Continental Trade Sp. z o. o.


Type 320 - PN10/16


The ACI Tank Sight Glass Type 320 is a round tank sight glass to be welded on or into the wall of a pressure vessel. Type 320 is manufactured in full accordance with the construction rules of DIN 28120 and suitable for an operating pressure of PN10 or PN16.

Due to DIN conformity Type 320 can easily be installed as a spare part for existing fittings complying with DIN 28120. Our tank sight glass fulfils all standard conditions including full vacuum compatibility and an operating pressure of up to 16 bar. Operating temperatures of up to 280°C are well within range of type 320. If a mica protection sheet is added, safe Operation at up to 300°C is possible! Of course, you can order matching mica sheets directly with your sight glass!

Expaning upon the definitions of DIN 28120, we can offer Type 320 with special sizing of DN250 and larger, as well as high temperature compatible quartz windows and of course matching gaskets. Although these variants are not listed in the standard documents, design and manufacturing closely follows the regulations provided in DIN 28120 and DIN 7080, so the stated operating conditions can be completely relied upon.

As for all our round tank sight glasses, our type 320 is optionally available with spray nozzles SVI, wipers of type SWI or type SWII (with flexible shaft) or light fixtures with LED or Halogen lights.

You can find additional technical data, detailed descriptions and contact information further down on this page!



Base flange and cover flange:
RSt 37-2, H II, C 22.8, P250GH, P265GH, 1.4306 (F304L), 1.4404 (F316L), 1.4462 Duplex (F51), 14539 (Alloy 904 L), 1.4541 (F321) , 1.4571 (F316Ti) or according to customer specifications

Sight glass: 
borosilicate glass acc. to DIN 7080
Soda-lime glass acc. to DIN 8902

Seal: Klingersil or as desired

Screws: A4-70

according to DIN 28120

Nominal size:
DN25 - DN250

Nominal pressure: 
PN 10/16  (depending on size and material composition)


 - with soda lime glass up to max. 150 ° C
 - with borosilicate glass up to max. 280 ° C 
 - with borosilicate & mica shield up to 320 ° C
Higher operating temperatures on request

Optional versions are possible.

Dimension of Type 320

Special construction/options:
a) With wiper blades SWI or SWII
b) With spray nozzle SV1
c) Double glass
d) Double Glass with heating element
e) With LED or halogen lights, ATEX certification available
f) With protective coating, variant B of DIN 28120
g) With O-Ring seal
h) High Temperature Version with quartz window
i) Impact protection plexiglass shield
j) More special constructions available on request

DN Da Di h1 h2 s kg Nm
25 115 48 16 25 10 2,9 30
40 150 65 16 30 12 5,0 55
50 165 80 16 30 15 6,0 55
80 200 100 20 30 20 10,3 55
100 220 125 22 30 25 11,5 55
125 250 150 25 30 25 15,2 64
150 285 175 30 36 30 23,5 107
200[1] 340 225 35 36 30 30,7 125
250[1] (similar to DIN) 395 280 40 40 45 44,6 107

[1] PN 10 only

Use our 360° 3D view to get a perfect allround look at our product.

Enjoy our animated Video showing the assembly of our tank sight glass Type 320.

Download data sheet:

While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data.

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