CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible...

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CHECK VALVES •Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted to the welding torch handle and at the regulator outlet connection. •Check valves are necessary safety devices attached between the hoses and

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Transcript of CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible...

Page 1: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

CHECK VALVES•Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted to the welding torch handle and at the regulator outlet connection.

•Check valves are necessary safety devices attached between the hoses and the regulator outlets.

Page 2: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

TORCH HANDLE

• The torch handle is probably the most frequently used item in a welding shop.

• Cutting attachments, welding tips and heating nozzles are all connected to the torch handle.

• Always inspect the torch handle head, valves and hose connections for oil, grease or damaged parts.

• Oxygen connection is usually marked “OXY”

• Acetylene connection is usually marked “FUEL”

Page 3: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

TORCH HANDLE Identification• Torch Head

• Barrel

• Torch Body

• Oxygen Control Valve

• Acetylene Control Valve

Page 4: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

WELDING NOZZLE

•Inspect the cone end, coupling nut, o-rings and welding nozzle for damage, oil or grease.

•Connect the welding nozzle to the torch handle. Tighten the coupling nut hand-tight only. Wrench tightening may damage o-rings and create a faulty seal allowing leaks.

•Note- There must always be two o-rings on the cone end of the nozzle. The absence or damage of either of these o-rings allows premixing and leaks of oxygen and acetylene.

Page 5: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

HEATING NOZZLE

Page 6: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

CUTTING HEAD ATTACHMENT

Cutting Oxygen (Top)

High-Pressure Cutting Oxygen Lever

Pre-Heat Oxygen Control Valve

Mixing Chamber Coupling Nut

Pre-heat Oxygen (middle)

VICTOR

SMITH

Pre-heat Acetylene (bottom)

Page 7: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

CUTTING TIP

•Preheat Orifices

The Mixture of Oxygen and Acetylene Gas (6 surrounding holes)

•Oxygen Cutting Jet Orifice

Pure Oxygen (Center Hole)

Page 8: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

Oxygen Regulator

Page 9: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

Oxygen Regulator- Cylinder Pressure Gaugeright side – closest to cylinder valve

Page 10: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

Oxygen Regulator- Working Gaugeleft side- above green hose connection

*NEVER EXCEED 40 PSI

Page 11: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

Acetylene Regulator

Page 12: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

Acetylene Regulator- Cylinder Pressure Gaugeright side- closest to cylinder valve

Page 13: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

Acetylene Regulator- Working Gaugeleft side- above red hose connection

*NEVER EXCEED 15 PSI

Page 14: CHECK VALVES Are installed to prevent the reverse flow of gases that would result in a combustible mixture in the welding hose, check valves are mounted.

Protective Wear• Shade #5 Goggles

or Glasses

• Friction Lighter (striker)

• Leather Gloves & Coveralls

• Leather Boots


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