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Acetylene becomes unstable and can explode at pressures above 15 psi (pounds per square inch) when in contact with air or oxygen. It is important to handle acetylene cylinders with caution and always follow proper safety procedures to prevent accidents.

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Q: At What psi does acetylene become unstable?
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Acetylene gas should never be used at a pressure above?

Acetylene gas should never be used at a pressure above 15 psi (pounds per square inch). Higher pressures can cause the gas to become unstable and increase the risk of explosion.


Which of the fuels used in the oxy-fuel process becomes unstable if stored or used above 15 per square inch?

Acetylene becomes unstable if stored or used above 15 psi (pounds per square inch) due to the risk of decomposition or explosion. It is important to follow proper storage and handling procedures to ensure safety when working with acetylene in the oxy-fuel process.


What is the regulator adjustment pressure for oxygen and acetylene?

The recommended regulator adjustment pressure for oxygen is typically between 20-50 psi, while for acetylene it is usually between 5-15 psi. It is important to consult the specific manufacturer's guidelines for the correct pressure settings for each gas.


Why is acetylene rather than butane gas used for welding?

Acetylene is used for welding because it burns hotter than butane, allowing for faster and more efficient welding. Additionally, acetylene produces a reducing flame, which helps prevent oxidation of the metal being welded. This makes it particularly well-suited for welding ferrous metals like steel.


What oxygen and acetylene pressures are used when cutting 12.7mm sheet with a positive pressure torch?

For cutting 12.7mm sheet with a positive pressure torch, oxygen pressure should typically be set around 30-40 PSI, while acetylene pressure should be set around 5-10 PSI. These pressures may need to be adjusted based on the specific torch and cutting conditions. Always refer to the manufacturer's guidelines for the most accurate pressure recommendations.

Related questions

Acetylene gas should never be used at a pressure above?

Acetylene gas should never be used at a pressure above 15 psi (pounds per square inch). Higher pressures can cause the gas to become unstable and increase the risk of explosion.


How many pounds per square inch in an acetylene tank?

In a new acetylene tank that is full there is 250 psi


When welding with a 3 tip what should the oxygen and acetylene be set at?

If you set your tanks to about 5 psi and 5psi, you should not have to change the pressure, instead simply adjust the knobs on the torch to give more of each gas. If this still is a problem, try 7-9 psi for each. NEVER NEVER NEVER go above 12 for acetylene, it is unstable at 15, best to not get close...


What gases can be crammed into small spaces with ease?

All of them, with caveat that some gases will auto ignite if compressed too much. (The biggest malefactor here is acetylene; if it's compressed to over 15 psi, it becomes highly unstable.)


Why gases are kept in air tight cylinders?

So they'll stay in the air tight gas cylinders. Some gases are expensive and others are dangerous (some are both), and you don't want them leaking out. These cylinders are not only air tight, they're very pressure resistant. Most gases are shipped at between 2000 and 5000 psi, and the cylinder has to be made to withstand that much pressure. Acetylene is shipped at 250 psi because it's unstable at higher pressures, but acetylene cylinders are also capable of withstanding 2500 psi.


Which of the fuels used in the oxy-fuel process becomes unstable if stored or used above 15 per square inch?

Acetylene becomes unstable if stored or used above 15 psi (pounds per square inch) due to the risk of decomposition or explosion. It is important to follow proper storage and handling procedures to ensure safety when working with acetylene in the oxy-fuel process.


What is the regulator adjustment pressure for oxygen and acetylene?

The recommended regulator adjustment pressure for oxygen is typically between 20-50 psi, while for acetylene it is usually between 5-15 psi. It is important to consult the specific manufacturer's guidelines for the correct pressure settings for each gas.


Is it safe to use an acetylene tank that has not been used in about 10 years?

If there is pressure in the tank it may be possible to use it. If not I wouldn't recommend it. In the tank there are blocks of material and Acetone. These absorb the Acetylene allowing it to be charged to 300 PSI. If the Acetone (it is in liquid form) has leaked out the Acetylene could explode if the cylinder is recharged. Acetylene pressure is RED LINED at 35PSI.


What causes air to become more unstable?

what is the only way air can become unstable


What is the pressure of a full acetylene cylinder?

OSHA standard, 1910.253(a)(2) says:Maximum pressure. Under no condition shall acetylene be generated, piped(except in approved cylinder manifolds) or utilized at a pressure in excess of 15psig (103 kPa gauge pressure) or 30 psia (206 kPa absolute). ... This requirementis not intended to apply to storage of acetylene dissolved in a suitable solvent incylinders manufactured and maintained according to U.S. Department ofTransportation requirements, or to acetylene for chemical use. The use of liquidacetylene shall be prohibited.


Why is acetylene rather than butane gas used for welding?

Acetylene is used for welding because it burns hotter than butane, allowing for faster and more efficient welding. Additionally, acetylene produces a reducing flame, which helps prevent oxidation of the metal being welded. This makes it particularly well-suited for welding ferrous metals like steel.


What does not cause air become unstable?

water