Choosing the Right Drive Shaft Flange for Your Car
Sometimes, a damaged drive shaft flange is the culprit behind your car's transmission system leak. The drive shaft flange's role is to function with a seal to fortify the connection in the drive shaft. It also keeps the drive shaft impermeable from air and water. A damaged or broken drive shaft flange in your car needs to be replaced immediately because it usually causes a leak. Choosing the right drive shaft flange for your car isn't that simple because there are many kinds of it. To make the correct decision, arm yourself with the following information before purchasing one:
API vs ASME and ANSI standards
In choosing a drive shaft flange, consider if it meets the standards of the American Petroleum Institute (API), American Society of Mechanical Engineers (ASME), and the American National Standards Institute (ANSI). A drive shaft flange that is up to par with API standards can hold out against high temperatures and pressures, and are more applicable for gas and oil applications. Conversely, flanges that meet ASME and ANSI standards are more commonly issued for air, steam, and water applications. What makes API flanges different from ANSI or ASME flanges is the component material that can tolerate high pressure.
Types of drive shaft flanges
There are six types of drive shaft flanges and each has its applications and specifications.
- Slip-on flange: The slip-on flange comes in small or large sizes. It is the least expensive among the types of drive shaft flanges. Its diameter is slighter bigger than the pipe, which allows it to easily slide directly over it. Both the interior and exterior of the flange face is welded to avoid leaks. The slip-on flange is a replacement to welding necks when space or cost is an important concern.
- Threaded flange: The threaded flange is similar to the slip-on flange, but unlike it, its bore is threaded, which enables it to be assembled without the need for welding. It is limited for use in low pressure piping systems.
- Weld-neck flange: This is probably the best type of flange because of its long, durable and heavy neck. It is quite expensive and is suitable for high stress or critical applications.
- Lap joint flange: The lap joint flange can be easily assembled and aligned. Because of this feature, it's preferably used for systems that require regular inspection and/or cleaning.
- Socket weld: The socket weld flange is similar to the slip-on flange and it is used in four-inch and smaller high-pressure systems. This type of flange is counter-bored a little larger than the outer diameter of the pipe and bored to the inner diameter of the pipe so that the pipe can be welded and assembled in place.
- Blind flange: The blind flange doesn't have a bore and is used to shut off pumps, valves, and pressure vessel openings to prevent flow. Among the different flange types, the blind flange is the most highly stressed. It is appropriate for use on higher pressure and temperature systems.