This paper reviews the state of the art of directly driven proportional directional hydraulic
spool valves, which are widely used hydraulic components in the industrial and …

Hydraulic control valves are widely used in industrial production, agricultural equipment,
construction machinery, and other large power equipment for controlling the pressure and …

The main objective of this article is to analyse the flow characteristics of a proportional flow
control valve and to improve its characteristics by means of geometrical modifications of the …

Compared with the oil hydraulic systems, cavitation is more serious in water hydraulic
systems due to the higher saturated vapor pressure of water. Poppet valve is one of …

The main objective of this article is to analyse flow coefficient of a proportional directional
valve with integrated spool position controller. The valve geometry has been modified by …

Recharge mileage is of great importance for a hydrogen fuel cell electric vehicle. High
pressure hydrogen storage can increase the recharge mileage significantly. Before …

The existing flow control valves (FCV) generally have problems with low flow control
accuracy, high-pressure loss, and difficult flow fine-tuning. Therefore, this paper proposes a …

The main objective of this article was to analyse flow forces acting on a spool of a
proportional control valve in the initial phase of the spool gap opening. Accordingly …

Superheated steam (SHS) is widely used in various integrated energy systems. Multi-stage
continuous-resistance perforated sleeves and n-stage adjustable-resistance perforated …

In this paper, a novel design of a rotary hydraulic flow control valve has been presented for
high flow rate fluid power systems. High flow rates in these systems account for substantial …