(g) Pipe wrenches.
1. Adjustable pipe wrench. The adjustable pipe wrench will work in
one direction only. Always turn the wrench in the direction of the opening of the
jaws. Apply force to the back of the handle. Since the top jaw is capable of a
slight angular movement, the grip on the work is increased by pressure on the
handle (fig 16).
Figure 16.
Using adjustable pipe wrench.
2. Adjustable strap pipe wrench. When using the adjustable strap
pipe wrench, loop the strap around the pipe in the opposite direction to that in
which the pipe is to be rotated (fig 17). Slip the end of the strap through the
shackle and draw it up tightly. Pull the handle to turn the pipe in the desired
direction. The jaw at the end of the shackle will seat against the strap and, as
the handle is pulled, the strap will tighten and turn the pipe.
Figure 17.
Using a strap pipe wrench.
3. Adjustable chain pipe wrench. The adjustable chain pipe wrench
is used in the same manner as the strap wrench. The chain acts as a jaw, when
looped around the pipe, gripping the pipe on the entire outer circumference. It is
used for rough pipework on very large diameter pipe.
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