One way to reduce exposure to dangerous noise levels, is to replace a pneumatic pump with an E-Flo DC (Dual Control) electric circulating pump. Hear the difference for yourself.
Excessive noise from pneumatic pumps can be expense. For more about how electric pumps can reduce noise levels in your manufacturing plant, read this article: https://www.graco.com/us/en/in-plant-manufacturing/solutions/articles/excessive-noise-can-be-expensive.html