See Price. Last Updated: August 30, References Approved. Paul Carpenter Sep 7, Also, the precautions to be taken. Knowing gaugd to set oxy acetylene regulators is not only for the best use of an oxy-acetylene torch but also for general understating. Do not try lighting with some oxy because that is an explosive mixture.

Liquid acetone stabilizes this gas to prevent it from combusting. Also, the cylinders themselves are laced with acetone, which makes it possible to safely transport or move around the acetylene gas tank or cylinder. If the acetylene pressure exceeds 15 psi, it will use up the acetone present in the cylinder to be stable. While it has a positive effect on acetylene, it negatively affects the components of your system.

Acetone can cause damage or deterioration to any plastic or rubber parts, affecting cut quality. This will also eventually cause the regulator to fail, stopping the entire system.

This failure is a sign that the acetone present is nearly depleted and what mostly remains in the cylinder is dangerous raw acetylene. The worst-case scenario is that the rubber hose will deteriorate before the regulator fails because it has drawn up so much acetone. And when this happens, an explosion is likely to occur. Turning off the cutting torch, particularly involving oxygen and acetylene, should follow the right order for safe operation.

However, this is a point of contention for many; some believe that the acetylene valve must be switched off first, while others advocate cutting off oxygen supply first. The consensus among manufacturers is that the oxygen should be switched off first followed by acetylene, not the other way around. This allows any soot that settled on the torch to be blown away by the acetylene.

A buildup of soot can prevent the fuel valve from properly being sealed off, causing it to leak. This method also allows you to see if any leaking is present before you completely switch off the cylinders. If there is an Woodworking For Beginners Kit You acetylene leak, a small flame will remain after you turn off oxygen then acetylene. Detecting a possible acetylene leak is crucial to avoid an explosion. Interchanging them is possible, but hearing a loud bang is more likely if you switch off acetylene first before oxygen.

This pop indicates a mini-flashback and when this happens, you must immediately turn off the oxygen. Even mini-flashbacks can be potentially dangerous. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Skip to content One of the most widely used cutting tools around is the oxy-fuel or oxy acetylene cutting torch, also commonly referred to as the blow torch.

Rules of Thumb For Oxy Acetylene Torch Settings The proper use of an oxy acetylene cutting torch , especially with the right pressure settings, ensures that the quality of the cuts made would rival that of machine cuts. Pressure Settings Chart Take a look at the pressure settings chart below to get a thorough understanding of what your torch should at for the most optimal results.

Oxy Acetylene The recommended setting for multi-hole cutting using oxy acetylene is the oxygen regulator at 40 psig with the acetylene regulator setting at 10 psig. Single-hole welding and brazing Start looking for the stamped single-hole tip to see what number it has. Here are the important steps to follow when setting up an oxy acetylene torch: Ensure that the cylinders or tanks containing oxygen and acetylene are properly secured and in an upright position.

Use a cylinder cart if available but if not, ensure that they are properly fastened or chained to a sturdy object, post, beam, or wall. They should never be knocked down during operation and even when not in use. Remove any coverings placed on the valve of the cylinder or tank. But if protective covers were not used, remove any dust or debris that has settled inside the valves, which can cause the torch to malfunction.

This quick release of gas will immediately blow away the dust or debris. Connect the regulators to the valves but confirm first that they have the same threads. If not, use an adaptor to connect them. It is important that they have a completely tight and secure fit not just for safety but also for proper monitoring of the pressure settings. Manually screw them by hand as tight as you can, and use a wrench with a fixed opening to finish tightening them.

Attach the proper hoses if they are not yet connected to the respective regulators. If you have already used them before, connect them to the same tanks as before.

Note that the standard practice is to use green hoses for oxygen and red hoses for acetylene. Never apply any oil , grease, or any form of lubricant to the hoses, especially on its ends. Log in Social login does not work in incognito and private browsers.

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Tips and Warnings. Related Articles. Article Summary. Part 1 of Fasten oxygen and acetylene cylinders in an upright position. If you have a cylinder cart, place both the oxygen and acetylene cylinders into it. If not, Best Lock For Kitchen Cabinets 30 they should be securely fastened with a chain to a workbench, a wall, or a post. Cylinders should not be able to be knocked or pulled over. Clean the valve outlet of accumulated dust or dirt. This will clear out any dust or dirt that may have settled in the valve.

