Type 390 -Circular Sight Glass Fittings | ACI Industriearmaturen GmbH

Circular Sight Glass Fitting Type 390

with welding ends according to DIN EN 1092-1 type 11

Sight Glass Fitting Type 390

Our round sight glass fittings type 390 are welded onto or into a vessel wall or pipeline to allow observation or illumination of the inside. Equipped with welding ends according to DIN EN 1092-1 type 11, the sightglass fittings type 390 are suitable for the most common pipelines. As with our other sightglasses, a sightglass made of chemically highly resistant borosilicate glass to DIN 7080 or similar is clamped between two high-quality stainless steel flanges and proven quality gaskets.


Exploded_view_type_390_with_labelling_of_the_individual_parts

Our type 390 sight glasses are made of the high-quality stainless steel 1.4571 (316Ti) that 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 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.

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

As with other of our sightglass fittings, our Type 390 can be optionally equipped with SGW type wipers or lights. 

More technical details about our sightglass fitting type 390 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:

  • with welding ends according to
    DIN EN 1092-1 type 11

Temperature:

  • up to 280 °C with borosilicate glass
    according or similar to DIN 7080

Sight glass:

  • Borosilicate glass DIN 7080 or similar

Nominal size:

  • DN 15 up to DN 350

Options:

  • Wiper SGW with PTFE or silicone wiper blade
  • LED lights for EX- and Non-EX-areas
  • PLEXIGLAS® - impact protection
  • Stainless-steel perforated plate - impact protection
  • FEP protective screen (for higher pH-values)
  • special desgins are possible
² depending on environmental variables

Gaskets:

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

Nominal pressure:

  • PN 16 up to PN 350

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)

Section_view_type_390
PN DN Da [mm] Di [mm] A [mm] s [mm] Weight [kg]
16 15 95 17 21,3 2 1,6
20 105 22 26,9 2,3 2,3
25 115 28 33,7 2,6 2,7
32 140 37 42,4 2,6 4,0
40 150 43 48,3 2,6 4,5
50 165 54 60,3 2,9 5,3
65 185 70 76,1 2,9 6,5
80 200 83 88,9 3,2 8,3
100 220 107 114,3 3,6 9,7
125 250 132 139,7 4 13,4
150 285 160 168,3 4,5 17,0
200 (max. 10 bar(g)) 340 207 219,1 6,3 25,1
250 (max. 6 bar(g)) 405 260 273 6,3 37,0
300 (max. 6 bar(g)) 460 310 323,9 7,1 49,4
350 (max. 6 bar(g)) 520 340 355,6 8 70,2
40 15 95 17 21,3 2 1,6
20 105 22 26,9 2,3 2,3
25 115 28 33,7 2,6 2,7
32 140 37 42,4 2,6 4,0
40 150 43 48,3 2,6 4,6
50 165 54 60,3 2,9 6,1
65 185 70 76,1 2,9 8,0
80 200 83 88,9 3,2 10,1
100 235 107 114,3 3,6 14,0
125 270 132 139,7 4 19,9
150 300 160 168,3 4,5 25,9
200 375 207 219,1 6,3 49,5
63 15 105 17 21,3 2 2,5
20 130 22 26,9 2,6 4,3
25 140 28 33,7 2,6 5,5
32 155 37 42,4 2,9 6,8
40 170 43 48,3 2,9 8,8
50 180 54 60,3 2,9 9,7
65 205 70 76,1 3,2 12,2
80 215 82 88,9 3,6 14,4
100 250 106 114,3 4 20,4
125 295 131 139,7 4,5 31,9
150 345 157 168,3 5,6 47,2
100 15 105 17 21,3 2 2,6
20 130 22 26,9 2,6 4,4
25 140 28 33,7 2,6 5,6
32 155 37 42,4 2,9 6,9
40 170 43 48,3 2,9 8,8
50 195 54 60,3 3,2 12,5
65 220 69 76,1 3,6 16,8
80 230 81 88,9 4 19,2
100 265 104 114,3 5 28,6
125 315 127 139,7 6,3 45,4
160 15 105 17 21,3 2 2,6
25 140 28 33,7 2,9 5,6
40 170 41 48,3 3,6 9,5
50 195 52 60,3 4 13,6
65 220 66 76,1 5 19,2
80 230 76 88,9 6,3 22,5
250 15 130 16 21,3 2,6 5,3
25 150 27 33,7 3,6 7,6
40 185 38 48,3 5 14,1
50 200 48 60,3 6,3 17,8
65 230 60 76,1 8 26,8
320 15 130 15 21,3 3,2 5,3
25 160 24 33,7 5 10,7
40 198 36 48,3 6,3 17,7
50 210 48 63,5 8 22,3


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Type 390 -Circular Sight Glass Fittings
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