HTP – High Temperature Line Plugging

High Temperature Line Plugging  – Ultimate Safety

Furmanite’s HTP Line Plugging system brings control to pipe systems operating at temperatures above 340 degrees F which is when traditional Line Stop Seals begin to break down.  Utilizing a metal-to-metal seal and a true double block-and-bleed feature, HTP Line Plugging provides effective flow stoppage on piping systems that need repair or modification and system shut-down is undesired.

HTP Line Plugging is used on pipes containing high pressure or super-heated steam, hot oils, asphalt, and other high temperature process pipes.

HTP Line Plugging Features

  •  HTP Line Stops Pipe Contents on lines ranging from 3/4″ – 20″
  • Standard HTP Line Plugging temperature rating to 700 degrees F
  • Super-HTP Line Plugging temperature rating to 900 degrees F
  • True Double Block-and-Bleed Feature
  • Time-Tested, effective design
  • Metal-to-Metal Line Stop Seal
  • Tapered Completion Plugs for safe, effective valve recovery

HTP – High Temperature Line Plugging

Furmanite’ HTP Line Plugging System is the time-tested, pioneering system for stopping the flow in operating High Temperature Piping Systems.  HTP Line Plugging is used on pipe systems operating at above 340 degrees F, when traditional elastomer seals begin to break down.  HTP Line Stops rely on a metal to metal seat, compressing copper against a freshly machined pipe surface.  HTP Line Stop Plugging Head design provides a true double block and bleed feature.

Furmanite performed the world’s first High Temperature Line Stop on a superheated steam line at the Republic Steel Mill in Chicago, Illinois during the late 1960’s.  Since then, we have successfully and safely performed thousands of these operations, including Line Stops on pipes to 20″ and at temperatures to 900 degrees F.

Furmanite - Innovative since 1920

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First DIY Leak-Sealing Kit The first do-it-yourself Leak Sealing kits were developed and marketed by Clay Furman and while they …

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Furmanite moves Overseas First overseas agents appointed to market the leak Sealing kits including in the United Kingdom and Euro…

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Price List from 1926 Table detailing costs of allowing a steam leak based on $4 per ton for “Long coal”. …

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New Direction Alan Forsyth, acting as a consultant to Furmanite Engineering (1929) advised the Board to move from selling low …

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Never to compromise on the high quality A brief history of the United Kingdom Furmanite organisation written by Joyce Hainsworth, the …

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Best in the business were called Furmanite successfully seals nitrous oxide leakage on the Space Shuttle “Discovery” pre launch September …

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Start of Modern Furmanite The common shares of Furmanite were acquired by Kaneb Inc on 24th January 1991. Furmanite remains …

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Acquisition of Flow-Serve GSG Division Furmanite as part of Xanser Corporation acquired the General Services Group (GSG) of Flow-Serve corporation …

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Corporate Name Change Xanser Corporation (NYSE:XNR) changed the company’s name to Furmanite Corporation, and the company’s shares were traded on …

Acquisition of SLM Acquisition-of-SLM_thumb 04/13/2011

Furmanite Corporation Acquires Self Leveling Machining Technology Furmanite expanded  its global on-site machining capabilities through the acquisition of Self Leveling …


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