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Pressure Ratings for Sight Glasses |
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| Conditions of testing: 20-25° C, standard hydraulic oil with viscosity of 68, relative humidity 50%, slow increase of pressure. |
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EN 541 Series
| Diameter |
Bar |
PSI |
| 9 |
25 |
363 |
| 11 |
25 |
363 |
| 14 |
20 |
290 |
| 18 |
17 |
245 |
| 19 |
17 |
245 |
| 20 |
17 |
245 |
| 22 |
17 |
245 |
| 25 |
17 |
245 |
| 30 |
7 |
102 |
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GN 743, GN 743.1, GN 743.6,
GN 743.7 and GN 743.8,
Series
| Diameter |
Bar |
PSI |
| 11 |
50 |
725 |
| 14 |
50 |
725 |
| 18 |
25 |
363 |
| 24 |
20 |
290 |
| 32 |
12 |
174 |
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GN 744 Series
| Diameter |
Bar |
PSI |
| 14 |
15 |
218 |
| 18 |
15 |
218 |
| 24 |
3.5 |
51 |
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