Circular Sight Glass Fitting to DIN 28121 or Similar

Used where a product or process has to be observed or controlled inside stirred vessels, tanks, dryers, columns, silos, centrifuges, mixers, evaporators, pipelines.

MOUNTING:

The pre-mounted circular flange assembly is bolted directly onto a welded pad or nozzle.

NOMINAL SIZES:

From DN 40 (with a free view of 48 mm) to DN 200 (with a free view of 150 mm).

OPERATING CONDITIONS:

Nominal pressure ratings of 10 and 25 bar. Vacuum. Temperatures of up to 280°C with borosilicate glass to DIN 7080.

MATERIALS:

Flanges: Stainless steels, boilerplate, Hastelloys and exotic specials

Gasket product side: PTFE enrobed metal gasket ring

Gasket cover side: KLINGERsil C4400

CERTIFICATES:

- To be supplied against extra charge to DIN EN 10204

SPECIAL VERSIONS:

- Double glazed safety version with or without internal heating element to prevent cristallisation or condensation

- Available with lined base flange (typically with PTFE / PFA)

- Glass lined version

- Adaptations to suit ANSI 150 lbs / 300 lbs and other flange fittings

- Special glass qualities, e.g. Sodium silicate to DIN 8902 or Quartz, fused glass and seal qualities on request