Continental Trade Sp. z o. o.


Tubular flow sight glass type 650

Tubular flow sight glass type 650


Tubular flow sight glass to be mounted on DIN 11851 piping. Tubular sight glasses of type 640 are suitable for installation in DIN 11851 piping and suitable for up to 10 bars of operating pressure. Apart of connection itself, sight glasses are without liquid traps.

The flanges are clamped together using threaded rods. Rods also supports the flanges longitudinally to prevent excessive force on the glass tube, ensuring a long service life of the device.

The ACI tubular sight glass with connections to DIN 11851 Type 650 is based on our proven type 620, but is intended for installation with milk tube fittings in various variants. The fittings are available in four variants:

  • version A - with external and internal threads,
  • version B - with both external threads,
  • version C - with both internal threads,
  • version D - without threads (for welding).

The type 640 can operate at pressures up to 10 bar. It is available for flanges from DN10 to DN150.

The sight glasses are without liquid traps if correctly installed.

Technical data


1.4404 or 1.4301/7

borosilicate glass 3.3

Viton, PTFE, EPDM, graphite or according to agreement.

impact protection jacket or grid impact protection

Flow-through tubular sight glass with connections on both sides according to DIN 11851 for installation in pipelines.

Nominal size:
DN10 to DN150

Nominal pressure:
see data sheet

max. 120°C depending on gasket

Optional versions are possible.

Take advantage of our 360 degree 3D view for a perfect all-round view of our product.

Watch our animation video, here you can see the structure of our flow sight glass type 650 perfectly

Download data sheet:

While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data.

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