Gas welding equipment Flashcards
Name and explain all parts of gas pressure regulators
The high-pressure gauge:
Indicates the pressure in the cylinder.
The low-pressure gauge: hose pressure gauge-
This indicates the pressure in the hose and is always located closest to the hose.
regulator pressure screw:
Can be set to the required pressure by adjusting the regulator pressure screw
regulator pressure screw:
What does the high-pressure gauge indicate on gas pressure regulators?
The high-pressure gauge:
Indicates the pressure in the cylinder.
What does the low-pressure gauge indicate on gas pressure regulators?
The low-pressure gauge:
Can be set to the required pressure by adjusting the regulator pressure screw
What does the regulator pressure screw indicate on gas pressure regulators?
the regulator pressure screw:
This indicates the pressure in the hose and is always located closest to the hose.
Where is a flashback arrestor placed?
What does the flashback arrestor do?
Flashback arrestor –placed between hose and pipe on both cylinders to prevent the return of flame to the regulator through the hose.
How are the gases stored during gas welding? What is an exception to this?
Gas cylinders –Gases are compressed into cylinders at very high pressure, acetylene being an exception to this.
How are the gas canisters colour-coded?
Oxygen cylinders are colour-coded black/blue while acetylene is colour-coded maroon/red.
What is known as dissolved acetylene?
Acetylene is absorbed in acetone and held in a porous mass inside the cylinder. This is known as dissolved acetylene.
How is acetylene an exception to being compressed into a cylinder at very high pressure?
How is this problem fixed?
As acetylene will explode at high pressures, it is absorbed in acetone and held in a porous mass inside the cylinder. This is known as dissolved acetylene.
Name 3 pieces of gas welding equipment
gas pressure regulators, flashback arrestors, gas cylinders
