Rupture disc assembly

Bursting disc assembly. An insert-type stainless holder (inlet and outlet halves with cap screws and seal) is centred inside the bolt circle between two weld-neck flanges. It holds a reverse-acting domed disc, convex towards the process. A stamped disc tag sticks up between the flanges with the tag number, burst pressure and flow direction. A burst-indicator sensor has an Ex connector, gland and field cable tail. Port A (holder inlet) is process and port B (holder outlet) is relief.

ISO 4126-2ASME VIII UG-127API 520 Part IASME B16.5
Drag to orbit, scroll to zoom
Parameters
– barg

Installation

$npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add rupture-disc

Copies piping/rupture-disc.tsx and the shared lib/ into src/components/deck-twin/. Needs three, @react-three/fiber and @react-three/drei. See installation for the manual route.

Usage

import { Canvas } from '@react-three/fiber'
import { OrbitControls } from '@react-three/drei'
import { Stage } from './components/deck-twin/lib/stage'
import { RuptureDisc } from './components/deck-twin/piping/rupture-disc'

export default function Scene() {
  return (
    <Canvas shadows camera={{ position: [8, 5, 9], fov: 35 }}>
      <Stage>
        <RuptureDisc />
      </Stage>
      <OrbitControls makeDefault />
    </Canvas>
  )
}

Props

PropTypeDefaultRange
npsnumber (NPS, in)null
rating150 | 300 | 600 | 900 | 1500 | 2500null
burstnumber (barg)null1 – 400
flangesbooleannull
indicatorbooleannull
tagstringnull
...groupposition, rotation, scale…

P&ID

P&ID symbol for rupture-disc

A curved disc (arc) between two flange bars across the relief line, usually vertical with the inlet below, tagged PSE with the burst pressure; often fitted under a PSV with a pressure gauge or switch between them.

tag RDtag BDISA PSEISA PIISA PSHISO 10628-2 / PIP PIC001 / ISA 5.1 (PSE)

An arc between flange bars with no spring = rupture disc; a spring zig-zag = PSV. A disc under a PSV forms a combination device; the PI / PSH in the space between detects a leak or burst.

Rupture disc datasheet (ISO 4126-2 / API 520 Part I) fields and the props they set
Nominal sizenps
Flange ratingrating
Burst pressureburst
Holder with flangesflanges
Burst indicatorindicator
Tag numbertag

Typical suppliers

Fike · Continental Disc. The geometry is generic and sized from public standards. It is not vendor CAD.

For agents

Machine-readable entry with props, ranges, defaults and ports:

$npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info rupture-disc

Or fetch /r/rupture-disc.json, or copy a ready-made instruction:

Add the Deck Twin "Rupture disc assembly" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add rupture-disc` (it copies the file and the shared lib into src/components/deck-twin/), then `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info rupture-disc` for its props, ranges and ports. Render <RuptureDisc /> inside a React Three Fiber <Canvas shadows>, wrapped in <Stage> from src/components/deck-twin/lib/stage. Set props from my data (metres, NPS in inches, ASME class) and leave the rest at defaults. Install three, @react-three/fiber, @react-three/drei and @types/three if they're missing. Full guide: https://decktwin.com/skill/SKILL.md