ASME B16.48 Line Blanks - Piping & Pipeline
2019年9月19日 · In many piping systems, line blanks are usually required to isolate individual pieces of equipment at shutdown and to positively blank off selected process lines at the piping unit limits. They are also needed during operation, maintenance, or inspection and testing wherever positive shutoff is required to prevent leakage of one fluid into another.
Line Blanks and Applications in Piping Systems
Line blanks, also known as “line blinds,” covered under ASME B16.48 standards are used to isolate a portion of pipe, usually for maintenance purposes. There are different types of line blanks used to isolate piping by generally inserting a solid disc with seals to eliminate the ability of upstream process liquids and gases to migrate ...
Understanding ASME B16.48: Spectacle Blinds Explained
A spectacle blind, also known as a figure-8 blind, is a safety device used in piping systems to isolate a section of the pipe for maintenance, inspection, or shutdown. It consists of two metal discs connected by a small section in the middle, resembling a pair …
Piping Materials : Blinds, Spacers and Spectacle Blinds
Single line blind or blank is installed adjacent to a valve to ensure positive shut-off. Their purpose is to prevent accidental flow through a pipeline to a vessel. With the exception of cast iron, plastic, or fiberglass services, they are not drilled with bolt …
Spectacle Blind, Slip Blind and Spacers (Paddle Blank and Spacer)
Spectacle blind, spades, and spacers are also known as figure-8, paddle blank, Slip blind, and spacer. These three different components are used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown.
Piping Line Blanks, Blinds, Spacers, Spectacle Blinds ... - Piping …
This file calculates design thicknesses, allowable pressures, dimensions, and weights of line blanks, spacers, spectacle blinds (figure-8's), and restriction orifices per ASME B31.3 -2022, para. 304.5, Eq. (15). Data are applied from ASME B31.3, ASME B16.48, ASME B16.5-2020, and ASME B16.47-1999.
Spectacle, Line & Paddle Blinds & Spacers - Products | SwecoFab
We offer a wide range of spectacle blinds, spacers and blanks manufacture to API standards and B31.3 specifications. We are capable of handling size ranges from 1″ – 150 lbs class to 36″ – 2500 lbs class.702. We also manufacture bleed rings and lateral joints also. 48" - 60" Paddle Blinds & Spacers. Spectacle Blinds.
ASME B31.3 Piping Blank Calculations - engineering-stream.com
1) ASME_B31_3_Blank is a software program that can be used to determine the thickness of blanks based on internal pressure. 2) The available pipe sizes vary from 1/2 in to 24 in. 3) A number of carbon steel, stainless steel material grades commonly used for …
This Standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, and testing for operating line blanks in sizes NPS 1⁄2 through NPS 24 for installation between ASME B16.5 flanges in the 150, 300, 600, 900, 1500, and 2500 pressure classes.
ASME B16.48-2015 (Revision of ASME B16.48-2010) Line Blanks AN AMERICAN NATIONAL STANDARD Two Park Avenue • New York, NY • 10016 USA