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Between-flange version for flanges according to DIN EN 1092-1
Tubular sight glass for operating pressures up to max. 40 barg
Non binding • Usually a response within 24 hours
Glass-ring tubular sight glass for operating pressures up to 40 barg with 360° all-round view
The glass-ring tubular sight glass type 671 is a particularly robust version of our tubular sight glasses.
Type 671 is designed for operating pressures up to 40 barg and can be easily installed between flanges according to DIN EN 1092-1. Thanks to its compact design, the sight glass is ideal for retrofitting into existing systems – even in confined spaces.
Even at larger nominal sizes, operating pressures of 20 barg can be achieved with type 671.
The standard design with Borosilicate glass is suitable for operating temperatures up to 280 °C.
The sealing of the fitting is carried out with flat gaskets tailored to your needs, made from an extensive range of materials. In addition to the common fibre gaskets it also offers more sophisticated materials, such as PTFE (Teflon®), NBR, novaphit® MST-XP, KlingerSil® C4400 and many other branded gaskets.
| Dimensions & Pressure notes | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 |
| Di [mm] | 18 | 23 | 29 | 38 | 44 | 55 | 71 | 83 | 108 | 132 |
| DF [mm] | 45 | 58 | 68 | 78 | 88 | 102 | 122 | 138 | 162 | 188 |
| L [mm] | 134 | 134 | 134 | 144 | 144 | 146 | 148 | 148 | 158 | 174 |
| Weight [kg] | 3 | 3,5 | 4 | 6 | 7 | 9 | 11 | 13 | 15 | 19 |
| PS³ [barg] | 40 | 40 | 40 | 30 | 25 | 25 | 25 | 25 | 25 | 20 |
| Outside diameter, bolt circle and holes according to DIN 1092-1 | ||||||||||
