stamp ratings on their highest quality specialty
hoses, but not on the lower grade commodity
hoses. The pressure ratings for unmarked hoses
can be found in the manufacturer’s catalog
descriptions.
When selecting hoses, pay particularly attention
to anhydrous ammonia supply and transfer
equipment. These hoses work under extremely
high pressures. They can have working pressure
ratings of 350 psi and burst pressure ratings of
1,750
psi; a difference of five times (rather than
the common four).
Components of an anhydrous hose:
1.
The tube that will transport the actual material.
3.
First layer of reinforcing fibers.
4.
Second layer of reinforcing fibers.
2.
Inner layer of protection.
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