SET-UP AND SAFE OPERATING PROCEDURES
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0056-0114
Body “Y” with Internal Flashback Arrestors
Most VICTOR
®
torch handles are equipped with built-in flashback arrestors. Flashback arrestors are
designed to prevent mixed gases from igniting upstream of the flashback arrestors.
CAUTION
It is not recommended to use accessory flashback arrestors on VICTOR
®
FC torch handles
since these devices are already built-in. Excessive flow restrictions may occur.
General Information on Flashback Arrestors
The flashback arrestors contained in this torch are designed to prevent a flashback flame from •
entering the hose and gas supply system. A very fine “filter-like” sintered stainless steel flame
barrier stops flashback flame.
For maximum service life of the flashback arrestor, completely purge all lines and hoses before •
connecting to the torch. This removes loose material contained in the hose or regulator that
could restrict flow through the flashback arrestor.
Flow restriction and torch over-heating results if dirt or “oily” LPG residuals are allowed to flow •
into the flashback arrestor and cause clogging. Make sure not to draw liquid. Always store and
use cylinders in the upright position.
Control Valves with Internal Reverse Flow Check Valves
The body “Y” has two control valves attached to it. The valve bodies are marked to distinguish
between the two valves. The body of one valve has left-hand threads to accept the fuel gas hose. The
other valve body has right-hand threads to accept the oxygen hose. The control valves never require
lubricating. Occasionally, the packing nuts may require a slight adjustment.
Most VICTOR
®
torch handles are equipped with patented built-in reverse flow check valves to reduce
the possibility of mixing gases in the hoses and regulators.
CAUTION
Check valves are mechanical devices that can leak when dirty or if abused. Check valves should •
be tested at least every six months, more often if hoses are frequently disconnected.
Careless usage, dirt or abuse can shorten the service life of check valves, thus requiring •
more frequent testing.
Follow the manufacture’s instructions for testing the check valves.•
NOTE
Reverse flow check valves are not the same as flashback arrestors. Check valves
are designed to help prevent reverse flow of gas upstream of the torch. Flashback
arrestors are designed to prevent mixed gases from igniting upstream of the flashback
arrestors.
Oxy-fuel Apparatus
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