Round manhole inspection sight glass - Type 325

Name: Type 325 Manhole inspection sight glass
Brand: ACI Industriearmaturen GmbH
Rating: 5 (31 reviews)

for openings acc. to DIN 1092-1 PN 6 | PN 10 | PN 16

Manhole tank sight glass Type 325

ACI manhole sight glasses type 325 can be used to close manhole and inspection openings on tanks, silos and vessels. In contrast to common manhole closures, the type 325 is equipped with a sight glass mount similar to DIN 28120. This allows safe observation of the processes inside the tank.

Exploded_view_type_325_with_labelling_of_the_individual_parts

Our sight glasses type 325 are made of the high-quality stainless steel 1.4571 (316Ti), which our customers have appreciated for years. The glass material used is the industry-proven borosilicate glass 3.3 in accordance or similar to DIN 7080. Should process conditions pose a problem even for the highly resistant borosilicate glass, an FEP or mica protective screen specially adapted for the fitting provides additional protection against steam and aggressive chemicals, such as alkalis, up to a pH value of 14.

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 (Teflon®), NBR, graphite (e.g. Frenzelit novaphit®) and many other branded gaskets are available for special applications.

On request and after technical verification, the manhole sight glass type 325 can be equipped with cleaning devices such as wipers SGW and spraying devices or with lights to illuminate the interior.

More technical details about our manhole sight glass type 325 can be found further down this page!

Technical data

Flange material:

Base flange:
1.4571 (factory standard)

Cover flange:
1.4571 (factory standard)

Other materials on request ¹

Shape:

for flange connection
acc. to DIN EN 1092-1

Temperature:

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

up to 150 °C with soda-lime glass
according to DIN 8902 or similar

Sight glass:

Boroslicate glass
according to DIN 7080 or similar

Soda-lime glass
according to DIN 8902 or similar

Borosilcate glass untempered

Nominal size:

DN 300 to DN 800

Options:

Wiper SGW with PTFE or silicone wiper blade

LED lights for EX- and Non-EX-areas

Spray device SVI

O-ring-gasket (for vacuum applications) ²

FEP protective screen (for higher pH-values

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

Double glazing

PLEXIGLAS® / Grid impact protection

Special designs on request

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 6 | 10 | 16

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)

DN		300	350	400	450	500	600	700	800
Di [mm]		175	225	280	280	325	325	325	325
H [mm]	PN 6	23	25	28	31	33	37	42	47
	PN 10	29	34	38	40	44	49	57	63
	PN 16	36	45	50	54	60	68	71	79
Weight [kg]	PN 6	30	40	52	68	92	135	193	273
	PN 10	38	58	75	92	128	187	279	394
	PN 16	49	80	104	134	189	290	354	497
Da / K	According to DIN EN 1092-1 PN 6 / PN 10 / PN 16