— The S U T X sequence valves are used for
pressure control. They are direct-acting and
— They are available in two nominal sizes for flows up
to 150 l/min and in four pressure adjustment
— Opening takes place by means of a pilot pressure
that, acting on a small piston, resists the force of
the adjustment spring.
— The valve can be easily modified to get any one of
the four versions S, U, T, X, turning the upper and
the bottom covers in order to obtain the X and Y
internal connections, as indicated in par. 7.
The figure represents the section of a type S valve.