Blind Flange Styles and Materials

2016 February23

Blind Flange Styles and Materials

Blind flanges are solid round plates that have no center holes. These plates have boltholes around the perimeter of the plate distributed in an even manner. They cover the ends of pipes and can help with pipeline cleaning and maintenance. There are many different kinds of sealing faces incorporated on a blind flange.
The sealing faces include:

-Flat Face
-Raised Face
-Male and Female Face
-Right Joint Face
-Tongue and Groove Face

Materials for Blind Flanges

This device come in a variety of different materials including aluminum, stainless steel, plastic, copper, alloy steel, and carbon steel, among other materials. They are also put into several different categories, some of which are used in conjunction with spacers and other items. They are produced in a variety of ways including cast-forged, medium plate cutting, striking and forced, and casting.

Functions of Blind Flanges

These items share block-off functions with shell covers, welding pipe plugs, and caps. They are reliable and ideal for systems that require complete sealing, either permanently or temporarily. They should not be galvanized when they are used in certain systems such as those distributing oil. The Figure 8 options are simple to use.

When sealing is needed, the blind plate is put into place. When normal operation is necessary, the restrictor in is used instead. These rings can fill clearances after blind plates are mounted and installed. Restrictor rings always have the same diameter as the pipeline in question, but they do not have throttling functions included.

The type of material and makeup for these items varies and depends on the pipe and overall needs.

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