Flanges are integral parts of several engineering and plumbing projects. In many applications, engineers are required to identify a method to close off a chamber or cylinder with extreme assurance & safety. The precaution is a requisite so that the substance inside should differ from the substance outside whether in composition or pressure. This is done by locking two pieces of metal or other material together with a circle of bolts on a lip. This “lip” is a flange.
Applications of ANSI Long Weld Neck Flanges
Applications which are performed under high pressure and demand a hub that is long and tapered is where weld neck flanges are mostly utilized. Such a flange finds exceptional use in environments which have extreme temperature fluctuations and excessive handling and bending.
Uses for Long Weld Neck Flanges
These (LWN) are predominantly used on vessels where a stretched neck is required. This is deemed to be a specialty flange as it has a protruding neck or hub, which also performs the function of a boring extension.
The narrowed neck is an aid in reducing the thickness of the steel as it then appears to be like a pipe extension. Steel LWN flanges are mainly used in the chemical and petroleum industries; these are also used in commercial and residential buildings that encounter high levels of stress and temperatures that fluctuate.
Blind Flange- Blind flange is placed towards the end of pipe or at the junction that has the possibility to be a future expansion in that direction and requires a repair up the line. A blind flange is a round plate which has all of the applicable blowholes except the center hole. It is because of this feature the blind flange is usually used to close off the ends of a piping systems and pressure vessel openings. It also allows for easy access to the interior of a line or vessel once it has been sealed and must be reopened.
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