Valves series “EK” are produced ion the 3/2, 5/2 and 5/3 pneumatic functions; the kind of construction is based on a balanced spool. In the mechanically actuated version these valves are avaiable only for the sizes G1/8 and G1/4, while the manually actuated versions are avaiable in the different sizes and they are suitable for panel mounting ( except for size G1/2)