Product Manual

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4.3 Gas Hoses
An R-Grade twin hose is included in this kit. R-Grade is suitable for use with oxygen and
acetylene gas. DO NOT USE WITH PETROLEUM BASED GASES. The hose is color coded
green for Oxygen and red for Acetylene.
1. Examine the hose for cuts, burns and damaged fittings before use. Replace hose before
use if any of these defects are present.
2. Connect the hose to the regulators and tighten with a wrench.
3. For first time use*, in a well-ventilated area, adjust the Oxygen regulator to
approximately 5 psig and allow oxygen to flow through the green hose. This will purge
the hose of dust or preservatives present from the manufacturing process. Repeat the
process on the fuel side for the red hose.
4. Connect hose to torch handle and securely tighten with a wrench. If using Check Valves
or Flashback Arrestors, see 4.4 Check Valves & Flashback Arrestors.
*Always purge the hose when using new or replacement hose for the first time.
4.4 Check Valves & Flashback Arrestors
Check Valves are designed to allow gases to flow in only one direction: from cylinder to torch
tip. It prevents gases from flowing backwards and mixing in the hose and/or the regulator.
Flashback Arrestors prevent the flame from traveling backwards from the torch through the hose,
regulator and cylinder.
Check Valves are pre-installed on the supplied torch handle. It is highly recommended that
Check Valves or Flashback Arrestors be used at all times to reduce the possibility of
FLASHBACK, BACKFIRE or SUSTAINED BACKFIRE. Both can be obtained from your
local gas supplier.
When using Check Valves:
1. Connect Check Valves to base of handle and securely tighten with a wrench. Make sure
that check valves match up with the Oxygen and Acetylene sides properly.
2. Connect hose to Check Valves and securely tighten.
When using Flashback Arrestors:
1. Connect Flashback Arrestors to base of handle and securely tighten with a wrench. Make
sure that check valves match up with the Oxygen and Acetylene sides properly.
2. Connect hose to Flashback Arrestors and securely tighten.
Always inspect Check Valves & Flashback Arrestors prior to use. If oil, grease or damage is
present, DO NOT use and replace.