A BLRF flange, or blind raised face flange, is a type of flange that is used to blank off the end of a pipe. It is a flat plate with a raised face, and it has all the necessary bolt holes for installation. BLRF flanges are typically made from steel, stainless steel, or alloy steel, and they are available in a variety of sizes and pressure ratings. Technical Specifications: Type: Blind Raised Face Material: Carbon Steel, Stainless Steel, or Alloy Steel Nominal pipe size (NPS): 1/2" to 24" Flange pressure class: 150 to 2500 Standard: ASME B16.5 or ASME B16.47 Facing: Raised face Bolt holes: ANSI #10 or #12 Finish: Black, mill finish, or hot dipped galvanized Applications: Piping systems Valves Pumps Tanks Pressure vessels Instrumentation Advantages: They are strong and durable. They are easy to install. They are available in a variety of sizes and materials. They are cost-effective.