Right Angle Sight Glass (90° Sight Window)

Right angle sight glass (90° sight window) for pipelines and vessels. Flanged & weld-in options, borosilicate or tempered glass, custom sizes & datasheet.

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Description

Right-angle sight glass provides a 90° viewing window that lets operators inspect flow, level, and clarity at corners, elbows,s and compact installations. Designed for tight spaces, our right-angle sight windows pair a precision glass element with robust flanged or weld-in housings for safe, long-term service.

Key benefits


  • 90° field of view: Inspect flow or liquid level at right-angle pipe runs and compact layouts.
  • Compact footprint: Fits tight installations where inline windows won’t work.
  • Multiple mounting options: Flanged, weld-in pad, or threaded housings to match your connection.
  • Material choices: Soda-lime (economy), borosilicate (thermal/chemical), tempered or quartz (high temp/abrasion).
  • Custom sizes: Made to match your bolt pattern, glass dimension, and pressure rating.

Typical specifications

 

Right angle sight glass (90° sight window)— Specifications

Product Right-angle sight glass (90° sight window)
Working pressure up to 40 bar
Working temperature 150°C or 280°C
Installation Pay attention to the flow direction
Standard sizes Ø20–Ø300 mm discs; tubes & panes to customer dimensions
Options
  • ANSl flanges
  • With other lengths
  • With different connection nominal diameters
  • With welds
  • With sight glass lights
  • With a safety seal according to Lumistar type 885
  • Or according to customer requirements
Certificate Acc. to EN 10204 – 2.2 or 3.1

Need custom dimensions or a datasheet? Contact us for a quote.

Applications


Use right angle sight windows for pump discharge monitoring, elbow inspection on long pipe runs, compact level checks in tanks near obstructions, and OEM equipment where space is limited.

Downloads

FAQ


1. When should I use a right angle sight glass?
When an inline sight glass is impractical due to layout (corners, elbows, compact equipment), and you need a reliable 90° view of flow or level.
2. Can you match existing bolt patterns?
Yes. Provide the bolt circle and hole details; we will machine the housing or supply a compatible gasket and flange match.
3. Do right angle sight glasses support pressure service?
Yes — pressure rating depends on housing design and glass thickness. Provide operating P/T, and we will recommend materials and thicknesses.