BUG-O Systems Flame Cutting - Manual (Page 13)

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2. HOSES
a. Use ¼ inch (6.4mm) twin and single
hose (red for gas and green for
oxygen) with “B” size fittings. The
(notched) fitting is for gas and the
smooth fitting is for oxygen.
b. Fitting should be clamped tightly so
there will be no gas or oxygen
leakage. However, avoid stripping the
threads of the clamps and fittings.
c. Hoses with kinks, burned spots or
small cuts are very dangerous, and
will affect the quality of the cut.
d. If hose is damaged, should be spliced
or scrapped. NEVER USE TAPE TO
STOP A LEAK. It is dangerous, and
could cause a fire or explosion which
could seriously injure the operator or
others.
e. For a three-hose torch, the oxygen
hose has a 3/8 (10mm) to ½'' (13mm)
inside diameter to allow a greater
volume of oxygen flow for cutting.
f. The 50-foot (15.2m) standard length
of hose should be used. Additional
lengths of 25 feet (7.6m) can be
added. It is important for the operator
to know the exact total length of hose
connected to the torch so the regulator
gage can be set with the correct
pressure. Increase oxygen pressure
5 pounds (3515 Kg/M²) and gas
pressure 1 pound (703 Kg/M²) for
each additional 25 feet (7.6m) of hose.
Flame Cutting Handbook.p65 5/9/2007, 8:06 AM 13