Library › Hardware › Stirling & thermoacoustic ·

2 in × 6 in spool with three 1/4 NPT bosses at mid-length

How do I put gauge, fill and relief ports on a tri-clamp spool? · Hardware · basis: Stock 2 in × 6 in spool; 1/4 NPT per ASME B1.20.1; boss size and positions are design values

Long Earth Society build part. The bounce space of my horizontal gamma. The engines

Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features

sizes
3 in table

Notes

  • A standard 2 in × 6 in spool with three welded 1/4 NPT bosses round its middle: fill valve, pressure gauge and relief valve on one charged space.
  • On the horizontal gamma it is the bounce space behind the power piston: about 0.37 L that holds the mean charge so the piston only works against the cycle's swing.

Sizes

featurevalue
length152.4 face to face
bosses3 × 1/4 NPT at mid-length, 90° / 30° / 150°
bossØ22 to r 36, tap drill Ø11.1 × 12, Ø6 on

Mating features

Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.

featureexactmates withfitfiles
facesISO 2852 2 in, 152.4 face to faceType B gaskets, 2 in clampsclampall
NPT bosses3 × 1/4-18 NPT, tap drill Ø11.1 × 12, Ø6 throughfill valve, gauge, relief valve (1/4 NPT male)designedall

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

ISO (via iTeh sample)ISO 2852 clamp liners: face profile and flange / groove diametersPDFstandard excerpt; dimensions are facts
ASMEBPE Bioprocessing Equipment (clamp fitting dimensions, tube OD and wall)standardASME; dimensions are facts verify
ASMEASME B1.20.1 Pipe Threads, General Purpose, Inch (NPT): 1/4-18 major Ø13.72, tap drill 7/16 in (11.1), L2 10.2standardASME; dimensions are facts verify
Long Earth SocietyEngine buildsweb, videoLES site

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

spool-2in-6in-3x-npt142 in × 6 in (152.4) spool, ISO 2852 faces, stock bore, three 1/4 NPT bosses at mid-length (90°, 30°, 150° from +X; Ø22 out to r 36, tap drill Ø11.1 × 12, Ø6 through the wall)STEP · STL

Plain text: sheet.txt · JSON: /api/geometry?object=tri-clamp-spool-npt-bosses

2 in × 6 in spool with three 1/4 NPT bosses at mid-length, isometric render of a generated part
Render of spool-2in-6in-3x-npt14 from the free STEP; not to scale.

You might also need

Questions

Which port is which?

Top: fill valve. The two at 30° and 150°: gauge and relief.