve with gantry crane and other accessories for Tamilnadu Electricity Board for their Servalar Hydro-electric Project.
3100mm size – Penstock protection valve supplied to Australia for installation at Wyangala Dam Hydro-electric Project in New South Wales – the largest valve ever exported from India.
3700mm size – Penstock protection valve designed for 30kg/ cm2 and tested for pressure of 45kg/ cm2. This valve is for a Pump storage scheme suitable for flow in both directions. In view of the open penstock configuration, the maximum flow for closure is almost seven times the normal flow. The valve is being supplied to Bhira pump storage scheme of Tata Electric Company.
2200 mm Size Penstock Protection Valve designed for 30 Kg/ cm2 supplied to MALANA hydro power plant in Himachal Pradesh.
3000 mm Size Turbine Inlet Valves supplied to ESTI Hydro power plant , PANAMA through GE ENERGY UK.
4000 mm Turbine Inlet valve supplied to BOVING Fouress Ltd for a Hydro project in Karanataka
3000 mm Penstock Protection valves supplied to MANERIBALI Hydro power project in Uttaranchal
10 Meter Butterfly Valve supplied by Boving
3700 mm Size
3700 mm Size
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