Quick Opening Closures

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

Pipeline Engineering is a world leader in the manufacture of quick opening closures and thousands of our ROC closures are in operation throughout the world.

Our ROC 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.states that "Quick-actuating or quick opening closures are those that permit substantially faster access to the contents space of a pressure vessel than would be expected with a standard bolted flange connection." The Pipeline Engineering ROC quick opening closure meets this standard.

The requirements of other pressure vessel codes, such as ASME VIII Div. 2 and PD5500 can be complied with as well as ASME U and U2 code stamps. This code stamping confirms that the Pipeline Engineering quick opening closure has gone through rigorous shop inspection by an ASME Authorized Inspector.

Typical applications for the ROC quick opening closure include

  • Pig launchers and pig receivers
  • Filter vessels
  • Metering skid systems
  • Strainers
  • Separators

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