McElroy Discussion Forums

We are having problems with the two jaw machines such as the PitBull.
In the field you have less then perfect condition. Especially in new Developments where you have obstacles to go around, under or over.Our problem is we can’t consistently get strait joints without taking lots of time setting up. Has anyone else had a problem with doglegs?
Walt,

Dear Welder,
There are a couple of issues that need to be addressed.

If there is a tight bend near the pipe end where a joint will be made, you need to consider fusing in a 45-degree ell. Even if you were using a 4-jawed machine, you would have to bend the pipe around to fit in the outer jaws then bend it to fit in the inner jaws. While it may seem to make it easier to get alignment, it probably is not and in either case, there is probably too much stress in the joint after the fusion is made. You would have to make sure you increased the cooling time to make absolutely sure that the joint is cool before removing the machine or risk joint failure in the future.

The 2 jawed machines (2LC and 14) are well suited to fusing pipe and attaining great alignment, but it sounds like you are talking about a special situation and extra measures must be taken.

Ted Thanks for your reply, I would say we have about 12 or so of these machines.
Do you think if we had the carts with the support arms, would this help us? Most of our work is in new housing developments where we have to negotiate piles of dirt, truses, dumpsters and other contractors.

Welder,
Yes, the carts with outriggers will definitely aid in alignment of the pipe coming into the machine. We would encourage you to use them. Not only will they aid in alignment, they also speed up the process so you can make more fusion joints in a days time. Please call your local distributor and order the carts. You will be glad you did.