Disc sight glass DIN 7080

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Information & specification of Sight glass DIN7080

We supply round sight glasses standard in tempered borosilicate glass according to the DIN 7080 standard. The toughened safety glass withstands high pressures and high temperatures up to 280° C, if protected with mica up to 300° C and if used with non aggressive media up to 430° C.

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Available sizes

Below is an overview of all Maxos sight glasses with a diameter between Ø 30 mm and Ø 265 mm and thicknesses from 7 mm to 30 mm.

On request we deliver other sizes and materials (for example Quartz glass and metal fused sight glass) for high pressure, temperature and / or optical demands for measurements (light transmittance spectrum etc.). Please check the Technical glass page for these items.

Maxos sight glasses sizes

Dumico Article	Maxos Article	Diameter Ø	Thickness	Sight Ø	Pressure	Design
MKG02410	2071640	24	10	14	150 bar	*
MKG03012	2071622	30	12	16,6	150 bar	*
MKG03015	2071553	30	15	16,6	200 bar	*
MKG03112	2071598	31,6	12,75	20	150 bar	*
MKG03314	2071557	33	14	20	150 bar	*
MKG03417	2071638	34	17	24	200 bar	*
MKG03507	2071552	35	7	25	25 bar	*
MKG04010	2071624	40	10	30	40 bar	*
MKG04012	2071555	40	12	30	50 bar	*
MKG04410	2071603	44	10	32	40 bar	*
MKG04412	2071564	44	12	32	50 bar	*
MKG04510	2071554	45	10	32	40 bar	DIN 7080
MKG04512	2071556	45	12	32	50 bar	DIN 7080
MKG05010	2071558	50	10	35	25 bar	DIN 7080
MKG05012	2071561	50	12	35	40 bar	DIN 7080
MKG05506	2071626	55	6,5	40	6 bar	*
MKG05510	2071559	55	10	40	25 bar	*
MKG06010	2071560	60	10	45	16 bar	DIN 7080
MKG06012	2071562	60	12	45	25 bar	DIN 7080
MKG06015	2071563	60	15	45	40 bar	DIN 7080
MKG06020	2071604	60	20	45	95 bar	*
MKG06308	2071565	63	8	48	8 bar	*
MKG06310	2071566	63	10	48	16 bar	DIN 7080
MKG06312	2071567	63	12	48	25 bar	DIN 7080
MKG06315	2071569	63	15	48	40 bar	DIN 7080
MKG06510	2071629	65	10	50	12 bar	*
MKG06515	2071606	65	15	50	40 bar	*
MKG07012	2071568	70	12	55	16 bar	*
MKG07015	2071570	70	15	55	25 bar	*
MKG07512	2071607	75	12	60	16 bar	*
MKG08010	2071571	80	10	65	10 bar	*
MKG08012	2071573	80	12	65	16 bar	DIN 7080
MKG08015	2071575	80	15	65	25 bar	DIN 7080
MKG08020	2071576	80	20	65	40 bar	DIN 7080
MKG08612	2071610	86	12	71	10 bar	*
MKG09010	2071572	90	10	70	8 bar	*
MKG09210	2071625	92	10	72	8 bar	*
MKG09412	2071671	94	12	79	10 bar	*
MKG09510	2071649	95	10	75	6 bar	*
MKG09515	2071574	95	15	75	16 bar	*
MKG10010	2071577	100	10	80	7 bar	*
MKG10012	2071642	100	12	80	10 bar	*
MKG10015	2071578	100	15	80	16 bar	DIN 7080
MKG10020	2071579	100	20	80	25 bar	DIN 7080
MKG10025	2071580	100	25	80	40 bar	DIN 7080
MKG10515	2071662	105	15	80	16 bar	*
MKG11012	2071674	110	12,5	85	10 bar	*
MKG11020	2071613	110	20	90	25 bar	*
MKG11315	2071672	113	15	88	10 bar	*
MKG11515	2071612	115	15	90	10 bar	*
MKG12010	2071611	120	10	100	4 bar	*
MKG12015	2071630	120	15	100	10 bar	*
MKG12018	2071663	120	18	100	16 bar	*
MKG12515	2071581	125	15	100	10 bar	DIN 7080
MKG12520	2071582	125	20	100	16 bar	DIN 7080
MKG12525	2071583	125	25	100	25 bar	DIN 7080
MKG12530	2071584	125	30	100	40 bar	*
MKG13015	2071643	130	15	105	10 bar	*
MKG13515	2071615	135	15	110	8 bar	*
MKG13525	2071644	135	25	110	25 bar	DIN 7080
MKG14015	2071666	140	15	115	8 bar	*
MKG15010	2071664	150	10	125	2 bar	*
MKG15015	2071585	150	15	125	8 bar	*
MKG15020	2071586	150	20	125	10 bar	DIN 7080
MKG15025	2071587	150	25	125	16 bar	DIN 7080
MKG15030	2071588	150	30	125	25 bar	DIN 7080
MKG16020	2071617	160	20	135	12 bar	*
MKG17015	2071645	170	15	145	5 bar	*
MKG17020	2071670	170	20	145	8 bar	*
MKG17520	2071589	175	20	150	10 bar	DIN 7080
MKG17525	2071590	175	25	150	16 bar	DIN 7080
MKG17530	2071591	175	30	150	25 bar	DIN 7080
MKG20020	2071592	200	20	175	8 bar	DIN 7080
MKG20025	2071593	200	25	175	10 bar	DIN 7080
MKG20030	2071594	200	30	175	16 bar	DIN 7080
MKG21025	2071621	210	25	185	10 bar	*
MKG25020	2071673	250	20	225	4 bar	*
MKG25025	2071595	250	25	225	8 bar	DIN 7080
MKG25030	2071596	250	30	225	10 bar	DIN 7080
MKG26530	2071628	265	30	240	8 bar	DIN 7080

The DIN 7080 standard describes the glass quality and dimensions of the round sight glasses. The round sight glasses marked with * are not DIN 7080 sizes, but they are produced according to DIN 7080 and thus meet the same high quality standards.

Glass thickness calculation

Dimensional tolerances DIN 7080

Diameter:	Up to Ø 125 mm Above Ø 125 up to Ø 200 mm Above Ø 200 mm	± 0,5 mm ± 0,8 mm ± 1,0 mm
Thickness:	Up to 20 mm Above 20 mm	+ 0,5 / – 0,25 mm + 0,8 / – 0,40 mm

Technical characteristics

Thermal shock resistance:	∆T 265 K
Max. temperature:	280°C *
Max. temperature with micashield	300°C
Max. temperature with steam:	243°C
Max. temperature with steam and micashield:	300°C
Max. temperature with non-aggressive media:	430°C
Minimum temperature:	Limitless
Bending strengt:	≥ 160N/mm²
Surface compressive stress:	≥ 100-140 N/mm²
Parallelism:	Up to Ø 100 mm Above Ø 100 up to Ø 150 mm Above Ø 200 mm	≤ 0,20 mm ≤ 0,25 mm ≤ 0,30 mm
Flatness:	Up to Ø 100 mm Above Ø 100 up to Ø 150 mm Above Ø 150 up to Ø 200 mm Above Ø 200 mm	≤ 0,05 mm ≤ 0,08 mm ≤ 0,12 mm ≤ 0,15 mm

⃰ ) When operating temperature exceeds 280° C, a permanent drop in the prestress is to be expected if no suitable measures are taken. The actual maximum permissible load on a sight glass always depends on the specific service conditions in question (pressure, temperature, nature of medium, type of armature).

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