Stainless steel spare glass is designed to monitor liquid in the pipeline or tank. The glass is made of borosillic glass and is resistant to temperature and partial strokes. Stainless steel spare glass DIN is made of AISI 304 or AISI 316 metal. These stainless steel fittings may be used in the production of milk, meat, vegetables, drinks and other foods.
Measurements of spare glass DIN:
| DN | D1 | D2 | L1 | L2 |
| 10 | 10 | 15 | 88 | 60 |
| 15 | 16 | 21 | 88 | 60 |
| 20 | 20 | 25 | 88 | 60 |
| 25 | 26 | 31 | 98 | 70 |
| 32 | 32 | 37 | 104 | 70 |
| 40 | 38 | 43 | 112 | 70 |
| 50 | 50 | 55 | 112 | 70 |
| 65 | 66 | 72 | 127 | 85 |
| 80 | 81 | 87 | 135 | 85 |
| 100 | 100 | 106 | 169 | 115 |
| 125 | 125 | 132 | 202 | 160 |
| 150 | 150 | 157 | 216 | 170 |
