The Evolution
| The first functional prototype in plaster The first prototype from the original idea by Jan Inge Eielsen - the Founder |
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| The first operative prototype The first prototype tested in airflow environments, with counterweight included. |
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| Prototype tested in Gaz de France In Gas de France laboratories in Alfortville - the 63mm prototype was fully verified in gas environment. |
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| Prototype for protection of Turbine Runaway situation It was made and tested for Hydropower for 20 Bar pressure regime - 150mm diameter. |
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| The first 32mm prototype made in aluminium Tested in air environment and low pressure |
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| The fully operational 32mm Excess Flow protector for Gas certified in accordance to EN-1555 for excess flow. Optional with automatic bypass feature. May also be used for excess water flow situation. |  |
| The fully operational Service gas valve 32mm This is the unique combinational solution for both fully automatic excess flow and for manual operation in gas environment. |
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