Double-seat technology

SAFETY QUICK-CLOSING
BUTTERFLY FLAP VALVE
TYPE PKIII/D

Being part of the proven KÜHME high-performance valve series for industrial applications, the PKIII type is used in any application where safe and quick shut-off of gaseous media is required. The electro-pneumatically controlled quick-closing butterfly flap valve sets standards for tightness, service life and reliability even in the most demanding applications. The butterfly flap valve is mainly used as a tight shut-off device for gaseous media in systems with low pressures.

Nominal size:
DN 300 TO DN 3000
Operating pressure:
MAX. 2,5 BAR G
Operating temperature:
max. + 300°C

YOUR BENEFITS

  • Reliable Closing time < 3 seconds
  • Safety guaranteed by the proven sealing system with soft seal (leakage rate A in acc. with EN 12266-1)
  • Closing of the valve is dampened to reduce pressure surges in the pipeline
  • Double seat – one valve instead of two separate valves – compact and cost-efficient solution
  • Convenient insitu automatic testing of the sealing system during plant operation – without having to dismantle the valve
  • Heavy duty design for high amount of operating cycles
  • High-performance valve with a long service life

OPERATION DETAILS

The quick-closing flap is operated by a pneumatic actuator with a solenoid control valve. Automatic quick-closing relieves the pressure volume in the pneumatic actuator via the quick-exhaust valve. The flap closes by means of the stored energy of the closing springs. As the result of the lever kinematics the flap blade moves parallel – and thus nearly without any friction – into the sealing seat.

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