Quick Opening Closure

KASRAVAND is a world leader in the manufacture of quick opening closures and hundreds of our QOC closures are in operation throughout the world.

Quick opening closures are pressure retaining structures designed to provide access to pipelines and pressure vessels.

Our QOC closures provide safe and quick access to pipeline and pressure vessels. They are built to meet all required international design codes and can be used in horizontal, vertical, inclined or declined applications.

Approved Design

  • ASME VIII Div.1
  • ASME VIII Div. 2
  • PD5500


  • Rapid Opening Closure
  • Double Bolt Closure
  • Swing-Bolt Closure 
  • CAMLOCK Bolt Closure
  • Threaded Closure