But the concept (along with big radials in general) died with the arrival of the jet engine, and sleeve valves
never really caught on in motoring applications anyway.
In operation, the rotary sleeve valve
rotates within the valve body, literally wiping away trace residue and preventing the accumulation of soot and other substances.
The Inbal valve is much more resistant to severe surge pressures than any other deluge control valve on the market, including other rubber sleeve valves
. Pressures up to and exceeding 50bar (for a 6in valve) has routinely been mastered without any defects.
Working in a major hydraulic company some years ago I noticed a sudden increase in the output of the selectively assembled spool and sleeve valves
. I received a cold shoulder from my superior when I expressed my concern.