330 EN Rectangular Sight Glass For welding

Rectangular Sight Glass
Level indicator
For welding
Operating pressure:16 or 35 bar

For visual observation of fluid levels in vessels, boilers and silos.

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Flange: S235JRG2, 1.4571
Glass: Borosilicate glass DIN 7081, Soda Lime Glass DIN 8902, (Reflex or Transparent)
Seal: C4400, Graphite, PTFE, NBR, Viton

Other materials on request

Installation guideline:
After welding the base flange onto/into the pressure vessel, the sealing surface must be checked for deformations! Reworking may be required!

The operating pressure does not relate to the base flange! The base flange must be audited according to AD 2000 guidelines together with the pressure vessel!

ACI Type 330
220 mm
Flange 1.4571
Borosilicate glass transparent          11-330-220-2-1-1-000
Standard construction

For aggressive media or steam, we recommend adding mica disks to protect the glass.

Old type:
Similar to "EB220"


Nominal diameter
Pressure rating PN16, PN35
Sight glass body 1.4571/1.4571, 1.4571/S235JRG2, S235JRG2
Process Connection Weld-on, Weld-in
Shape Rectangular Sight Glasses
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