What is LWN flange?
A Long Weld Neck Flange is an integral self-reinforcing Flange connection primarily for ASME Pressure Vessel applications. The Long Weld Neck (LWN) Flange was designed to be used in place of a Weld Neck Flange and piece of pipe for a bolt up connection to the vessel.
What is a long weld neck flange?
Long weld neck flanges (also known as LWN) have an extended neck that acts as a boring extension and is longer than a standard weld neck flange. Welded neck flanges are easy to recognize because they have a long tapered hub that reduces its size from the pipe to the fitting.
Do long weld neck flanges have schedules?
Long weld neck flange is typically are made with square cuts to replace pipe, not to be welded up to pipe. Due to this, long weld necks do not have schedule bores.
What is raised face flange?
The Raised Face flange is the most common type used in process plant applications, and is easily to identify. It is referred to as a raised face because the gasket surfaces are raised above the bolting circle face.
What does RTJ flange mean?
Ring-Type Joint
The Ring Type Joint flanges are typically used in high pressure (Class 600 and higher rating) and/or high temperature services above 800°F (427°C). An RTJ flange may have a raised face with a ring groove machined into it. This raised face does not serve as any part of the sealing means.
How do I know what flange I have?
You need to find the outer diameter, the inner diameter, the number of bolt holes, bolt hole diameter, and the bolt circle diameter. Bolt circle diameter (B.C.) is one of the most important measurements to make when identifying a flange.
Can you use a full face gasket on a raised face flange?
Full-Face Gasket Like the ring-type gasket, this can also seal raised flange faces, but will have an OD the same as the flange. That means it needs holes for the securing bolts to pass through, and these help locate the gasket on the flange, making alignment easier.
What is smooth finish flange?
Smooth finish flanges are more common for low pressure and/or large diameter pipelines and primarily intended for use with solid metal or spiral wound gaskets. Smooth finishes are usually found on machinery or flanged joints other than pipe flanges.
What is a flange connection system?
What is a flange connection system? Flanges are the parts that connect the shaft to the shaft and are used for the connection between the pipe ends. They are also used for flanges on the equipment inlet and outlet, for the connection between two devices, such as the reducer flange.
What is a WN flange?
A weld neck flange (WN flange) means a flange has a neck for welding with the pipe, it is easily to recognized by their long tapered neck on the flange (The neck is also called hub in the weld neck flange).
What is an ANSI flange?
The ANSI flange is a three-part flange consisting of one flat flange, one flange machined to take a rubber O-ring and the rubber O-ring. The rubber O-ring is placed into the machined groove in one side of the flange and the assembly is tightened against the flat-faced side of the ANSI flange and secured with bolts which are…
What is stainless steel flange?
Stainless steel flanges are used for high pressure applications adapting forged steel flangeds to various threads such as NPT , JIC , ORB, etc. Stainless flanges are ANSI 150#, 300#, and #600 ansi flanges for high pressure pipe installations.