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ISO-aligned QC · Borosilicate 3.3 · Pan India supply network
Mild steel allen key tubular sight flow indicator with PTFE T-bush and borosilicate glass tube
Tubular Sight Flow Indicators

MS Allen Key with T-Bush Tubular Sight Flow Indicator

Mild steel allen key with PTFE T-bush, 15NB to 400NB

Mild steel allen key tubular sight flow indicator with PTFE T-bushes — corrosion-resistant wetted path on an economical mild steel frame. 15NB to 400NB.

Request a quotation Full technical data and dimensions Request the datasheet
At a glance
Product typeAllen key with T-bush tubular sight flow indicator
Flange materialMS, 2 off
T-bushPTFE, 2 off
Glass tubeBorosilicate 3.3, 1 off
GasketPTFE, 4 off
Tie rodG.I.
FastenersG.I.
Safety shieldPolycarbonate / acrylic, provided on request

Product overview

What it does, and where it fits.

This is the mild steel version of the T-bush design. The PTFE bushes still isolate the flanges from the fluid, so the wetted path remains PTFE and borosilicate glass, but the flange metal, tie rods and fasteners are mild steel and G.I.

For corrosive media in an environment that does not attack the outside of the unit, that is the most economical way to a fully fluoropolymer wetted path. An acrylic protection tube gives additional safety and a toughened glass tube is available on request.

Features

Built into every unit.

  • PTFE T-bushes give a PTFE and glass wetted path on a mild steel frame
  • Additional safety by acrylic protection tube
  • Toughened glass tube available on request
  • Easy installation in horizontal and vertical lines
  • Easy cleaning and maintenance

Benefits

Why it earns its place in the line.

  • Most economical route to a full fluoropolymer wetted path
  • Site-replaceable T-bush and glass tube
  • 360° visibility over the whole length — sees what a two-window unit misses
  • Glass tube and gaskets replaceable on site without cutting the pipework
  • Short face to face across the size range makes retrofit straightforward

Applications & industries

Where it is specified.

Typical applications

  • Corrosive media where the external environment is benign
  • Budget-constrained corrosive service
  • Watching for settling solids, stratification or a moving interface
  • Confirming complete drainage of a line before maintenance

Industries served

  • Chemical processing
  • Pharmaceutical
  • Dairy & food
  • Water & effluent treatment
  • Agrochemicals
  • Paper & bleaching
  • Petrochemical
  • Distillation & solvent recovery

Technical data

Specification for MS Allen Key with T-Bush Tubular Sight Flow Indicator.

Figures below are for this product only — every item in the range carries its own dimension table.

MS Allen Key with T-Bush Tubular Sight Flow Indicator — technical specification
Product typeAllen key with T-bush tubular sight flow indicator
Flange materialMS, 2 off
T-bushPTFE, 2 off
Glass tubeBorosilicate 3.3, 1 off
GasketPTFE, 4 off
Tie rodG.I.
FastenersG.I.
Safety shieldPolycarbonate / acrylic, provided on request
Size range15NB to 400NB
Face to face185 mm to 215 mm, tolerance ±3 mm
Wetted partsPTFE and borosilicate glass only
Flange standardANSI B-16.5; BS-10 Table E, BS-10 Table F and PN 10 also available
MS Allen Key with T-Bush Tubular Sight Flow Indicator — dimensional table
SizeOD (±3)PCDH (No.)H dia.L (±3)
15NB9060416185
20NB10070416185
25NB10879416185
40NB12798416185
50NB152121419185
65NB180140419185
80NB191152419185
100NB229191819185
150NB279241822185
200NB343298822195
250NB4063621225200
300NB4834321225205
350NB5334761229210
400NB5975401629215

All dimensions in mm. Flange drilling to ANSI B-16.5; BS-10 Table E, BS-10 Table F and PN 10 drilling are also available — see the flange standards table.

Material specification
No.DescriptionQty.Material
1Flange2MS
2T-bush2PTFE
3Gasket4PTFE
4Glass tube1Borosilicate 3.3
5Tie rod—G.I.
6Fasteners—G.I.
7Safety shield*1Polycarbonate / acrylic

Available on request

  • Acrylic protection tube
  • Toughened glass tube
  • Safety shield on request
  • Different flange standards

Exploded view

Every part, in assembly order.

Item numbers match the material specification table above.

Exploded assembly view of the MS Allen Key with T-Bush Tubular Sight Flow Indicator showing numbered components

FAQ

Questions we are asked about this item.

Yes — PTFE bushes and gaskets with a borosilicate 3.3 tube in both. The difference is the flange, tie rod and fastener metal, which is not in contact with the fluid.

An acrylic protection tube is available for additional safety, and a polycarbonate or acrylic safety shield is provided on request.

Enquiry

Tell us your line size — we'll confirm the spec.

Send the bore, the media, the temperature and pressure, and the flange standard you work to. Drawings and custom sizes welcome.

Enquire on WhatsAppChat to us on +91 90336 30547 Request the datasheetWe will email the drawing for this item Talk to a technical expertMaterial selection and duty review Send a drawingWe fabricate to your isometric or sketch Request a custom sizeNon-standard bores, lengths and drilling

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Send your requirement — media, temperature, pressure, dimensions — and we'll recommend the right product or fabricate it.

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