The use of a weld-in style flange isolation joint eliminates the “jig-saw-puzzle” installation of gasket isolation kits and allows for a tested and ready-to-install, finished product. The Barlow Flanged Isolation Joint interrupts the flow of electrical current along the pipe, utilizing dielectric materials in the joint design. The Barlow Flanged Isolation Joint exhibits high dielectric and physical strength for a long term, robust and reliable solution.
Pipeline isolation is used to electrically “split-up” pipelines into distinctive segments. This isolation of pipelines is essential to ensure that cathodic protection (impressed current) is applied and controlled, to prevent “long line” currents and to make the individual cathodic protection systems more effective and economic. Isolation also facilitates prevention of stray electric currents, decreasing corrosion. Isolation of pipelines can provide protection against earthing currents. Isolation of the pipeline can also be used where dissimilar metals are found together to help prevent the galvanic action between the metals. Importantly, isolation can also be used at custody transfer points in pipelines to ensure that two different pipelines, and their corrosion systems do not adversely affect one another.
The Barlow flanged isolation joint is a long-term, reliable, robust and cost-effective solution for pipeline isolation. The Barlow flanged isolation joints is assembled and tested in a clean factory setting. This allows for easy installation (weld into place). The advantage of Barlow isolation joints are multi-faceted including but not limited to:
The Barlow flanged isolation joint is a highly engineered product, and is manufactured in a clean environment to provide a long term solution. The design has been perfected over 60 years to cultivate a superior product. Special features include:
Each joint is provided with a certificate of dielectric and electric testing. Other tests can be defined by user and witnessed by third party if required. Barlow Flanged isolation joints can be provided with testing data and material test reports (MTRs) upon request.