{TAIL ~ A limiter} 1 in which the obturator control flap of the hydraulic valve is associated with the first pivoting arm through a linkage capable of transmitting a rotary movement of {HEAD ~ the axle} of said flap, the hydraulic valve being distant from the pivoting arm control assembly 
{ TAIL ~ A limiter } 1 in which the obturator control flap of the hydraulic valve is associated with the first pivoting arm through a linkage capable of transmitting a rotary movement of { HEAD ~ the axle } of said flap , the hydraulic valve being distant from the pivoting arm control assembly
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