Installing Regulators; Installing Hoses; Activating The Regulators - Smith Little Torch Owner's Manual

D
Industrial hydrogen cylinders are pressurized to approximately
2,250 psig (15,513 kPa).
D
Industrial acetylene cylinders are pressurized to approximately
250 psig (1724 kPa)

8-2. Installing Regulators

Oxygen regulator is identified by green color and has right-hand threads
for cylinder connection. Fuel gas regulator is identified by red color and
has left-hand threads for cylinder connection.
1. Attach the oxygen regulator to the oxygen cylinder and tighten firm-
ly with a wrench clockwise (right-hand threads). See Figure 2.
.
Always tighten regulator
connection nuts with a
wrench.
2. Attach the fuel gas regulator to the fuel gas cylinder and tighten
firmly with a wrench counterclockwise (left-hand threads). Fuel gas
regulators may have left or right hand threads. A regulator connec-
tion with machined grooves in the nut indicates the regulator has
left-hand threads. If there are no machined grooves in the nut the
regulator has right-hand threads (for use with MC or B acetylene
cylinders).

8-3. Installing Hoses

Replace hoses at the first sign of any defects, flaws, or dam-
age. The hoses should otherwise be replaced every four years.
Inspect hoses for damage or leaks before each operation. Do
not allow hoses to come in contact with hot metal, molten sol-
der, or corrosive chemicals. Do not expose hoses to fluxing
agents as these agents will deteriorate the hose materials and
cause them to leak.
Do not splice or use damaged oxy-fuel hoses.
1. Use only the hoses that are supplied by Smith Equipment. These
hoses transport low-pressure gases from the regulator to the torch
tips. The hoses are color coded (green) for oxygen and (red) for fuel
gas.
2. Attach the green hose to the oxygen regulator (right-hand thread)
and tighten firmly with a wrench.
3. Attach the red hose to the fuel gas regulator (left-hand thread) and
tighten firmly with a wrench.
4. Close both the oxygen and fuel gas valves on torch body.

8-4. Activating The Regulators

Do not stand in front of or behind the regulator when opening
the cylinder valve. Never open a cylinder valve suddenly as this
can damage a regulator or cause an oxygen regulator fire.
OM-263 357 Page 14
Figure 2. Installing Regulator
161-015