Overcenter Valves - Eaton

Eaton Screw-In Cartridge Valves E-VLSC-MC001-E December Eaton Brand NBA231 Overcenter ValvesArticle of InterestThere are now many types of Overcenter or motion control Valves available to the design-er of hydraulically operated machines, each one has its own place and specific ben-efits to the user. The function of these Valves can be divided into three basic Load Holding; where the Overcenter valve prevents the movement of a load when the directional valve is in the neutral position. Permitting the use of open center directional Valves and negating leakage past the spool of closed center direc-tional Load Control; where the Overcenter valve prevents the actuator running ahead of the pump due to the load induced energy thereby eliminating cavitation in the actuator and loss of Load Safety.

N-12.A EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 An Eaton Brand N Overcenter Valves Article of Interest Graph 1 shows the pressure drop curves of two valves

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