red
In normal usage in an oxy/acetylene cutting torch, the acetylene hose is red and the oxygen hose is green.
Because it is also known as Dissolved Acetylene cylinder ...thus DA cylinder
A standard size Acetylene cylinder typically contains around 7 kg of Calcium Carbide, which is used to produce Acetylene gas through a chemical reaction. The amount of Calcium Carbide used can vary depending on the size and type of the cylinder.
Oxygen and acetylene hose fittings are made with different screws to prevent connecting the wrong gas to the hoses.
"MC" on an acetylene regulator usually refers to the type of cylinder it is designed to be used with. In this case, "MC" stands for "medium duty cylinder," which is a smaller sized acetylene cylinder compared to larger industrial cylinders. The regulator is specifically designed to fit and work with MC-sized acetylene cylinders.
Acetylene is different from most gasses in a tank. An acetylene tank is not hollow- it contains a porous material (think of a hard sponge) that is saturated with liquid acetone. When acetylene is pumped into the tank under pressure, it dissolves in the liquid. This is similar to how carbon dioxide dissolves in a soda (in a bottle or an) under pressure. While in the tank, it is mainly in a liquid.
Oxygen tank, Acetylene tank, regulators for each tank, hoses, a torch, and a striker. Check valves are also a good idea if they're not already installed.
Red for the combustible gas (Acetylene - MAPP - Propane), green for the Oxygen. All Oxy-fuel torches use these hose colors.
Oxygen is stored at a much higher pressure than acetylene, which requires a larger cylinder to contain it safely. Additionally, oxygen is less dense than acetylene, resulting in the need for a larger volume to store the same amount of gas.
When emptying an acetylene cylinder, it's crucial to follow safety precautions to prevent accidents. Ensure the cylinder is in a well-ventilated area away from flammable materials and heat sources. Always use appropriate personal protective equipment (PPE), such as gloves and safety goggles, and never allow acetylene to be released into confined spaces. Additionally, ensure that the cylinder valve is opened slowly and that the gas is directed away from people and equipment.
Acetylene hoses are typically color-coded with a red cover to indicate that they are specifically designed for use with acetylene gas. The red color helps to prevent mix-ups with other gas hoses and ensures proper safety precautions are followed.
Oxygen cylinders are typically larger and heavier than acetylene cylinders due to the higher pressure at which oxygen is stored. Oxygen cylinders may also contain more volume of gas compared to acetylene cylinders.