Type 330 - Rectangular Tank sight glass | ACI Industriearmaturen GmbH

Rectangular Sight Glass Type 330 - PN 16 / 40

Longitudinal sight glass für level indication

Rectangular Sight Glass Type 330 - PN 16 / 40

The ACI tank level indicator Type 330 is used to observe the liquid level inside closed containers (vessels, tanks, silos, etc.) The Type 330 sightglasses are rectangular longitudinal sightglasses for welding into or onto container walls. They are completed with a sight glass plate made of borosilicate glass according to DIN 7081 or similar, inserted between the gaskets and screwed tight.

Lloyd´s Register design appraisal

with Lloyd´s Register design appraisal

Our type 330 tank sight glasses are made of the high-quality stainless steel 1.4571 (316Ti) that our customers have appreciated for years. Like most of our fittings, the type 330 is also available in a variety of materials on request.

The fitting is sealed with flat gaskets adapted to your requirements from an extensive range of materials. In addition to the widely used fiber gaskets (e.g. KLINGERSIL® C-4400), PTFE (Garlock GYLON®, Frenzelit novaflon®), NBR, graphite (e.g. Frenzelit novaphit®) and many other branded gaskets are available for special applications.

You can find more information about gasket materials in our Help Center.

Exploded_view_type_330_with_labelling_of_the_individual_parts

For dark media, dark or not illuminated vessels, the use of a reflective sight glass according to DIN 7081 or similar is recommended.
Due to the refraction of light in the incorporated prisms, the fill level can be better recognised. However, if the container is illuminated, the medium is very clear or the colour of the medium should be visible, a transparent glass should be used. Reflective glass cannot be protected with mica discs, as this prevents reflection.

We will be happy to help you select the appropriate design.

You can find more information on this in the Help Center or in our INFO sheet.

INFO-Sheet: Reflex- and Transparent Glass – (1.01 MB)


More technical details about our tank sight glass type 330 can be found further down this page!

Technical details

Frame material:

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

Design:

  • suitable for sight glasses according to DIN 7081 or similar

Temperature:

  • up to 280 °C 2 with borosilicate glass
    according to DIN 7081 or similar
depending on glass and gasket

Sight glass:

  • Borosilicate glass DIN 7081 or similar
    (as reflex- and transparent version)
  • Borosilicate glass unhardened 

Nominal length:

  • 140 mm to 1000 mm

Options:

  • Mica protection
    (up to 320 °C with borosilicate glass, transparent acc. DIN 7081 or similar)
  • Vaccum design on request

Gaskets:

  • Fiber; (KLINGERSIL ® C-4400)
  • PTFE, FKM, NBR, Silicone, EPDM
  • Graphite; (Frenzelit novaphit®)
  • or according to customer requirements

Nominal pressure:

  • PN 16 / 40

Screws:

  • A4-70


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)

Sketch_and_Section_view_type_330
BL [mm] 140 170 220 250 300 310 350 370 400 500 600 620 700 740 800 930 1000
SL [mm] 79 124 174 204 264 264 304 324 354 454 564 654 694 754 884 954 564
Consealed view
[mm]
0 0 0 0 0 0 0 0 0 1×46 1×36 1×46 1×46 1×46 1×46 1×46 1×46
h1/h2
(PN 16) [mm]
20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
Weight
(PN 16) [kg]
2,8 3,2 4 4,6 5,3 5,6 6,3 6,6 7,1 9,1 10,7 11,1 12,5 13,2 14,2 16,7 18,2
h1/h2
(PN 40) [mm]
25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25
Weight
(PN 40) [kg]
3,4 4 5 5,7 6,6 6,9 7,8 8,2 8,8 11,3 13,3 13,8 15,6 16,4 17,7 20,8 22,6


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Type 330 - Rectangular Tank sight glass
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