Leakage measurement at large ball valves
At the valve’s leakage lines
Up to 50 m/s
For outside use or in the workshop
VA Di or TA Di (for small flow velocities)
Flowtherm NT.2 or flowtherm EX
Gas pipelines allow transport of natural gas obtained from abroad to downstream distribution networks. They have a diameter of 1.4 meters and operate at about 100 bar. These pipelines have isolation valves to separate each segment from the other. The herefore used ball valves have to be checked yearly according to DVGW G 441. With these so called „block and bleed“ armatures possible leakages are measured in closed and in the open state through a separate outflow („bodyline“ or „block and bleed pipeline“).
The measurement’s result determines whether the ball valve can continue to be operated or if repair or replacement is required. That way leakage measurement determine a possibly necessary new investment. Measuring instruments must be accurate. Measurement happens „in the field“.
The instrument is suited for the robust use outside
Tried and tested
Numerous operators counted on Höntzsch instruments for this application
Höntzsch also offers a portable solution as an ex-version