Parameters:

  • Diameters D = 1000mm…8000mm
  • Heads H = 45m…200m

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

BBV butterfly valve features:

  • 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
  • electrical interlock to prevent the disk rotation until the locking member is open
BBV butterfly valve with counterweight driving mechanism for closing and servomotor for opening (servomotor is attached to the valve body)

BBV butterfly valve with counterweight driving mechanism for closing and servomotor for opening (servomotor is attached to the valve body)

BBV butterfly valve with counterweight driving mechanism for closing and servomotor for opening (servomotor is to be installed on the foundation)

BBV butterfly valve with counterweight driving mechanism for closing and servomotor for opening (servomotor is to be installed on the foundation)

Scope of equipment required to install the BBV butterfly valve at HPP

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