Precisely and harmonic operation with good stability. Available in 4 different sizes for flow ranges from 10 - 480 l/min. With pilot ratio from 1:1 to 10:1 and for nominal pressures up to 420 bar. Each size available in open, semirestricted and fully restricted version. The program contains also versions with spring chamber vented to a drain line or to the atmosphere.
Modestly priced versions with stainless steel outer parts for off shore applications available.