Bleed Ring

on . Posted in Pipe Fitting

Tags: Pipe Fitting Pipe Flange Valve

A bleed ring is a ring section with one or more radial pipe connections designed to fit between standard flanges within the bolt circle, using conventional gasket material.  The ring normally comes with a 3/4" tapped or 1/2" socket weld for connecting with valves and instruments.  The face of the ring can also be made to matched with any flange type.  A bleed ring has different sizes based on the ANSI flange rating of the process piping.

A bleed ring can be used instead of an orifice flange union.  It is easier to install and cheaper than installing orifice flanges, especially in a brown field application.  It comes in many different materials such as carbon steel, stainless steel, PVC, ect., depending on the use.  They provide a convenient way of draining piping, taking samples, attaching instruments or even bleeding of a valve.  When used with a valve and blind flange, it allows you to relieve the pressure if your valve is leaking before you remove the flange.




Bleed Ring Standards

  • ASME Standards
    • ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
    • ASME B16.20 - Metallic Gaskets for Pipe Flanges: Ring-Joint, Spiral-Wound, and Jacketed
    • ASME B16.47 - Large Diameter Steel Flanges: NPS 26 Through NPS 60 Metric/Inch Standard
    • ASME B16.48 - Line Blanks




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Tags: Pipe Fitting Pipe Flange Valve