Abstract
The fluidborne noise generated by hydraulic pumps is transmitted via the fluid to remote parts of the circuit where it can cause the problems such as airborne noise. The effective way to overcome this problem is to use hydraulic silenser. Coupled airchambers in the circuit are a good hydraulic silenser. But the effect of this silenser depends deeply upon the pressure reflection coefficient of the circuit. Although none of useful engineering data has been published on the pressure reflection in hydraulic circuit. In this paper the practical value of reflection coefficient of hydraulic circuit is considered and the experimental results of gate valve's reflection coefficient are given.
