Solenoid controlled valve

An electro-hydraulic braking system comprising a source of pressurized fluid, a reservoir, at least one brake actuator, and a solenoid-controlled valve assembly, said valve assembly including a body defining a bore, at least a first flow passage and a second flow passage defined in said body, each said passage connecting at one end with said bore, a spool working in said bore in said body, movement of said spool within said bore connecting and disconnecting said first and second flow passages, a solenoid comprising a coil fixed relative to said body, an armature, wherein application of a current to said coil causes said armature to apply a force in a first direction to said spool, a biasing means arranged to apply a resisting force to said spool in a second direction opposing said force applied by said armature, a ball being arranged to sit within a recess of said spool, and a disc having opposing first and second ends, the second end having a flat face, said disc disposed between said biasing means and said ball, such that the first end of said disc engages said biasing means, and the flat face of the second end of said disc engages said ball such that said disc and said ball define a single point of contact.