WSIECO now can process various types of Quick Opening Closure within DN1800mm, and will fully satisfy the seal requirements in the production with the micrometer level in the machining accuracy.


LSM Wheel Paddle Quick Opening Closure

LSM Quick Opening Closure

LSM Wheel Paddle Quick Opening Closure is made up of coaxial double steel plate (the outside plate is the card plate and the inside plate is Quick Opening Closure).

Through the lead screw drive, drive the card plate rotation, use slant produce thrust forward, and push (rotating) Quick Opening Closure forward translation extrusion seal, to achieve the purpose of the seal.

LSM wheel-paddle translational sealing Quick Opening Closure is WSIECO’s exclusive patent product.

  • Safety interlocking
  • Special protecting sealing ring
  • Multisurface structure of lcoking
  • Long lead screw transmission
  • Simple structure


Band Locking Quick Opening Closure

Band Locking Quick Opening Closure

Band Locking Quick Opening Closure is manufactured by high grade quality raw materials, and can be customized according to customers’ specifications.

Band Locking Quick Opening Closure provides quick access to pipeline pig traps. This opening closure was designed to open quickly with out any special tool, normally under a minute.

Band-lock quick opening closures provide horizontal or vertical access to any pressure vessel in seconds. Compared with other quick-opening closures they can be operated safely at remarkable speed — any size of unit can be opened or closed in less than a minute, with no special tools required.

Band Locking QOC Structure

Clamp Type Quick Opening Closure

Clamp Type Quick Opening Closure

Clamp Type Quick Opening Closure gets open or closed through the disengaging or banding of hoop.

This kind of Quick Opening Closure has the features of self-locking, shockproof, prevent loose, and can second relief in the open. It not only prevents the quick opening closure loose in the lock of the process, but also prevents to take pressure situation open the blind plate risk happens.

The three section clip-type realized at the same time action in the lock, force uniform, reduced the open wire rod length, and make the switch become more flexible and reliable.

The structure increase the bite the tooth stress area. It is suitable for high pressure large diameter gas pipeline.



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