May 31, 2023 · Dimensions and Weights of Class 1500 RF Blind Flanges as per ASME B16.5. Dimensions include Flange OD, thickness, Bolt Circle Diameter, RF diameter, Bolt Circle diameter and Bolt hole diameter. All dimensions are in mm and weights in kg.

Raised Face (RF) The Raised Face flange is the most common type used in process plant applications, and is easily to identify. It is referred to as a raised face because the gasket surfaces are raised above the bolting circle face.

A blind flange is a type of pipe fitting used to close the end of a piping system or pressure vessel openings, preventing the flow of fluids or gases. Unlike other types of flanges, a blind flange has no central opening, making it a solid disk that provides a secure seal.

Flange - Blind, ANSI Class 150, B16.47 Series B, RF (in) Dimensions per ASME B16.47 - Large Diameter Steel Flanges: NPS 26 Through NPS 60 Metric/Inch Standard Bolt circle diameters are 1/8 inch larger than bolt diameter.

Sep 20, 2017 · The article shows the ASME B16.5 dimensions and weights for blind flanges (FF, RF). 2 1/2″ and smaller ±1/32″ (0.8mm) max. 3″ and larger ±1/16″ (1.6mm) max. BLIND FLANGE WEIGHT IN KGS.

Sep 25, 2019 · ASME B16.48 figure-8 blanks (spectacle blind flanges) with flat face or raised face (FF/RF): technical drawing, dimensions and weights, Class 150, 300, 600, 900, 1500, 2500, and NPS 1/2 or NPS 24.

Flange - Blind, ANSI Class 900, B16.5, RF (in) This datasheet is for flanges that have a Raised Face end connection. Additional in depth information about these kinds of flanges can be found on the Raised Face Flange page.

Mar 17, 2025 · A raised-face blind flange (RF blind flange) is a specialized type of blind flange designed for high-pressure and high-temperature applications. It features a raised ring or face around the borehole, which enhances its sealing capability by concentrating pressure on a smaller gasket area when mated with a similarly raised face flange.

Aug 15, 2019 · This page introduces the blind flanges of Class 150 through Class 2500 manufactured in accordance with ASME B16.5: construction & function, design codes, threaded hole tapping, dimension and tolerances.

Blind flanges, just like standard pipe flanges, can be raised face (RF) or flat faced (FF). If the flange is RF we would recommend a standard ring gasket that is appropriate for the service and/or test.