HPE > Mining Solutions > High Pressure Valves > Turbine Control Valve

Turbine Control Valve

To achieve rapid closure followed by slow shut off on turbine nozzle pipelines. This minimizes pressure surges (i.e. water hammer) and prevents pelton wheel turbines from over speeding in the event of electrical load loss.



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Category:
Description Unit
Solenoid voltage 24 VAC (other voltages may be specified)
Face to face dimensions Refer to valve dimensions and schematics
Pre-opening 6 mm (max 8 mm; min 5 mm)
Body design Straight or Angle pattern
Pressure Rating (max) 250 bar working pressure
Design specification ANSI B16.34
Valve configuration Globe type - taper poppet & seat
 
Size 200NB 250NB 300NB
Maximum working flow @ 180 bar 113 ℓ/sec 177 ℓ/sec 255 ℓ/sec
Closing trip flow (nominal) 35% above working flow rate
First stage closing time 0.3 sec 0.35 sec 0.55 sec
Final closing time * 6 sec 8 sec 10 sec
*Can be altered to suit customer specifications

  • A single low voltage electric ‘on’ signal will open the valve
  • Removal of the signal through whatever cause will result in immediate and controlled closure of the valve
  • Adjustable valve opening speed
  • Stainless steel and bronze internals with UHMWPE seals
  • Cast steel body (galvanised body optional)
  • High cavitation resistance due to poppet and cage design
  • Can be maintained in line
  • Low pressure drop across valve
  • High sealing integrity and dirt tolerance
  • Flanges and face dimensions to suit customer specifications

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