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A hydraulic servovalve including a valve body, a spool bore in the valve body, a spool in the spool bore, inlet and outlet conduits in the valve body, control conduits in the valve body, annular grooves on the spool for providing fluid flow paths between the inlet and outlet conduits and the control

A hydraulic servovalve including a valve body, a spool bore in the valve body, a spool in the spool bore, inlet and outlet conduits in the valve body, control conduits in the valve body, annular grooves on the spool for providing fluid flow paths between the inlet and outlet conduits and the control conduits, bores extending through the spool for providing additional fluid flow paths in addition to the fluid flow paths through the annular grooves, an inclined base on the valve body, a torque motor mounted on the inclined base, a flapper bore extending through the valve body transversely to the inclined base and lying in line with a diameter of the spool bore, a flapper in the flapper bore, and a filter bore in the valve body located laterally of the spool bore.

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A servovalve comprising a valve body, a spool bore in said valve body, a spool in said spool bore, a fluid inlet conduit in said valve body in communication with said spool bore, a fluid outlet conduit in said valve body in communication with said spool bore, first and second control conduits in sai

A servovalve comprising a valve body, a spool bore in said valve body, a spool in said spool bore, a fluid inlet conduit in said valve body in communication with said spool bore, a fluid outlet conduit in said valve body in communication with said spool bore, first and second control conduits in said valve body in communication with said spool bore, first and second blind bores in said valve body in communication with said spool bore, first and second land means on said spool proximate said first and second control conduits, respectively, first groove means in said spool adjacent said first land means, second groove means in said spool adjacent said second land means, a first bore in said spool extending through said first land means for providing a fluid path between said first control conduit and said first blind bore, a second bore in said spool extending through said second land means for providing a fluid path between said second control conduit and said second blind bore, said first groove means effecting communication between said fluid inlet conduit and said first control conduit while said second groove means effect communication between said fluid outlet conduit and said second control conduit and while said first bore effects communication between said fluid inlet conduit and said first control conduit and while said second bore effects communication between said fluid outlet conduit and said second control conduit in response to a first position of said spool, said second groove means and said second bore effecting communication between said fluid inlet conduit and said second control conduit while said first groove means and said first bore effect communication between said fluid outlet conduit and said first control conduit in response to a second position of said spool, said first and second bores having first ends proximate the first and second control conduits, respectively, and having second end proximate said first and second blind bores, respectively, and third and fourth annular groove means in said first and second land means, respectively, for effecting communication between said first and second ends of each of said first and second bores, respectively.