Curtiss-Wright EST Group

Curtiss-Wright EST Group specializes in the development, manufacture and marketing of highly-engineered products and repair services for shell and tube heat exchangers, condensers, coolers and chillers.

Their best known product, the Pop-A-Plug Tube Plugging System, is the industry leading technology for plugging leaking and degraded heat exchanger tubes. EST Group also engineers and manufactures test plugs, pressure testing and isolation plugs to greatly simplify and speed-up pressure testing and/or isolation of piping, tubing, valves, pressure vessels and a multitude of special applications.

EST Products

Pop-A-Plug® Tube Plugging System

Rapid preparation and plugging for heat exchanger, condenser and boiler tubes.

  • Quickly Prepare and Plug Leaking Heat Exchanger, Condenser and Boiler Tubes
  • Install and Remove Plugs Without Welding or Explosives
  • Locate and Identify Leaks

EST Group offers a complete line of tube plugs and plugging systems designed for quickly preparing and plugging leaking heat exchanger, condenser and boiler tubes. Plugs are suitable for service in operating pressures up to 7,000 psi (483 Bar) and are designed to be installed without welding or explosives. A variety of systems and tools are available for installation and removal.

Tube stabilizers are designed for stabilizing fractured or severed heat exchanger tubes while tube sleeving is designed to effectively repair damaged tube ends.

Also available are tube testing guns for locating and identifying leaking heat exchanger tubes.

Hydrostatic Test and Isolation Plugs

Safe, effective solutions for rapid testing and repairs

  • Test Open End Pipes, Pipelines, Tubes and Pressure Vessels
  • Perform Flange-To-Pipe Weld Testing
  • Isolate and Test Pipe Connections

EST Group offers a complete line of Hydrostatic Pressure Test and Pipeline Isolation Plugs for hydropressure testing pipework, pipelines and pressure vessels. Hydro Test plugs for pipe provide safe and effective testing at working pressures up to 15,000 psi (1034 Bar). Pipe OD and ID sealing versions available.

Pipe isolation plugs are designed for quickly isolating and hydrostatically testing weld joints of any welded flange-to-pipe connection as well as isolating pipe ends during cutting, grinding and welding operations.

Also available are hydrostatic test pumps that are ideal for use with our entire range of pressure test plugs.

Specialty Tools

A complete line of lightweight tools

  • Pipe Tapping Tools for Sampling or Draining Pipelines Under Pressure
  • Plumber's Tools for Valve Changing, Soldering and Wet Tapping

EST Group offers a complete line of compact, lightweight tools for tapping into existing pipelines under pressure. Ideal for sampling and/or draining the contents of a pipe or pressure vessel.

Also available are plumber's tools for simple valve changing, soldering and wet tapping.


EST Services

In our shop or at your site

  • Tube Cleaning
  • Tube Inspection & Testing
  • Tube Sleeving & Plugging
  • Tube Pulls
  • Partial Retubing
  • Pipe & Pressure Vessel Inspection & Testing
  • Training

EST Group Field Services provides a complete range of on-site services for your tubular heat exchangers, condensers and oil coolers. Our trained service technicians have the experience and knowledge to handle even the most demanding jobs, safely, competently and on-time. We can quickly respond and meet even your tightest schedules.

Join our growing list of satisfied customers in the nuclear & fossil power generation, chemical, petrochemical, oil refining, pharmaceutical, industrial gas, shipbuilding and boiler manufacturing industries.


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