SERVOVALVE

A servovalve is provided comprising a fluid transfer valve assembly (5) comprising a primary fluid supply port (14) and a control port (15), a moveable valve spool (4) arranged to regulate flow of fluid through a first fluid pathway from the primary fluid supply port (14) to the control port (15), and a jet pipe assembly configured to axially move the spool (4) relative to the fluid transfer valve assembly (5) in response to a control signal to regulate the fluid flow along the first fluid pathway. The jet pipe assembly comprises a steerable nozzle (19') from which fluid is directed to the ends (4a, 4b) of the spool in an amount determined by the control signal. The spool comprises an opening (28') and an interior passage (50) fluidly coupling the opening to the jet pipe assembly via a second fluid pathway. The first fluid pathway is fluidly isolated from the second fluid pathway within the spool.