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Over- Under Pressure Valve
We are able to deliver the right solution for PRv’s in every situation! For most situations, our two standard types of PRv’s will be a perfect fit. For other situations, we also have very good alternatives to meet your requirements! The biogas that is being produced inside your tank, has a certain pressure, measured in mBar. In standard situations, we take a pressure into account between -1,0 and +5,0 mBar. Our pressure valves make sure that the gas pressure inside your tank does not exceed the maximum pressure limit. Our PRv’s also have a very narrow flange connection (150 or 200 mm), which gives you the benefit of mounting the PRv’s higher on your tank, so you can fill up your tank with slurry even higher!
Technical specifications and differences Over-/underpressure Valves:
| PRV 450 | PRV 950 | |
|---|---|---|
| mBar | Min -1 / Max +5 | Min -2 / Max +10 |
| Max. gas flow | 450m³/h | 950m³/h |
| Flange Connection | DN150 | DN200 |
| Should be filled with | Water / glycol | Water / Glycol |
| Chimney | 1 meter | 1 meter |
| On request even higher |

Over- Under Pressure Valve components
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Glycol filling
A Glycol filling for the 5 & 10 mbar over- underpressure fuse to prevent freezing in the winter.
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OUPV 5 mbar
A 5 mbar over- underpressure fuse including the mounting set.
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OUPV 10 mbar
A 10 mbar over- underpressure fuse including the mounting set.
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Wall bushing | 5
A wall outlet for the 5 mbar over- underpressure fuse.
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Wall bushing | 10
A wall outlet for the 10 mbar over- underpressure fuse.





