Advertisement
Oxygen Regulator
fig.1A
SGA30
High Pressure
gauge indicates
pressure in
Oxygen
Cylinder
Max Inlet pressure 300 Bar
Relief valve
Gas in from Cylinder
(fitting has normal right hand thread.) pressure turn anticlockwise
4.3.
CONNECTING THE FLASH ARRESTORS AND HOSES TO THE GAS REGULATORS
Connect the BLUE, OXYGEN flash arrestor to the outlet on the OXYGEN regulator. fig1A
4.3.1.
Then, connect the BLUE hose to the BLUE, OXYGEN flash arrestor.
4.3.2.
Connect the RED, ACETYLENE Flash arrestor to the outlet on the ACETYLENE regulator.
4.3.3.
4.3.4.
Then, connect the RED hose to the RED, ACETYLENE flash arrestor.
4.3.5.
Tighten all nuts securely with a wrench. If any sign of oil or grease is found on the flash arrestors or regulators discontinue use
immediately.
NOTE: New hoses contain a preservative powder which must be blown out before use.
4.3.6.
Prior to attaching the torch, blow out both hoses to eliminate any particles or debris. Perform this on one hose at a time and in a well
ventilated area, otherwise you may create conditions for fire or explosion.
a.
Turn the oxygen or acetylene regulator adjusting screw clockwise to allow 5psi to pass through hose.
b.
Allow oxygen or acetylene to flow for approximately 10 seconds to purge each hose in turn.
4.4.
ASSEMBLING THE TORCH FOR WELDING Refer to (fig.2)
WARNING! The teflon seal on the welding attachment inlet must not be damaged or missing, otherwise gases will mix inside the torch
‰
and result in flashbacks or backfires. Always inspect the seal, coupling nut and torch head.If either damage or oil is found, discontinue use
and contact your supplier.
4.4.1.
Screw the chosen welding nozzle into the welding attachment making sure that it is fully tightened down.
4.4.2.
Screw the welding attachment with nozzle attached onto the torch handle as shown below. Before fully tightening the ribbed nut, check
that the orientation of the gas valve knobs suits your normal welding practice. Adjust if necessary and fully tighten the ribbed nut.
fig.2
Welding nozzle
Low Pressure
gauge indicates
pressure of oxygen
indicates pressure
out delivered to the
torch
Max Outlet pressure10 Bar
Blue oxygen hose
Flashback
Arrestor
To increase pressure turn clockwise to decrease
Blue (Oxygen)
Welding attachment
Torch set-up for welding
Acetylene Regulator
SGA40
High pressure
gauge indicates
pressure in Acetylene
Cylinder
Max Inlet pressure 28 Bar
Max Outlet pressure 1.5 Bar
Flashback
Arrestor
Gas in from cylinder
(fitting has a reverse left hand thread.)
Red (Acetylene)
Low Pressure
gauge indicates
pressure of oxygen
indicates pressure
out delivered to the
torch
Red Acetylene hose
Ordinary thread
Non return valves
Reverse thread
Advertisement
