Parameters:

  • Diameters D =200mm…400mm
  • Heads H = 200m…1000m
  • Oil pressure Р = 4MPa…16MPa
№ Designation Material
1 Body Carbon steel
2 Needle Stainless steel
3 Valve seat Stainless steel
4 Servomotor component parts Carbon steel

Fuatures of the valve with hydraulic drive of needle type:

  • shutting-off device - needle
  • metal-to-metal seal
  • limit switches for closed and open positions of the valve with hydraulic drive
  • double-acting servomotor (for opening and closing)
  • servomotor working fluid - turbine oil
  • in closed position the needle is additionally under water pressure, which ensures leak-tightness in case of the oil pressure drop in the control system
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