What does flange pressure rating mean?
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This post was last edited by Valve Mingming on 2010-10-12 at 18:37. What does flange pressure rating mean? What are the commonly used standards?
Using the pressure rating of the pipeline means the same thing.
Reply 1# poochien: Please take a look at the next document, “HG-T 20592～20635-2009 Steel Pipe Flanges, Gaskets, and Fasteners”
The pressure rating of a flange is related to the design pressure, but they are not identical. It represents a strength series for flanges. The higher the pressure rating, the stronger it is. To be precise, given the materials, design temperature, and design pressure, we can use the temperature and pressure curves specified in the flange standards to select a pressure class for a certain type of pipeline in a process unit, and thereby determine the pressure classes for valves and other pipe fittings as well. Pressure ratings can be classified into European systems, American systems, etc., depending on the flange standard system, such as PN1.6, PN2.5, or CL150/PN2.0. When it comes to heat, some standards combine the two.
It has the same meaning as the pipe pressure rating, indicating the maximum pressure that can be tolerated; in some cases, the pressure rating of process flanges is one level higher than that of the pipes
Commonly used resolutions are 1.0Mp, 1.6Mp, 2.5Mp, 4.0Mp, 6.3Mp, and 10Mp. \"HG-T 20592～20635-2009 Steel Pipe Flanges, Gaskets, and Fasteners\" – You can find a hardware manual; it contains all the relevant information
PN series: “GB1048-2005 Pipe Fittings – Definition and Selection of Nominal Pressure”. The PN values should be selected from the following series: DIN series, ANSI DIN series – 1PN, 2.5PN, 20; 2PN, 6PN, 50; 3PN, 10PN, 110; 4PN, 16PN, 150; 5PN, 25PN, 160; 6PN, 40PN, 420; 7PN, 63; 8PN, 100; 9. “Definition and Selection of DN (Nominal Size) for Pipe Fittings – GB/T 1047—2005” (GB/T 1047—2005 replaces GB/T 1047¬—1995). 1 Scope: This standard specifies the definition and series of DN (nominal size). This standard applies to pipe components specified in relevant standards that use the DN designation. Note: Other identification size methods different from those specified in this standard can also be used; for example, pipe components made by threading, press-fitting, socket welding, or butt welding can be identified using terms such as NPS (Nominal Pipe Size), OD (Outer Diameter), ID (Inner Diameter), or G (Pipe Thread Size Designation). 2. Define DN: A dimensional identifier that is a combination of letters and numbers used for pipeline system components. It consists of the letters DN followed by a dimensionless integer. This value is directly related to characteristic dimensions such as the bore diameter or outer diameter of the end fitting (expressed in mm). Note 1: Unless otherwise specified in the relevant standards, the digits following the letter DN do not represent measurement values and cannot be used for calculation purposes. Note 2: For those standards that use the DN designation system, the relationship between DN and the dimensions of the pipe components should be specified, such as DN/OD or DN/ID. 1234 1DN 6DN 100DN 700DN 2200 2DN 8DN 125DN 800DN 2400 3DN 10DN 150DN 900DN 2600 4DN 15DN 200DN 1000DN 2800 5DN 20DN 250DN 1100DN 3000 6DN 25DN 300DN 1200DN 3200 7DN 32DN 350DN 1400DN 3400 8DN 40DN 400DN 1500DN 3600 9DN 50DN 450DN 1600DN 3800 10DN 65DN 500DN 1800DN 4000 11DN 80DN 600DN 2000