It is used to terminate the end of a piping system. The blind flange is basically a flange that does not have a hub or a bored center. Blind flanges have the face thickness of a flange, a matching face type, and similar bolting pattern. Blind flanges can also be used to seal a nozzle opening on a pressure vessel.
What is flange and its types?
The key types of flanges are the welding neck, long welding neck, slip-on, socket weld, lap joint, threaded and blind flanges. In addition to these standard flanges, some special ones exist, called Weldoflange/Nipoflange and Elboflange, swivel flange, expander/reducer flange, and orifice flanges.Sep 20, 2017
What is a flange in engineering?
A flange is a projecting ridge, rim, collar or ring on an object such as a column, beam, pipe and so on that provides additional strength or stiffness or additional surface area for the attachment of, or to, another object. For example, flanges may be used to strengthen beams, or to connect or terminate pipes.Nov 5, 2020
What is flange class?
The term “flange rating” (or class) refers to the maximum pressure (in psi or bars) that a flange withstands at increasing temperatures. Flanges with a higher rating (class) are stronger than flanges with lower ratings, as they bear more pressure at increasing temperatures.Sep 20, 2017
What is a skillet blind?
Skillet flanges are blind flanges that due the same thing, but where the difference lies, is that the skillet flange has a paddle neck at for slide in installation between the pipes and subsequent bolting as required to ensure the fluids are entirely blocked.Sep 26, 2019
What is a skillet in pipeline?
Brochure. The original Flange Skillet™, which has been in use since 1980, self-aligns the gasket and remains within the flange assembly. The neck of the skillet is perforated allowing divers to break off the handle flush with the outside diameter of the flange.
How many types of blinds are there in piping?
Spectacle blind, spades, and spacers are also known as figure-8, paddle blank, Slip blind, and spacer. These are three different components that used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown.
What is the purpose of a spec blind?
A spectacle blind or spec blind, abbreviated as SB, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. It is different than a valve in that the blind is a permanent or long term isolation device.Jan 10, 2016
Is a blind flange a fitting?
Features of blind flanges: Blind flanges are sometimes supplied with NPT fittings which allow pressure test connections to be fitted. They are used to blank off the ends of pipe. They are also used to blank off the ends of valves and pressure vessel opening. ... Blind flanges are made to fit standard pipes in all sizes.
What are the two main types of flanges?
We usually consider two main families of flanges, the standard flanges and the special ones.May 16, 2018