Tested for 3000 cycles in a closed-loop system - more than 8 operations per day over one year, without a failure!

Slurry with 10% Solids, Highly erosive foundry sand: 0.15-0.6 mm, or 6 -24 thousands of an inch Fluid velocity: 3.6 m/s (from 60 m3/h ), or 12 ft/s (from 264 gpm)

Krombach®KFO 9136 MSBV has successfully passed the sand slurry test, 3000-cycles at 6 bar.

Krombach®KFO 9136 continued to perform at class V seat leak after the 3000 cycles. Torque stayed stable throughout the test up to 3000 cycles. In general, the valve was not damaged, and all soft seals were in good condition.

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Removable layer of dirt on surface

Key observations:

The tested valve presented some indication of corrosion (rust) – however, this did not impact our valve’s performance

The ball and seat ring showed no scratches – positively a good result!