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2.0 – GENERAL DESCRIPTION
The Mathey Dearman Chain Clamp is versatile: Each clamp can be used to fit-up pipes, elbows, tees, and weld-on valves,
and is useful in many other pipefitting situations. Mathey Dearman Chain Clamps are available in Light Duty and Standard
models.
These instructions are essential to understanding how to use the Mathey Dearman Chain Clamp. If you have any questions
about setting up the clamp or an application that the clamp is to perform, contact Mathey Dearman Inc. at (800) 725-7311.
We’ll be glad to help.
Single Jackscrew Chain Clamp -
Aligns and forms out-of-round mating
pipe up to Schedule 40 wall thickness. If reforming is not required, a wall
thickness greater than Schedule 40 can be aligned, NOTE: The required
distance between the pipe and the bottom of the raised portion of the jackscrew
is less than the Double Jackscrew Chain Clamp and Universal Chain Clamp.
This makes it a little more difficult if you are running your root pass with a Mig
or Tig torch.
Dearman Lite Single Jackscrew Chain Clamp –
Manufactured
from the same type and quality of material as the standard Dearman Single
Jackscrew Chain Clamp. The Dearman Lite Single Jackscrew Chain Clamp will
typically align pipe up to Schedule 40 wall thickness. The Dearman Lite Clamp
is capable of some limited reforming tasks (see Chart 1 for details).
Double Jackscrew Chain Clamp -
Aligns and reforms out-of-round
between the mating pipe and fit-up pipe up to Schedule 40 wall thickness. This
model is recommended for use where a large amount of “Hi-Lo” exists. When
no reforming is required of the mating pipe or fit-up pipe, a wall thickness
thicker than Schedule 40 can be aligned. This is an excellent clamp to use
where full circle welding is required.
Dearman Lite Double Jackscrew Chain Clamp -
can align pipe up
to Schedule 40 wall thickness. The Dearman Lite Clamp is also capable of
some reforming tasks (see Chart 1).
