GLOBAL pipeline solutions provider TD Williamson has introduced the ProStopp? DS isolation tool, which the company believes is the first double block and bleed technology for the gas distribution market. Currently available for 6" to 12" pressurised carbon steel pipelines, the ProStopp DS isolation tool achieves a double block and bleed isolation utilising two plugging heads with a bleed port in between. This allows product to bleed through the housing so there is less hardware on the line.
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