Parameters:

  • Diameters D = 3000mm…6000mm
  • Heads H = 40m…150m

Possible drive types:
  • - counterweight for closing, servomoror for opening
  • - servomotor for opening and closing
№ Designation Material
1 Body Carbon steel
2 Disk Carbon steel
3 Disk seal NBR
4 Hold-down segment Stainless steel
5 Ring collar Stainless steel
6 Trunnions Stainless steel / Carbon steel with stainless surface built up by welding
7 Bearings DEVA, self-lubricating
8 Bearing seal Polyurethane / NBR

Features of BBV butterfly valve for penstocks:

  • capability of the valve emergency closing in the stream of water at maximum flow rate
  • low head loss coefficient
  • disk with double eccentric
  • special disk-seal profile
  • two rows of seals in the trunnion bearings
  • manually driven locking member for fixing the disk (to perform operations in a safe manner under the protection of the valve)
  • limit switches for the valve closed and open positions
BBV butterfly valve for a penstock with counterweight driving mechanism for closing and servomotors for opening

BBV butterfly valve for a penstock with counterweight driving mechanism for closing and servomotors for opening

Scope of equipment required to install the BBV butterfly valve in a penstock

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