The ACI Tank Sight Glass Type 390 is a round sight glass with welding ends according to DIN EN 1092 for welded installation on open pipes or tank walls.
The sight glass window is an industrially proven and highly resistant MAXOS® borosilicate safety sight glass according to DIN 7080 for operating temperatures up to 280°C. on the connection side, Type 390 is equipped with a welding end matching the dimensions defined in DIN EN 1092-1, allowing it to be welded onto most open pipe ends without additional preparation.
Base and cover flanges are available in steel and stainless steel alloys for pressure equipment, like P265GH, 1.4571 or 1.4404. Special high performance materials like Hastelloy or duplex steel are available on request.
The borosilicate glass disc is sealed using high quality gasket materials like KlingerSIL C4400 aramid fibre gaskets or Frenzelit novaphit MST for elevated temperatures. Soft, rubber-like materials like silicone, NBR or EPDM are also available preinstalled in your sight glass fitting. For highly corrosive chemicals we recommend pure or modified PTFE, Garlock Gylon or a wide range of special gasket materials.
The sight glass Type 390 is also available with preinstalled cleaning equipment like wipers or spray nozzles. On request, we prepare the device with threaded mounting holes for lighting with halogen or LED light sources.
For more technical details and detailed information about our round vessel sight glass type 390, please read below.
base and cover flanges:
1.0460 / 1.4301 / 1.4306 (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)
Sight glass with welding end DIN EN 1092
PN16 / PN25 / PN40 / PN63 / PN100 / PN160
PTFE / FKM / NBR / C4400 / Silicone /
EPDM / Graphite (novaphit MST)
- or as desired
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
With quartz glass for temperatures up to 1000 ° C (depending on the material combination)
Optional versions are possible.