It needs to be cleaned out otherwise the debris might get into other parts of the torch and cause it to malfunction.

Connect the oxygen and acetylene regulators to their cylinders. Tighten the nuts of the regulator connections with a wrench. Use a wrench with a fixed opening rather than an adjustable wrench that is designed specifically for welding tools. You can buy these from a hardware store or a specific apparatus supplier. Rotate the pressure-adjusting screw to the left until it turns freely. Do this for each regulator. The valve in the regulator needs to be closed before cylinder pressure is admitted.

Turning the pressure-adjusting screw counter-clockwise removes the pressure from the spring in the regulator. Open the oxygen and the acetylene valves very slowly. Open the valves slowly to protect yourself and your machine from any potential combustion.

Leave the wrench on the acetylene valve while it is open. Think ahead when you are starting a project and bring your tools to your workspace before beginning. Part 2 of Use a hose and hose connections specific to welding and cutting. Oxygen hoses will have a green cover, while acetylene hoses will have a red cover. Never interchange these hoses as they are meant for different substances.

Do not use any oil or grease on the hoses. Attach the oxygen hose to the oxygen regulator and to the torch. The torch should have identifying marks on the body or the handle showing where the hose should be connected. Most torches have 2 oxygen connections because 1 is used for the cutting jet and 1 is used for the preheat flames. Connect the acetylene hose to the acetylene regulator and to the torch. Whichever connection is not for the oxygen is for the acetylene.

Tighten the hose connections with a wrench. Use a non-adjustable wrench to securely fasten both the oxygen and acetylene hoses to the torch. Part 3 of Close both torch valves. For the oxygen, turn the pressure-adjusting screw on the regulator until the gauge reads about 25 psi. For the acetylene, turn the pressure-adjusting screw on the regulator until the gauge reads about 10 psi.

Leaks can cause harm to you or your surroundings and may lead to spontaneous combustion of the cylinders. Apply a leak-test solution with a brush. Apply the solution to the cylinder valves, the cylinder and regulator connections, and all the hose connections.

You can either buy a solution from the store for this specific purpose, or you can dissolve Ivory soap in water to make a thin paste for the same results. Check the leak-test solution for bubbles.

Bubbles indicate that either oxygen or acetylene is coming through the connectors and the connection needs to be tightened or reattached completely. Release all pressure from any system that has a leak. Reattach or retighten as needed, and apply the leak-test solution a 2nd time to test the torch for leaks again. After completing the testing, make sure to turn off both the oxygen and acetylene.

Part 4 of Turn the oxygen regulator pressure-adjusting screw. Slowly do this until you reach the desired pressure. To avoid troubleshooting while you are using an oxy-acetylene torch, setting the regulators becomes one of the crucial parts of your welding or cutting job.

This guideline will let you know to set oxy-acetylene regulators applying a few tricks to control the gas supplies. Learning the use of the oxy-acetylene regulator becomes an essential part because it lets you light safely to the torch flame. Almost every welder knows how cool it is to use an oxy-acetylene torch for welding and cutting, heating, and soldering metal with ease.

It features an extreme heat function that is controllable. It requires a regulator that is most important to set perfectly. We also know this regulator as a pressure-reducing regulator. Setting a pressure regulator for oxy-acetylene is related to a few things. This regulator becomes a centerpiece of your whole welding session. Most of the welders face the oxidizing problem while they are trying to use a regulator. It happens when there is any carbon present and the pressure is not in control.

First of all, ensure the acetylene is not more than 30 pounds because it minimizes the chance to see the gauge. Every regulator has a gauge that cannot show over 15 pounds. When the gauge is indicating the red portion of the regulator that means it exceeds the level of 30 lbs.

So, putting pressure is a crucial thing and you must consider it. When the pressure is below 15, then it will show you an almost accurate result. Keeping the oxygen and acetylene cylinder in an upright position is essential to keep it secure. Most manufacturing companies give a cylinder chart for the guideline. Fastening all these cylinders with chains will be a better idea to keep them secure all the time.

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