What is a Blind flange?

Sanjay Metal India is a leading ANSI B16.5 BLRF Flanges Stockist and Supplier in India. The primary function of the blind flange is to completely isolate the production medium. This prevents the shut-off valve from closing properly, affecting production and perhaps causing accidents.

Posted 2 months ago in Current Events, updated 2 months ago.

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What is a Blind flange?

Blind Flange

Stainless Steel Blind Flange, also known as a blind disk or flanged pipe plug, is similar to a flange cover. To seal the pipe entrance, a blind flange has no openings in the middle. As a result, it serves the same purpose as a pipe stopper or a pipe cap. The distinction is that a blind flange is a removable piece of equipment that is simple to repair or maintain. Sanjay Metal India is a leading ANSI B16.5 BLRF Flanges Stockist and Supplier in India. The primary function of the blind flange is to completely isolate the production medium. This prevents the shut-off valve from closing properly, affecting production and perhaps causing accidents.

Blind Flange Dimensions, Blind Flange Specification, Blind Flange Manufacturing Standards, and Blind Flange types

Blind Flange Dimensions

  • General use OD range: 1/2”, 2”, 3”, 4”, 6”, 8”, 10”, 12”, to 24”.
  • Special made OD: Up to 60”.
  • Class range: Class 150, Class 300, 400, 600, 900, 1500, 2500
  • Flange face type: RF (Raised Face), RTJ (Ring Type Joint)

Blind Flange Specification

  • Material: Carbon, Alloy and Stainless Steel
  • Standards: ASTM A105, ASTM A182
  • Sizes: 1/2” to 24”, Customized up to 48”
  • Thickness: Schedule 10(S) to SCH 160
  • Pressure Ratings: Class 150 to 2500
  • Face Type: RF, RTJ

Blind Flange Standards

  • Blind flanges are primarily made of carbon steel, stainless steel, alloy steel, copper, aluminum, and other materials.
  • Carbon steel blind flange: ASTM A105
  • Alloy steel: ASTM A182 F5, F9, F11, F22, F91
  • Stainless steel blind flange: ASTM A182 F304/L, F316/L

Manufacturing Standards

  • ASME B16.5
  • BS 3293
  • DIN 86029

SS Blind Flange Types, ASTM A182 Stainless Steel Flange Grades

Blind Flange Types

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