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circular sight glass fittings DIN 28121

PN 10/25

sight glass fittings DIN 28121

Applications

  • For viewing of internals of pressure vessels, tanks,
    silos, stirred vessels, separators pipelines etc.

Connecting sizes

  • PN 10, DN 40 to DN 200

Operating conditions

  • pressure:
    10 bar or 25 bar; vacuum
  • temperature:
    max. 200°C with borosilicate glass DIN 7080
  • higher temperatures on request
Certificates/testing
  • Depending on customer requirements and at extra cost, can be provided to DIN EN 10204 3.1/3.2
 

 Possible combinations

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

Information

  • Sight glass fittings acc. to DIN 28121 are circular flanged ports that are fastened to welding neck flanges, block flanges or similar by means of bolts.
    The fitting is mechanically pre-tensioned as a unit. The structure and dimensions comply with the design standards set out in DIN 28121.

 

parts

materials

base flange

 

form C:

form F:

form V13:

boiler plate H II to DIN17155

stainless steel 1.4571 to DIN17440 or other

sealing rib to DIN2526

tonque to DIN2512

male socket to DIN2513

gasket

PTFE envelope resilient gasket with corrugated support ring

sight glass disc

borosilicate glass DIN 7080 to 280°C
METAGLAS® DIN 7079
sodalime glass DIN 8902

fastening bolts

4.6 respectively A4-70

NW

 

 

sight glass plate

flange

 

fastening bolts

gaskets

DN

PN

d1

d3

S

D

k

h3

no.

threads

d9

d1

d10

40

10/25

48

63

10/12

150

110

36/38

4

M16

18

48

65

50

10/25

65

80

12/15

165

125

38/41

4

M16

18

65

82

80

10/25

80

100

15/20

200

160

46/50

8

M16

18

80

102

100

10/25

100

125

15/25

220/235

180/190

46/59

8

M16/20

18/22

100

127

125

10/25

125

150

20/30

250/270

210/220

54/66

8

M16/24

18/26

125

152

150

10/25

125

150

20/30

285/300

240/250

54/66

8

M20/24

22/26

125

152

200

10/25

125

175

20/30

340/360

295/310

54/66

8/12

M20/24

22/26

150

177