From Steam Locomotives to modern Aircraft Carriers Leslie has specialized in solving sever service valve problems. 

Leslie's new Aeroflow Control Valve represents the newest technology in valve design.  The Aeroflow can provide the user with a truly zero leakage valve operating at very high pressures and temperatures.

K-Max Rotary Control Valves

Efficient straight-through flow design allows for a much lower cost per Cv than conventional globe style valves with the same degree of quality people have come to expect from Leslie.