Circular tank sight glass type 390 - PN 16 to PN 320

Name: Type 390 -Circular Sight Glass Fittings
Brand: ACI Industriearmaturen GmbH
Rating: 5 (31 reviews)

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

Tank sight glass 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

For vacuum applications ² (Type 390V)

with thread connection (Type 392)

with pipe connection (Type 391)

PLEXIGLAS® - impact protection

Stainless-steel perforated plate - impact protection

FEP protective screen (for higher pH-values)

Mica protection (up to 320 °C with borosilicate glass DIN 7080)

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)

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	6,4
	80	200	83	88,9	3,2	9,9
	100	220	107	114,3	3,6	9,7
	125	270	132	139,7	4	19,1
	150	300	160	168,3	4,5	24,9
	200 (max. 10 bar(g))	375	207	219,1	6,3	46,4
	250 (max. 6 bar(g))	425	259	273	7,1	51,6
	300 (max. 6 bar(g))	485	308	323,9	8	69,1
	350 (max. 6 bar(g))	555	339	355,6	8	105,2
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	4,5
	50	165	54	60,3	2,9	6,0
	65	185	70	76,1	2,9	8,0
	80	200	83	88,9	3,2	10,2
	100	235	107	114,3	3,6	13,9
	125	270	132	139,7	4	19,9
	150	300	160	168,3	4,5	25,8
	200	375	207	219,1	6,3	49,4
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	8,7
	50	180	54	60,3	2,9	9,6
	65	205	70	76,1	3,2	12,2
	80	215	82	88,9	3,6	14,3
	100	250	106	114,3	4	20,3
	125	295	131	139,7	4,5	31,8
	150	345	157	168,3	5,6	46,8
100	15	105	17	21,3	2	2,5
	20	130	22	26,9	2,6	4,4
	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	8,7
	50	195	54	60,3	3,2	12,5
	65	220	69	76,1	3,6	16,7
	80	230	81	88,9	4	19,1
	100	265	104	114,3	5	28,4
	125	315	127	139,7	6,3	45,0
160	15	105	17	21,3	2	2,5
	25	140	28	33,7	2,9	5,5
	40	170	41	48,3	3,6	9,4
	50	195	52	60,3	4	13,5
	65	230	60	76,1	8	26,4
	80	255	79	101,6	6,3	34,8
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	14,0
	50	200	48	60,3	6,3	17,8
	65	230	60	76,1	8	26,5
320	15	130	15	21,3	3,2	5,3
	25	160	24	33,7	5	10,6
	40	198	36	48,3	6,3	17,6
	50	210	48	63,5	8	22,2

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Circular tank sight glass type 390 - PN 16 to PN 320

Tank sight glass type 390

Technical details

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