Sprache: DeutschSprache: Englisch

Sight Glass Fitting, Circular, Stainless Steel DIN28120

for non-pressurized vessels

Applications

  • For observation of interior of tanks, silos,
    stirred vessels, separators, pipelines etc.
 
  • Sight glass fittings are circular flanged ports
    for welding into or onto a vessel wall.
    The base and the mating flange are screwed
    together tightly, with the sight glass disk and
    an independent gasket to the upper and the lower
    flange respectively positioned between them.

Operating pressure

  • non-pressurized

Operating temperature

  • max. 150°C with sodalime glass DIN 8902
  • max. 280°C with borosilicate glass DIN 7080

Certificates/testing

  • Depending on customer requirements and at
    extra cost, can be provided to
    DIN EN 10204 3.1/3.2

Certifications

  • TÜV-pretested

Advantages
over the standard DIN28120 format:

  • smaller outer diameter and therefore vessel cutout
  • shallower height above weld
  • lower weight
  • easier to clean
  • lower cost

Installation

  • After welding in the base flange into the vessel wall, gaskets, glass sight glass disc and mating flange are carefully laid and bolted together with bolts. Tighten progressively on a diametric cross basis with socket spanner.

Viewing diameter

  • 80 to 225 mm

Possible combinations

  • Can be combined with sight glass luminaires when used in explosion hazardous as well as non explosion hazardous areas. The mating flange is then drilled and tapped to suit luminaire mounting bracket.

parts

materials

base flange

 1.4571

gasket

Klingersil C-4400, silicon,
PTFE or other

sight glass plate

borosilicate glass DIN7081 to 280°C
sodalime glass DIN8902 to 150°C

mating flange

1.4571 or other

bolts

A2-70


size


NW

viewing diameter


sight glass plate


flange


fastening bolts


gaskets

 

DN

d1

d2

s

D

k

h1

h2

no.

threads

d1

d7

1

50

80

100

10

140

120

10

15

4

M6

80

102

2

80

100

125

10

165

145

10

15

8

M6

100

127

3

100

125

150

10

190

170

10

15

8

M6

125

152

4

125

150

175

10

215

195

10

15

8

M6

150

177

5

150

175

200

10

240

220

10

15

8

M6

175

202

6

200

225

250

10

290

270

10

15

8

M6

225

252

7

400

400

425

15

470

445

15

20

16

M8

427

402