Chapter 25: Oxyfuel Welding Exam #1 Question with
verified answers
oxyfuel welding (OFW) - √√Process that uses heat from combustion of mixture of
oxygen and a fuel gas (ex. Acetylene, porpane, natural gas, hyrdogen or
propylene)
Difference between OFW and oxyacetylene welding (OAW). - √√OFW- known as
gas welding
OAW- uses acetylene as fuel gas
Minimum distance gas cylinder must be separated from combustible materials -
√√20"
Max amount that valve on acetylene cylinder should be turned - √√1/4"
Purpose of pressure regulator - √√control flow of gas from cylinder to maintain
required working pressure
Safe pressure level of oxygen - √√as high as 2200 psi
Safety pressure level of acetylene - √√as high as 250 psi
acetylene hose - √√hose with left hand thread and the color red
oxygen hose - √√hose with right hand thread and color green
verified answers
oxyfuel welding (OFW) - √√Process that uses heat from combustion of mixture of
oxygen and a fuel gas (ex. Acetylene, porpane, natural gas, hyrdogen or
propylene)
Difference between OFW and oxyacetylene welding (OAW). - √√OFW- known as
gas welding
OAW- uses acetylene as fuel gas
Minimum distance gas cylinder must be separated from combustible materials -
√√20"
Max amount that valve on acetylene cylinder should be turned - √√1/4"
Purpose of pressure regulator - √√control flow of gas from cylinder to maintain
required working pressure
Safe pressure level of oxygen - √√as high as 2200 psi
Safety pressure level of acetylene - √√as high as 250 psi
acetylene hose - √√hose with left hand thread and the color red
oxygen hose - √√hose with right hand thread and color green
