Reflex + Transparent Level gauge glasses DIN 7081

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Information & specification of Level Gauge glass DIN7081

We supply reflex and transparent gauge glasses standard in tempered borosilicate glass according to DIN 7081 standard. The toughened safety glass is resistant to high pressure and high temperatures (max. 320° C, depending on the medium and any mica protection of the glass).

Maxos Reflex information Maxos Transparent information Contact us

Sizes available in

Length: from 95 to 500 mm (size B0 – B16)
Thickness: 17 or 21 mm (17 is standard, 21 = H)
Width: 30 or 34 mm (size A or B)

Size codes

A-size = 30 mm wide and 17 mm thick glass
B-size = 34 mm wide and 17 mm thick glass
H-size = 34 mm wide and 21 mm thick glass

We deliver standard gaskets for the above glasses from stock in Graphite or Blue Guard. Other materials on request.

Maxos reflex level gauge glass

Dumico Article	Maxos Article	Length	Width	Thickness	Type	Size	Design
MRB0953417	2071716	95	34	17	B	0	DIN 7081
MRA1153017	2071675	115	30	17	A	1	DIN 7081
MRB1153417	2071684	115	34	17	B	1	DIN 7081
MRA1403017	2071676	140	30	17	A	2	DIN 7081
MRB1403417	2071685	140	34	17	B	2	DIN 7081
MRA1653017	2071677	165	30	17	A	3	DIN 7081
MRB1653417	2071686	165	34	17	B	3	DIN 7081
MRA1903017	2071678	190	30	17	A	4	DIN 7081
MRB1903417	2071687	190	34	17	B	4	DIN 7081
MRA2203017	2071679	220	30	17	A	5	DIN 7081
MRB2203417	2071688	220	34	17	B	5	DIN 7081
MRH2203417	2071698	220	34	21	H	5	*
MRA2503017	2071680	250	30	17	A	6	*
MRB2503417	2071689	250	34	17	B	6	*
MRH2503417	2071699	250	34	21	H	6	*
MRA2803017	2071681	280	30	17	A	7	*
MRB2803417	2071690	280	34	17	B	7	*
MRH2803421	2071700	280	34	21	H	7	*
MRB3003417	2071713	300	34	17	B		*
MRA3203017	2071682	320	30	17	A	8	*
MRB3203417	2071691	320	34	17	B	8	*
MRH3203421	2071701	320	34	21	H	8	*
MRA3403017	2071683	340	30	17	A	9	*
MRB3403417	2071692	340	34	17	B	9	DIN 7081
MRH3403421	2071703	340	34	21	H	9	*
MRB3703417	2071693	370	34	17	B	10	DIN 7081
MRB4003417	2071694	400	34	17	B	11	DIN 7081
MRB4303417	2071695	430	34	17	B		*
MRH4303421	2071703	430	34	21	H		*
MRB4603417	2071696	460	34	17	B		*
MRH4303421	2071704	460	34	21	H		*
MRB5003417	2071697	500	34	17	B		*
MRH5003421	2071705	500	34	21	H		*

Maxos transparent level gauge glass

Dumico Article	Maxos Article	Length	Width	Thickness	Type	Size	Design
MTB0953417	2071817	95	34	17	B	0	*
MTT1132716	2071857	113	27,6	16,8	TA28	1	*
MTA11503017	2071768	115	30	17	A	1	*
MTB11503417	2071777	115	34	17	B	1	*
MTH11503421	2071794	115	34	21	H	1	*
MTA1403017	2071769	140	30	17	A	2	*
MTB1403417	2071778	140	34	17	B	2	*
MTH1403421	2071795	140	34	21	H	2	*
MTA1653017	2071770	165	30	17	A	3	*
MTB1653417	2071779	165	34	17	B	3	*
MTH1653421	2071796	165	34	21	H	3	*
MTA1903017	2071771	190	30	17	A	4	*
MTB1903417	2071780	190	34	17	B	4	*
MTH1903421	2071797	190	34	21	H	4	*
MTA2203017	2071772	220	30	17	A	5	*
MTB2203417	2071781	220	34	17	B	5	*
MTH2203421	2071798	220	34	21	H	5	*
MTA2503017	2071773	250	30	17	A	6	*
MTB2503417	2071782	250	34	17	B	6	*
MTH2503421	2071799	250	34	21	H	6	*
MTT2782716	2071862	278	27,6	16,8	TA28	7	*
MTA2803417	2071774	280	30	17	A	7	*
MTB2803417	2071783	280	34	17	B	7	*
MTH2803421	2071800	280	34	21	H	7	*
MTB3003417	2071784	300	34	17	B		*
MTT3182716	2071863	318	27,6	16,8	TA28	8	*
MTA3203017	2071775	320	30	17	A	8	DIN 7081
MTB3203417	2071785	320	34	17	B	8	DIN 7081
MTH3203421	2071801	320	34	21	H	8	*
MTT3382716	2071864	338	27,6	16,8	TA28	9	*
MTA3403017	2071776	340	30	17	A	9	DIN 7081
MTB3403417	2071786	340	34	17	B	9	DIN 7081
MTH3403421	2071802	340	34	21	H	9	*
MTB3703417	2071787	370	34	17	B	10	DIN 7081
MTH3703421	2071803	370	34	21	H		*
MTB4003417	2071788	400	34	17	B	11	DIN 7081
MTB4203417	2071789	420	34	17	B		*
MTH4203421	2071804	420	34	21	H		*
MTB4303417	2071790	430	34	17	B		*
MTB4603417	2071791	460	34	17	B		*
MTH4603421	2071805	460	34	21	H		*
MTB4803417	2071792	480	34	17	B		*
MTH5003417	2071793	500	34	17	B		*
MTH5003421	2071807	500	34	21	H		*

Transparent Glass size

L x B x H
113×27,6×16,8*
278×27,6×16,8*
318×27,6×16,8*
338×27,6×16,8*

The DIN 7081 standard describes the glass quality and dimensions of the level gauge glasses. The level gauge glasses marked with * are not DIN 7081 sizes, but they are produced according to DIN 7081 and thus meet the same high quality standards.

Technical properties:

Thermal shock resistance:		∆T 230°C
Max. temperature with micashield:		320°C
Max. temperature:		300°C
Application conditions:	Max. pressure:	Max. temperature:
Saturated steam or hot water in direct contact with reflex or transparent sight glasses	35 bar	243°C
Saturated steam or hot water in contact with transparent sight glasses protected with mica	103 bar	320°C
Non-corrosive, non-steam service and no technically significant glass attack, with reflex or transparent glasses	280 bar	38°C
Transparent sight glasses in contact with medias with no technically significant glass attack	345 bar	38°C
High pressure transparent sight glasses in special armatures (gauges)	414 bar	38°C
Bending strength standard level gauge glass	≥ 150N/mm²	(average 170N/mm²)
Bending strength high pressure level gauge glass	≥ 180N/mm²	(average 2000N/mm²)
Surface compressive stress standard level gauge glass	≥ 90N/mm²	(average 100N/mm²)
Surface compressive stress high pressure level gauge glass	≥ 100N/mm²	(average 110N/mm²)
Parallellism standard level gauge glass	≤ 0,08 mm
Parallellism high pressure level gauge glass	≤ 0,05 mm

Permissible load of a sight glass always depends on the specific operating conditions (pressure, temperature , type of medium and type of device).

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