3. Soldering and brazing.

Question 0

3. Reading of high-pressure and low-pressure gages of oxygen and acetylene?

Answer 0

Oxygen: 
high-pressure 0 to 4000 psig, 
low-pressure 0 to 200 psig. 
Acetylene:
high-pressure 0 to 350 psig.
low-pressure 0 to 30 psig.

Question 1

1. What are the heat sources for large diameter tube and fitting systems?

Answer 1

May be acetylene, LP or other manufactured gas. Torch types preferred are single tip swirl-type torches. Aci-fuel equipment is not recommended.

Question 2

5. Sizes o f oxy-acetylene hoses?

Answer 2

3/16” less than 25”,
1/4’ and 3/8” More than 25”.
Samy: Max length of hoses not more than 30’?