Type 320- PN 10/16 | tank sight glass | ACI Industriearmaturen GmbH

Circular Sight Glass Fittings Type 320 - PN10/16

According to DIN 28120

Tank Sight Glass Type 320 PN 10/16

Our round tank sight glasses type 320 are welded onto or into a vessel wall to allow observation or illumination of the inside of the vessel. ACI tank sight glasses type 320 are designed according to DIN 28120 and can easily be used as a replacement part for already existing fittings according to DIN 28120. A sight glass made of chemically highly resistant borosilicate glass DIN 7080 (or similar) is clamped between two high-quality stainless steel flanges and proven quality seals. Our tank sight glass meets all standard operating conditions such as resistance to vacuum and an operating pressure of up to 16 bar(g).

Exploded_view_type_320_with_labelling_of_the_individual_parts

Beyond the definitions of DIN 28120, we also offer the Type 320 in special sizes of DN 250 and higher. These sizes, which are not specified in the standard, are also designed in full conformity with DIN 28120 and DIN 7080 (or similar), so that even in such special cases it is possible to utilise the application limits according to the standard.

Our tank sight glasses type 320 are made of the high-quality stainless steel 1.4571 (316Ti), which our customers have appreciated for years. The glass material used is borosilicate glass 3.3 according to DIN 7080 (or similar), which has proven itself in the industry. The sealing of the fitting is done with flat gaskets adapted to your needs from an extensive range of materials, which offers not only the widely used fibre gaskets but also more demanding materials such as PTFE (Teflon®), NBR, graphite and many branded gaskets.

If the maximum operating temperature of 280°C does not meet your requirements, or if the process conditions pose a problem even for the highly resistant borosilicate glass, an FEP or mica protective screen specially adapted to the fitting offers additional protection against steam and aggressive chemicals, such as alkalis up to a pH value of 14.

Like other of our sightglass fittings, our type 320 can be optionally equipped with SV1 spray devices, SGW or SWII type wipers (with flexible shaft) or lights.

More technical details about our tank sight glass type 320 according to DIN 28120 can be found further down this page!

Technical details

Flange material:

  • Base flange:
    1.4571 (factory standard)
  • Cover flange:
    1.4571 (factory standard)
  • Other materials on request ¹

Shape:

  • according to DIN 28120

Temperature:

  • up to 280 °C with borosilicate glass
    according or similar to DIN 7080
  • up to 150 °C with soda-lime glass
    according or similar to DIN 8902
  • up to 400 °C with untempered borosilcate glass

Sight glass:

  • Boroslicate glass DIN 7080 or similar
  • Borosilcate glass untempered 

Nominal size:

  • DN 25 up to DN 300
  • DN 200 / DN 300 similar to 
    DIN 28120

Options:

  • Wiper SGW with PTFE or silicone wiper blade
  • LED lights for EX- and Non-EX-areas
  • Spray device SVI
  • O-ring-gasket (for vacuum applications²)
  • PLEXIGLAS® - impact protection
  • VA-perforated plate - impact protection
  • FEP protective screen (for higher pH-values)
  • Double glazing (320D)
  • special desgins are possible 

Gaskets:

  • KlingerSil® C4400
  • PTFE, FKM, NBR, Silikon, EPDM
  • Graphit 
  • or according to customer requirements

Nominal pressure:

  • PN 10 / 16

Screws:

  • A4-70
²depending on environmental variables

¹ Optional materials:

1.0460 / 1.4301 / 1.4307 (F304L) / 1.4404 (F316L) / 1.4410 (Super Duplex) / 1.4435 (F316L) / 1.4462 (F 51) / 1.4529 (Alloy 926) / 1.4539 (Alloy 904L) / 1.4541 (F321) / 1.4547 (F44) / 1.4550 (F347) / 1.4571 (316Ti) / 1.4828 / 1.4841 / 1.4876 ( Alloy 800H) / 1.4878 / 1.7335 / 2.4068 (Alloy 201) / 2.4360 (Alloy 400) / 2.4375 (Alloy K500) / 2.4602 (Alloy C-22) / 2.4605 (Alloy 59) / 2.4610 (Alloy C-4) / 2.4816 (Alloy 600) / 2.4819 (Alloy C-276) / 2.4856 (Alloy 625) / 2.4858 (Alloy 825) / 3.7035 (Titan)

Section_view_type_320
DN 25 40 50 80 100 125 150 200 250 300
Da [mm] 115 150 165 200 220 250 285 340 395 445
Di [mm] 48 65 80 100 125 150 175 225 280 325
h1 [mm] 16 16 16 20 22 25 30 35 40 45
h2 [mm] 25 30 30 30 30 30 36 36 40 45
Glass-Ø [mm] 63 80 100 125 150 175 200 250 300 355
s (PN10) [mm] 10 10 12 15 20 20 25 30 45 60
s (PN16) [mm] 10 12 15 20 25 25 30 - - -
Weight [kg] (PN16) 2,8 5,4 6 9,7 11,3 14,6 22,4 30,7 44,7 62,5


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Type 320- PN 10/16 | tank sight glass
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