ATOS Servo Valve Model-E-RI-TE-01H 41/DH04SA #OH08. Atos servo valve receives pressurized hydraulic fluid from a source, typically a hydraulic pump. It then transfers the fluid to a hydraulic cylinder in a closely controlled manner. Typically, the valve will move the spool proportionally to an electrical signal that it receives, indirectly controlling the flow rate. The best deals for ATOS Proportional Hydraulic Valve E-RI-TE-01H 40 / DK14SC DLKZOR-TE-140-L71 41