Abstract

The paper is concerned with experiments and simulations of the static characteristics of the valve which is a force balance type pneumatic pressure control proportional valve with a nozzle flapper mechanism. It is recognized that the input-output characteristics of the valve has excellent linearity and the characteristics of output pressure versus nozzle flapper clearance look like those of a relay. The effects of the valve parameters on the valve pressure-load flow characteristics are discussed here also. According to the results of the simulations, it is confirmed that the fluid force influencing on the supply valve should be considered.

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