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 Schott Duran®
Redline Gage Glass - Redline Glass Code 7740. Borosilicate tubular gage glass has a red line between two white lines which, in the presence of a colorless liquid, magnifies the red line. The bold red line makes it easier to read the liquid level. Redline tubular gage glass is widely used in tanks, reservoirs and low pressure boiler applications.
Note: Each piece of Duran® tubular gage glass of standard length and in case quantities has the following identification imprinted on the glass.
12 Pieces per Standard Case.
1/2" O.D.
+0, -1/32"
5/64" Wall
±1/64 | 8 | 390 | 300 | | | 10 | 370 | 295 | For price and | | 12 | 360 | 295 | packaging | | 14 | 345 | 290 | information | | 16 | 335 | 285 | click here | | 18 | 325 | 280 | | | 20 | 310 | 280 | | | 24* | 280 | 270 | | | 30 | 250 | NOT RECOMMENDED | | | 36* | 250 | NOT RECOMMENDED | | | 48* | 175 | NOT RECOMMENDED | | | 60 | 135 | NOT RECOMMENDED | | | 72 (Max) | 100 | NOT RECOMMENDED | | | | 5/8" O.D.
+0, -1/32"
3/32" Wall
±1/64" | 8 | 370 | 285 | | | 10* | 345 | 280 | | | 12* | 335 | 280 | | | 14* | 325 | 275 | | | 16* | 315 | 265 | | | 18* | 305 | 265 | | | 20 | 290 | 265 | | | 24* | 265 | 255 | | | 30* | 235 | NOT RECOMMENDED | | | 36* | 205 | NOT RECOMMENDED | | | 48* | 165 | NOT RECOMMENDED | | | 60 | 125 | NOT RECOMMENDED | | | 72 (Max) | 90 | NOT RECOMMENDED | | | | 3/4" O.D.
+0, -1/32" 7/64" Wall
±1/64" | 8 | 390 | 280 | | | 10* | 340 | 275 | | | 12* | 330 | 275 | | | 14* | 320 | 270 | | | 16* | 310 | 265 | | | 18* | 300 | 260 | | | 20 | 285 | 260 | | | 22 | 270 | 250 | | | 24* | 260 | 250 | | | 30 | 230 | NOT RECOMMENDED | | | 36* | 200 | NOT RECOMMENDED | | | 48* | 160 | NOT RECOMMENDED | | | 60 | 125 | NOT RECOMMENDED | | | 72 (Max) | 90 | NOT RECOMMENDED | | | |
7/8" O.D.
+0, -1/32"
1/8" Wall
±1/32"
| 30 | 240 | NOT RECOMMENDED | | | 36 | 225 | NOT RECOMMENDED | | | 48 | 185 | NOT RECOMMENDED | | | 72 (Max) | 100 | NOT RECOMMENDED | | | | 1" O.D.
+0, -1/32"
1/8" Wall
±1/32" | 24 | 230 | NOT RECOMMENDED | | | 30 | 210 | NOT RECOMMENDED | | | 36 | 195 | NOT RECOMMENDED | | | 48 | 160 | NOT RECOMMENDED | | | 60 | 125 | NOT RECOMMENDED | | | 72 (Max) | 90 | NOT RECOMMENDED | |
 *Note: * Indicates standard factory stocked lengths. All items are packaged (12) pieces per case when ordered in standard stock factory lengths unless otherwise indicated, or ordered cut to length or ordered in less than case quantities.
IMPORTANT NOTE: For further information on proper operation and maintenance, always follow guidelines set by the manufacturer of the gage. Regardless of glass pressure and temperature ratings shown above, never exceed the manufacturer's pressure and temperature limitations for your gage. Contact us for a price quote or to discuss your application.
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