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PTFE T-bush for glass lined reactor nozzles showing dimensions A, B, C, D, E and wall thickness
Spacers, Bellows, Strainers & Accessories

PTFE T-Bush for GLR Nozzles

Solid PTFE nozzle bush, NB 2" to 20" and oval

Solid PTFE top-hat bush that protects and seals a glass-lined reactor nozzle — NB 2" to 20" plus two oval sizes, with full A/B/C/D/E dimensions.

Request a quotation Full technical data and dimensions Request the datasheet
At a glance
Product typeSolid PTFE T-bush for glass lined reactor nozzles
Body / steel gradeNone — solid PTFE construction
Lining materialSolid PTFE
Liner standardASTM D 1457
Lining optionsVirgin or anti-static (conductive black) PTFE to ASTM D 4894 & D 4895, PFA to ASTM D 3307, FEP to ASTM D 2116
Flange standardASME/ANSI B16.5
Flange classClass 150 standard; Class 300 on request
Size rangeNB 2" to NB 20", plus oval 12"×16" and 12"×18"

Product overview

What it does, and where it fits.

The nozzle of a glass-lined reactor is where the glass is thinnest and most exposed to mechanical damage. A T-bush is a top-hat shaped PTFE sleeve that lines the nozzle bore and turns out over the flange face, protecting the glass from the bolt load and from anything passing through the nozzle, while sealing the joint.

The catalogue gives full machining dimensions — A across the flange, B and C on the bore, D on the oval sizes, E for depth and TH for wall thickness — across NB 2" to 20" plus two oval sizes, 12"×16" and 12"×18". The bush is machined from solid PTFE to ASTM D 1457.

Features

Built into every unit.

  • Solid PTFE top-hat bush to ASTM D 1457 — no steel body
  • Protects glass-lined reactor nozzles from bolt load and mechanical damage
  • NB 2" to 20" plus oval sizes 12"×16" and 12"×18"
  • Full A/B/C/D/E and wall thickness dimensions published
  • Oval shape available on request

Benefits

Why it earns its place in the line.

  • Protects the most vulnerable part of a glass-lined reactor
  • Seals and lines the nozzle in one solid inert component
  • Outstanding corrosion resistance to aggressive organic and inorganic chemicals across a wide temperature range
  • Non-stick, non-wetting bore — low surface energy keeps product moving and simplifies cleaning
  • Chemically inert and pure; no additives, plasticisers, stabilisers or lubricants to contaminate the process fluid
  • The lowest coefficient of friction of any solid, reducing pressure drop and deposit build-up

Applications & industries

Where it is specified.

Typical applications

  • Glass-lined reactor nozzle protection and sealing
  • Manway and agitator nozzle liners
  • Charging and instrument nozzles on GLR vessels
  • Retrofitting worn or damaged nozzle seals

Industries served

  • Chemical processing
  • Pharmaceutical
  • Petrochemical
  • Oil & gas
  • Power generation
  • Pulp & paper
  • Mining & metallurgy
  • Agrochemicals & dyes

Technical data

Specification for PTFE T-Bush for GLR Nozzles.

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

PTFE T-Bush for GLR Nozzles — technical specification
Product typeSolid PTFE T-bush for glass lined reactor nozzles
Body / steel gradeNone — solid PTFE construction
Lining materialSolid PTFE
Liner standardASTM D 1457
Lining optionsVirgin or anti-static (conductive black) PTFE to ASTM D 4894 & D 4895, PFA to ASTM D 3307, FEP to ASTM D 2116
Flange standardASME/ANSI B16.5
Flange classClass 150 standard; Class 300 on request
Size rangeNB 2" to NB 20", plus oval 12"×16" and 12"×18"
Temperature rangeContinuous service to 260 °C (PTFE melting point 327 °C, PFA 306 °C, FEP 260 °C)
Pressure ratingASME/ANSI B16.5 Class 150 flanges as standard; Class 300 available on request
Manufacturing standardASTM F 1545
Spark testingEvery lined component spark tested at 5000 × E volts (E = liner thickness in mm), to a maximum of 15 000 V
Hydro testingHydrostatic or pneumatic test according to the lining technique; hydrostatic test on components with vent holes
InspectionDimensional and visual examination of liner and steel parts — weld aspect, overall dimensions, collar size, liner thickness, surface flaws and paint thickness
CertificationEN 10204 3.1 mill certificates and FDA certification for the fluoropolymer available on request
Standard versionAll flanges fixed
PTFE T-Bush for GLR Nozzles — machining dimensions and material availability
SizeABCDETHPTFE
2"1025236—396✓
3"1388266—428✓
4"15810386—5010✓
6"212153435—5010✓
8"268203180—5312✓
10"320254230—5312✓
12"370304280—5312✓
16"482404380—6312✓
18"535454430—6312✓
20"610504480—6312✓
12"×16"4754003753006510✓
12"×18"5304504303507512✓

All dimensions in mm, reproduced row for row from the catalogue, which prints “—” in column D for the round sizes and lists no NB 14" row. The C dimension printed for NB 6" (435) does not follow the progression of the surrounding rows — confirm it with us before machining to it.

Available on request

  • Oval shape

FAQ

Questions we are asked about this item.

NB 2", 3", 4", 6", 8", 10", 12", 16", 18" and 20", plus two oval sizes, 12"×16" and 12"×18". The catalogue lists no NB 14" round size.

It applies to the oval sizes only — the catalogue prints a dash against D for every round size.

The catalogue prints 435 mm for that cell, which sits outside the progression of the surrounding rows. We have reproduced it as printed rather than correcting it; please confirm the figure with us before machining.

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

Not sure which spec fits your process?

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

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