Mueller Line Stoppers and Qualitech

Mueller and Qualitech mean Quality

Furmanite provides complete Mueller and Qualitech Line Stopper Services to the gas industry and beyond.  Mueller Line Stopper equipment is the original method of Line Stopping used within the natural gas industry.  Mueller’s “No Blo” steel-wedge technology provides safe and effective isolation of natural gas systems when other systems are limited.

Qualitech Line Stopper technology is a light weight, yet rugged system used to stop flow in pressurized natural gas systems up to 6″.  With pressure ratings from 100 – 300 PSI, the Qualitech Line Stopper line is an indespensible and dependible line of equipment within our field service group.

Furmanite’s Line Stopper Service Complement Gas Companies Service Crews

Furmanite can assist any gas company during a busy construction cycle by responding to your field demands for quick, reliable response for Line Stopper Service.

We offer the following.

  • Mueller Line Stops from 3/4″ – 12″
  • Mueller Line Stoppers are pressure rated to 500 PSI
  • Furmanite has been a Mueller Gas Division distributor for decades
  • We can supply Mueller Line Stopper fittings and Line Stopper field services
  • Furmanite owns complete sets of all Mueller “No Blo” equipment
  • Furmanite field technicians are DOT Operator Qualified trained for Pipeline Line Plugging and Hot Tapping Services
  • Furmanite Provied high pressure curb valve tapping service beyond the pressure rating of traditional hot tap equipment
  • We own and operate redundant sets of Qualitech equipment from 3/4″ – 6″

Unparalleled Line Stopper performance

Furmanite offers complete Mueller Line Stopper field services to gas distribution and pipeline contractors throughout the World.  Furmanite’s relationship with the Mueller Company dates back to the 1960’s.  We own and operate multiple sets of Mueller Line Stopper machines in each size and pressure class category.

Mueller Line Stoppers provide an alternate means for Line Plugging and their “No-Blo” technology provides the most fail safe, reliable, and time tested Line Stop method available when working on natural gas distribution systems.  As the original manufacturer of Line Stopper technology for the Gas Distribution industry, Mueller Line Stoppers have provided decades worth of successful field operations.

Furmanite offers Mueller Line Stops from 2″ – 12″ and to pipeline pressures of 500 PSI.  We are a Mueller Distributor for over 4 decades and are available to supply fittings, replacement parts, and machine repair to fufill customer needs.

Unique Capabilties

Furmanite also complements our Line Stop Contractor services with a complete line of Qualitech Line Stopper machines and fittings.  As the original manufacturer of this machinery dating back to the early 1970’s, we have a complete line of machinery that can perform mechanical line stops from 3/4″ – 6″.  We no longer manufacture the equipment but have it available for sale as a distributor.  The Qualitech equipment provides an effective means of line stopping pipe flow on systems up to 300 PSI.  Ideal for working in tight quarters and light weight enough to be hand transported to work areas.  It is just another reason our field service operations are the most diverse and capable in the industry.

Furmanite - Innovative since 1920

Leak Sealing process developed leak-sealing-developed_thumb 01/01/1920

Furmanite Leak-Sealing process is Developed The under pressure Leak Sealing process is developed by Eugene Clay Furman at the Newport …

First DIY Leak-Sealing Kit old-furmanite-leak-sealing-equipment 01/01/1924

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

Long Standing Relationships Sales-Brochure-1926_thumb 01/01/1926

Long Standing Relationships US customer reference list that includes individual war ships in the US Navy, US steel companies and …

1st Patent is filed in 1927 furmanite-patents1 01/01/1927

1st Patent is filed in 1927 The Furmanite patent for the leak sealing process filed in 1927 was the first …

Furmanite moves Overseas Liverpool-Exibition_thumb 06/01/1927

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

Costs of a steam leak Sales-Brochure-1926-pg-8_thumb 06/01/1928

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

Furmanite is thinking global furmanite-the-skys-the-limit_thumb 01/01/1929

Furmanite is thinking global A brief history of the United Kingdom Company written by A W Forsyth (OBE) in September 1973 …

Technology Development leak-sealing-diagram 11/22/1934

Technology Development Furmanite Expands Engineering on Leak Sealing Technology. Photographs taken from a 1934 sales brochure together with schematics of …

Growing Furmanite purchase-letter_thumb 05/01/1960

Growing Furmanite Letter from the Chairman of Furmanite Engineering based in Birkenhead, England to his lawyer requesting information on a …

New Direction New-Technology_thumb 01/01/1966

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

Never compromise on the high quality Company-History-July-1979_thumb 07/01/1979

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

Best in the business were called NASA---Discovery-Team_thumb 09/01/1988

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

Start of Modern Furmanite company-overview 11/22/1991

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

Acquisition-GSG Division Acquisition-GSG-Division_thumb 01/13/2006

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

Corporate Name Change Corporate-Name-Change_thumb 01/13/2007

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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