Sight glass type 330 rectangular
Longitudinal sight glass for level indication 16 /40 bar
Sight glass type 330 rectangular - 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.
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.
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.
More technical details about our tank sight glass type 330 can be found further down this page!
Technical details
Frame material:
| Design:
| Temperature:
2 Depending on glass and gasket |
Sight glass:
| Total length:
| Options:
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Gaskets:
| Nominal pressure:
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Screws:
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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) | ||
| 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 | 574 | 654 | 694 | 754 | 884 | 954 |
| Consealed view [mm] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1×46 | 1×36 | 1×46 | 1×46 | 1×46 | 1×46 | 2×46 | 3×46 |
| 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 |
