Aluminosilicate Transparent Gauge Glass

Description

Aluminosilicate Transparent Gauge Glass DIN 7081 is also named Ai-Si gauge glass and Plain Gauge Glass.Its typical characteristic is two-sided polished and tempered and made from specific glass material types-commonly Aluminosilicate which results in products characterized by high mechanical strength and high resistance to alkalis, acids and condensates.

Aluminosilicate gauge glass is usually used wherever pressure loads occur at temperatures above 300°C, up to 375°C. Aluminosilicate gauge glass has higher temperature resistance than borosilicate glass, which is used to replace the extreme environment that borosilicate gauge glass is not competent for. Due to different production difficulties, the price of aluminosilicate gauge glass is obvious higher than borosilicate Level Gauge Glass.
The aluminosilicate Level Gauge Glass is usually used with mica shield to avoid fluid corrosion and maximize the working pressure and temperature.

Main Data
Mica protected level gauge glasses Working Pressure 100 bar at 375 °C.
Tensile Bending Strength ≥ 240 N/mm2
Compressive Prestress ≥  90 N/mm2
Max. Service Temperature 375°C.
Transmittance 92%

Size and Dimentions

Type A
No	L	B	S	Roman No	Size	Part No
1	115	30	17	I	115X30X17	OVFA01
2	140	30	17	II	140X30X17	OVFA02
3	165	30	17	III	165X30X17	OVFA03
4	190	30	17	IV	190X30X17	OVFA04
5	220	30	17	V	220X30X17	OVFA05
6	250	30	17	VI	250X30X17	OVFA06
7	280	30	17	VII	280X30X17	OVFA07
8	320	30	17	VIII	320X30X17	OVFA08
9	340	30	17	IX	340X30X17	OVFA09
10	370	30	17	X	370X30X17	OVFA10
11	400	30	17	XI	400X30X17	OVFA11
Type B
No	L	B	S*	Roman No	Size	Part No
1	115	34	17	I	115X34X17	OVFB01
2	140	34	17	II	140X34X17	OVFB02
3	165	34	17	III	165X34X17	OVFB03
4	190	34	17	IV	190X34X17	OVFB04
5	220	34	17	V	220X34X17	OVFB05
6	250	34	17	VI	250X34X17	OVFB06
7	280	34	17	VII	280X34X17	OVFB07
8	320	34	17	VIII	320X34X17	OVFB08
9	340	34	17	IX	340X34X17	OVFB09
10	370	34	17	X	370X34X17	OVFB10
11	400	34	17	XI	400X34X17	OVFB11
Type X
No	L	B	S	Roman No	Size	Part No
1	80	24	17	-	80X24X17	OVFX00
2	80	24	20.7	-	80X24X20.7	OVFX01
3	80	24	21	-	80X24X21	OVFX02
4	106	22	21	-	106X22X21	OVFX03
5	108	24	20.7	-	108X24X20.7	OVFX04
6	108	24	21	-	108X24X21	OVFX05
7	108	24	21.5	-	108X24X21.5	OVFX06
8	118	24	21	-	118X24X21	OVFX07
9	130	24	21	-	130X24X21	OVFX08
10	130	26	19	-	130X26X19	OVFX09

*All size unit in mm