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Swing type

  • Swing type

The pipeline is blocked by putting the line blind into open/close position. By moving the handwheel a single operator can open or close the pipeline. A product line includes models from DN 20 (NPS ½) TO DN 800 (NPS 32) to 1500 pounds (ASME class) for gas, liquids, heavy liquids, drilling fluid, powder, drilling slurry, etc.

  • No pipeline load

Compression/expansion of the pipeline while exploitation is excluded

  • Automatic positioning of the line blind

The line blind will be safely installed to its place by using automatic positioner

  • Rotational torque meter of the handwheel

Regulates the accuracy of handwheel action in rotation for opening or closing of a line blind

  • Double safety locking

Two safety locking mechanisms are installed to guarantee the accuracy of actions. One of them may be locked by a key

  • Self stick free mechanism of a blind

A unique gearing mechanism will release the jammed line blind

  • Double sealing (optionally)

In dependence to operation environment and working conditions for safety increase two extra seal rings may be installed

  • The open/close position sensor (optionally)

The line blind position sensor may be installed

Operating sequence


  1. Unlock the key and clamp lever
  2. Turn the handwheel counter clockwise
  3. Push the disk to switch the position of a line blind.
  4. Turn the handwheel clockwise for total air-tightness.
  5. Lock the key and clamp lever.

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