LIGHT WEIGHT VERSION0 pages

R

Circular sightglasses for welding
into or onto vessel walls, in version PN 0 / PN 2,5 with a viewing diameter equal to DIN 28120
Application:
The circular sightglass fittings are used for the observation and illumination of the
inside of unpressurised vessels, silos, tanks etc. or such of a nominal pressure
(PN) of 2,5 bar.
They represent, especially for large nominal diameters, a cost-saving alternative
to the sightglasses of the pressure rates 6, 10 and 16 bar.
Viewing diameter:
80 - 225 mm
Operating conditions:
Pressure:t
No pressure (PN 0) resp. PN 2,5
Temperatures:t
Max. 150 °C with glass disc in sodium silicate to DIN 8902
tt
Max. 280 °C with glass disc in borosilicate to DIN 7080
Materials:
Base flange:t

Circular sightglass, DN 150, PN 0, with glass disc in
sodium silicate to DIN 8902 and wiper of the series
W, wiper blade in silicone

1.4571 (AISI 316 Ti) (standard PN 0) / 1.4404 (AISI 316 L)
(standard PN 2,5)
ttt
1.4541 (AISI 321), RSt 37-2, H II or other materials on demand
Cover flange:t 1.4301 (AISI 304) (standard PN 0) / 1.4541 (AISI 321)
ttt
(standard PN 2,5)
ttt
1.4404 (AISI 316 L), 1.4571 (AISI 316 Ti), RSt 37-2, H II or other
materials on demand
Sightglass disc:t Sodium silicate glass to DIN 8902 (standard)
ttt
Borosilicate glass to DIN 7080 on demand
Gaskets:t
KLINGERsil C4400, PTFE, Perbunan, Silicon, Viton, Gylon or
other materials on demand
Screws / studst A2-70 (standard)
and nuts:t
A4-70 or 5.6 zinked on demandt
Possible combinations:
The sightglasses can be combined with our centrally operated window wipers of
the series W / WD / WDT, with the spraying devices of the series SVS (only version
for PN 2,5) as well as with our sightglass light fittings of the series CHEMLUX®,
EdelLUX®, miniLUX® or fibroLUX® for use in hazardous or safe areas. In these
cases, the cover flanges are drilled and tapped to suit the respective light fitting
fixation.

Circular sightglass similar to DIN 28120, DN 150, PN
2,5, with glass disc in sodium silicate to DIN 8902

Special versions:
t Special high vacuum-tight version with additional O-ring seal
t Glass disc in quartz and special gaskets for very high operating temperatures

•
•

Contents of delivery:
The complete delivery consists of base and cover flanges, glass disc, gaskets
for product and cover side and hexagonal socket head screws (version for PN 0)
resp. studs and nuts (version for PN 2,5).
Certificates:
On request against extra charge, to DIN 50049, 3.1(B), alternatively 3.1A for the
flanges, 2.2 or 3.1 for the glass discs.

Your reliable and efficient partner in sightglasses.
Perfect, thoroughly engineered solutions from one hand !
Always an interesting, technically advanced idea ahead !