Reducer

Butt-welding concentric or eccentric reducer (flat on top or bottom) with a smooth cone between short straight ends. End-to-end length from ASME B16.9 for the large end; B16.25 weld bevels or welded weld-neck flanges. Port A is the large end on the axis; for eccentric reducers port B is offset by the radius difference.

Installation

Copies piping/reducer.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 { Reducer } from './components/deck-twin/piping/reducer'

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

Props

P&ID

A trapezoid in the line, the large end facing the larger pipe, with the two sizes written beside it (e.g. 8"×6"). Eccentric reducers have one flat side, noted FOT (flat on top) or FOB (flat on bottom).

ISO 10628-2 / PIP PIC001 (piping)

A size change at a valve or pump nozzle is often shown only by the size note. Eccentric FOT reducers sit on pump suctions.

Piping class / isometric bill of materials (ASME B16.9) fields and the props they set

Large end sizenps

Small end sizesmallNps

Wall scheduleschedule

Type (concentric / eccentric)kind

Flat sideflat

End connectionends

Flange ratingrating

Service codeservice

Typical suppliers

Weldbend. 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:

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

Add the Deck Twin "Reducer" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add reducer` (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 reducer` for its props, ranges and ports. Render <Reducer /> 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