Blind Pipe Flange
The blind flange is a much more cost efficient way of sealing a pipe.
Blind pipe flange. Blind pipe flanges are typically provided with a raised face flat face or rtj facing. To connect flanges to pipe first sand the inside of the flange and the end of the pipe to remove the surface finish. The customer might ask for these solid gaskets with bolt holes or without.
These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end. They are oftentimes used for high pressure applications. They are reinforced with fiberglass layers for better strength and durability than any of our other pipe flanges for chemicals.
When a raised face is necessary for blind pipe flanges the standard height is 1 16 for blind pipe flanges under 400. Blind flanges are also used as a manhole cover in the vessel. For blind pipe flanges of 400 and up the standard blind pipe flange raised face height is 1 4.
Flanges have excellent corrosion resistance to handle a wide range of acids and other highly corrosive chemicals. Blind flange dimensions are covered in asme b16 5 which covers pipe flanges and flanged fittings for size nps to 24 for above nps 26 to 60 it should be as per asme b16 47. Flanges meet ansi asme b16.
Again we treat a blind flange just like any other pipe flange. This design allows for expansion or continuation of the pipeline by simply adding onto the final flange. Blind flange comes both as raised face and flat face.
A blind flange is a solid steel piece with no bore interior diameter and primarily designed to cap off a line. Usa industries provide these types of flanges in all material grades specifications in sizes that range from 1 2 thru 96 and asme ratings from 150 to 2500. A common request for gaskets with a blind flange is for a gasket with no id.
Blind flanges also allow for easy access to the pipe in case work must be done inside the line. Outer diameter of body. If the blind flange is a standard asme flange the od of the gasket will be the same as the.
5 and astm d4024 specifications and testing requirements for product dimensions performance and material quality. The blind flange is a blank disc with a bolt hole. As the majority of flange connections allow for the passing through of air or fluid via an interior opening blinds give the ends of pipe connections a well formed termination point or rerouting of the media in question towards another portion of the pipe assembly.
During dimensional inspection of flange you should check for following. Blind pipe flange is also used for pressure testing equipment. Next mix the adhesive sold separately until the color is uniform with no streaks.
When a pipeline is being constructed a blind flange is often incorporated into the final length of pipe.
