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Aluminum / crystal-clear plastic Prismatic oil level sight glasses |
GN 744 |
| d1 | d2 | d3 | l1 | l2 | s | ||
| 14 | G 1/2 | M 20 x 1,5 | 26 | 8,5 | 7,5 | 23 | |
| 18 | G 3/4 | M 26 x 1,5 | M 27 x 1,5 | 32 | 9 | 8 | 30 |
| 24 | G 1 | M 33 x 1,5 | 40 | 11 | 8,5 | 36 | |
| Specification | Information | How to order |
| Aluminum matt shot-blasted
Sight glass Temperature resistant up to 100 °C
resistant to solvents,
Seal synthetic rubber |
Prismatic oil level sight glasses GN 744 use the so called prismatic effect of a cat's eye to display the oil level unaffected by oil colour or oil viscosity. The advantage of this effect is particularly obvious in the case of under or overfilling or for inspection under unfavourable light conditions. The seal is housed in a radial groove in the aluminium body and hence cannot be lost. In addition it cannot be extruded when thigtening the sight glass. For this reason the seal can be of a relatively soft material which increases ist sealing capacity even on uneven surface. Oil level sight glasses GN 744 can also be used on pressurised tanks. Data of pressure an vacuum pressure tests is available.
Oil level sight glasses (aluminum / normal glass) |
Oil level sight glass GN 744-24-G1
Code No. 744 |
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