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
CHECK VALVES
Feb 11, 2016
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. - PowerPoint PPT Presentation
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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 the regulator outlets.
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”
TORCH HANDLE Identification• Torch Head
• Barrel
• Torch Body
• Oxygen Control Valve
• Acetylene Control Valve
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.
HEATING NOZZLE
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)
CUTTING TIP•Preheat Orifices The Mixture of Oxygen and Acetylene Gas (6 surrounding holes)
•Oxygen Cutting Jet Orifice
Pure Oxygen (Center Hole)
Oxygen Regulator
Oxygen Regulator- Cylinder Pressure Gaugeright side – closest to cylinder valve
Oxygen Regulator- Working Gaugeleft side- above green hose connection
*NEVER EXCEED 40 PSI
Acetylene Regulator
Acetylene Regulator- Cylinder Pressure Gaugeright side- closest to cylinder valve
Acetylene Regulator- Working Gaugeleft side- above red hose connection
*NEVER EXCEED 15 PSI
Protective Wear• Shade #5 Goggles
or Glasses
• Friction Lighter (striker)
• Leather Gloves & Coveralls
• Leather Boots
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