The position indicator is applicable to submerged valves forming part of
hydraulic systems for the transfer of liquids or gas, based on that the
corresponding signal which is obtained as a consequence of the state or
position (open or closed) of the valve is transmitted by hydraulic
pressure, from a long distance and transformed into an analog or digital
signal which can be viewed on a display screen. The position of the valve
(2) is set by the position of an actuator shaft (3') to which are secured
cams (11) so that the rotation of the shaft causes the cams (11) to act on
hydraulic cartridges (12), thereby regulating the position of said
cartridges, and as a consequence, regulating the pressure of a secondary
hydraulic system to provide said pressure signal which can be converted to
any type of reliable indication, corresponding to the real position of the
valve (2).
