Abstract
This paper proposes a new construction of the relief valve with pilot G-π bridge hydraulic resistances network. The valve's static characteristics are studied theoretically. The formulas for designing the relief valve with zero static pressure override are obtained. The static performances of the relief valve are experimentally investigated. The theoretical and experimental results show that the relief valve developed in this paper is un-sensitive to flow rate, i.e.when the overflow increases the control pressure is kept constant.
