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ISO-aligned QC · Borosilicate 3.3 · Pan India supply network
Polypropylene double window sight flow indicator with light weight PP body and two glass windows
Double Window Sight Flow Indicators

PP Double Window Sight Flow Indicator

Polypropylene double window, 25NB to 150NB

Polypropylene bodied double window sight flow indicator — light, corrosion resistant and economical for aggressive aqueous service. 25NB to 150NB.

Request a quotation Full technical data and dimensions Request the datasheet
At a glance
Product typePP double window sight flow indicator
Body materialPP
ConnectorsPP, 2 off
GlassToughened borosilicate 3.3 or soda lime, 2 off
GasketSilicone, 4 off
FastenersA2 / CF8
Size range25NB to 150NB
Face to face183 mm to 320 mm, tolerance ±3 mm

Product overview

What it does, and where it fits.

A polypropylene body resists many aqueous acids, alkalis and salts that attack steel, at a fraction of the weight and cost of a lined or stainless unit. For water treatment, plating, effluent and dosing duties that is often the most sensible specification.

The body and connectors are PP, the windows are toughened borosilicate 3.3 or soda lime, and the gaskets are silicone rather than the PTFE used elsewhere in the range. Sizes run 25NB to 150NB with face to face from 183 mm to 320 mm.

Features

Built into every unit.

  • Polypropylene body and connectors — light and corrosion resistant
  • Two toughened borosilicate 3.3 or soda lime windows
  • Silicone gaskets
  • 25NB to 150NB, face to face 183 mm to 320 mm
  • Special sizes on request

Benefits

Why it earns its place in the line.

  • Strong and durable design at low weight
  • Ideal for corrosive aqueous conditions
  • Light weight construction simplifies support and installation
  • Substantially cheaper than a lined or stainless unit

Applications & industries

Where it is specified.

Typical applications

  • Water and effluent treatment lines
  • Plating and surface treatment chemicals
  • Chemical dosing and dilution skids
  • Confirming that a line is actually flowing
  • Watching for colour change, cloudiness or phase separation

Industries served

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

Technical data

Specification for PP Double Window Sight Flow Indicator.

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

PP Double Window Sight Flow Indicator — technical specification
Product typePP double window sight flow indicator
Body materialPP
ConnectorsPP, 2 off
GlassToughened borosilicate 3.3 or soda lime, 2 off
GasketSilicone, 4 off
FastenersA2 / CF8
Size range25NB to 150NB
Face to face183 mm to 320 mm, tolerance ±3 mm
Flange standardANSI B-16.5; BS-10 Table E, BS-10 Table F and PN 10 also available
PP Double Window Sight Flow Indicator — dimensional table
SizeOD (±3)PCDH (No.)H dia.L (±3)
25NB10879416183
40NB12798416190
50NB152121419213
80NB191152419245
100NB229191819260
150NB279241822320

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
1Body1PP
2Toughened glass2Borosilicate 3.3 / soda lime
3Gasket4Silicone
4Connectors2PP
5Fasteners—A2/CF8

Available on request

  • Special sizes 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 PP Double Window Sight Flow Indicator showing numbered components

FAQ

Questions we are asked about this item.

Silicone suits the PP body and the aqueous duties this model is intended for. The rest of the range uses PTFE. If your medium needs PTFE, tell us and we will advise a different model.

150NB. Above that the range moves to metallic and lined bodies.

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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