Sight glass fittings for use in unpressurized vessels

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For:

observation of interior of tanks, silos, stirred vessels etc.

Operating conditions:

no pressure

Operating temperature:

150°C with soda lime glass to DIN8902
280°C with borosilicate glass to DIN7080

Zulassungen:

TÜV-vorgeprüft

Certification/Standard:

inspection certificate EN10204-3.1B

Assembly:

After welding the base flange in the vessel wall, gaskets, sightglass disc and blank flange are laid and bolted together.
Tighten progressively on a diametric cross basis.

Item	Material options
Base flange (welding flange)	1.4571
Seals	Klingersil C-4400, Silicon, PTEF or other
Sight glass disc	Borosilicate glass DIN7080 up to 280°C
Sight glass disc	Soda-lime glass DIN8902 up to 150°C
Cover flange	1.4571 or other
Securing bolts	A2-70

Size		1	2	3	4		5	6
Nominal bore	DN	50	80	100	125		150	200
Viewing diameter	d1	80	100	125	150		175	225
Sight glass disc	s	10	10	10	10		10	10
Flanges	D	140	165	190	215	240		290
	k	120	145	170	195	220		270
	h1	10	10	10	10	10		10
	h2	15	15	15	15	15		15
Securing bolts	Anz.	4	8	8	8		8	8
Securing bolts	Gew.	M6	M6	M6	M6		M6	M6
Gaskets product and viewing side	d1	80	100	125	177		202	252
Gaskets product and viewing side	d2	102	127	152	177		202	252

Requirements for ordering:

Mounting
Nominal bore

Material:     loose flange          (certificate EN10204 3.1B on request)
                cover flange         (certificate EN10204 3.1B on request)
                 bolts

sight glass disc

seals

Sight glass fittings for use in unpressurized vessels

Item