Comparative Study on the Performances of the One-Way Hydraulic Valves

Abstract

The purpose of use of the one-way valves is to achieve control actuations or pressure equalizing in different types of circuits. The basic design solutions for these valves include ball check valves, spring valves or reed valves. In order to assure the highest response time of a valve, considering the oil contamination and the degradation of some physical and chemical properties of the hydraulic fluid, some requirements must be respected regarding changes in flow sections, fillets, surface roughness, fluid velocity and response time. Considering the above restrictions, the paper presents several technical solutions used for configuring one-way valves, as well as a deep CFD study of some commonly used one-way valves. The proposed simulations are based on common commercial designs, investigated by experimental procedures.