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Enerpac ATM4 Flange Alignment Tool

The ATM4 Flange Alignment Tool rectifies misalignment quickly and safely, while providing a lightweight, portable, and productive solution with a maximum reaction force of 4 tons.

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Model Enerpac ATM4
Maximum Reaction Force 4 ton (imperial ton)
Minimum Bolt Size  1″
Maximum Flange Thickness 1.18″ – 5.23″
Reaction Force 2 Max 4 ton (imperial ton)
Weight  19 lb. (8.6 kg)


  • ATM-Series tools help correct flange misalignment and allow bolts to be placed into joints
    • This alignment takes place during pipe work construction or maintenance
  • These tools provide pipe installers and maintenance personnel with some of the simplest, safest, and most productive solutions available for flange alignment in the market today
  • ATM-Series tools rectify twist and rotational misalignment quickly, safely, and without the need for an external power source
  • Appropriate for use on most ANSI, API, BS and DIN flanges
  • No slings, hooks, or lifting gear required
  • Can be installed and used in any position- horizontally or vertically
  • Portable, lightweight design enables easy transport and use, even in remote locations
  • Each ATM-model contains a tool and kit box


Helpful resources:

ATM4 Dimensioned Drawing

ATM4 Instruction Manual

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Kind words from our customers:

  • GWY has been a great company to work with. My company requires receipts for all credit card purchases and GWY has made this very easy. With rental equipment this usually isn't the easiest to deal with but they have made this process very smooth. I get a weekly receipt emailed to me without having to ask for it. They also have great customer service and are very helpful and friendly. Would definitely recommend.”

  • GWY’s parts inventory and response is top notch. You can expect prompt, respectful, knowledgeable answers to questions and full cooperation when you need it. Truly a mark of a reputable company with a good team.”


Is there a warranty on your tools?

1-year manufacturers defect warranty on new tools.

What is the lead time on getting this tool to me?

If we have it in stock, we can send it next day air within the US to get to you tomorrow.

Does the tool come with anything?

All of our tools come with a case.  Our Turn-of-Nut & Shear Wrenches come with the one size socket and a metal case.  The cordless tools come with one or two batteries, a charger, and a case.

Do you sell tools outside the country?

Yes, we provide tools all over the world.