GD100 Flanged sight glass

Stainless steel sightglass for universal use

Sight Glass For The Pipeline

A sight glass in the pipeline allows the monitoring and estimation of color, rate of flow, viscosity, or pollution of the medium. The presented sight glass GD100 is our standard sight glass and due to the use of stainless steel, high-strength glass, and PTFE-sealing it is suited for a lot of different applications: petrochemistry, wastewater, and the food industry as well. For the specifications of our GD100 have a look at the column on the right. Let our sales department help you to find the fitting sight glass for your operation. In order to meet these specific requirements, we have sight glasses with most different designs in stock. FERGO offers a comprehensive product range, ranging from single materials (like cast iron, steel, or stainless steel) via various connection possibilities (DIN- or ANSI- flange or socket screw thread) to optimal accessories – like for example light or a rotor for gases. Of course, we can also deliver sight glasses (according to DIN 28120) for containers and tanks.

Flanged & threaded sight glass

Flanged sight glass type GD100-SSTXF (Art.-Nr.: 350-1001-xx)

  • Body: 1.4408
  • Glass: tempered glass
  • Flanges DIN 2501 PN10 & PN16
  • Face to face according to DIN 3202 F1
  • Gasket: PTFE

Threaded sight glass type GD100-SSTXI (Art.-Nr.: 350-1000-xx)

  • 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″
  • Thread ends F-F acc. to ISO 7-1 (EN 10226-1)
  • Body: 1.4408 (CF8M), shot blasted
  • Glass: tempered soda-lime glass
  • Gasket: PTFE




DN15, DN20, DN25, DN32, DN40, DN50, 1/2", 3/4", 1", 1 1/4", 1 1/2", 2"

Flange connection

PN10, PN16

Body material


Pressure range

PN16, PN10






DIN 2999, ISO 7/1

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