Leakage control of the moving O-ring seal
Further information please refer to the datasheet in PDF format.
For maxiumum product safety LIAG® free flow shutter valves are available with a leakage monitoring system of the only dynamic O-ring. This specific design identifies possibile wearing defects of the seal and prevents any contamination from the outside environment.
The special designed leakage chamber can act as a steam barrier or offer monitoring via means of a level conductor control (dilution of glycerine).
The pivoting axle is supported with a ball-bearing shaft for increased stability and less required operating torque compared with the standard shutter valve.
Nominal sizes: | |
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Inch | DIN |
1.5" | DN40 |
2" | DN50 |
2.5" | DN65 |
3" | DN80 |
4" | DN100 |
Surfaces: | |
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In contact with product: | Ra ≤ 32µin (Ra ≤ 0.8) |
Materials: | |
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Inox parts in contact with product: | AISI 316L (1.4404 / 1.4435) |
Other inox parts: | AISI 304 (1.4301) |
O-ring seals: | EPDM, FKM (Viton®)‚ FEP, other grades upon request |
Temperature: | |
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Operating temperature: | 230°F (110°C) |
Short-term: | 284°F (140°C) - optionally up to 392°F (200°C) |
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