How does a pilot-operated valve function?

A pilot-operated valve functions by utilizing a smaller valve, often referred to as the pilot valve, to control the larger main valve. This design allows the pilot valve to manage the flow of air or fluid that activates the main valve. The pilot valve is sensitive and requires relatively low pressure to operate, which means that it can effectively control a larger volume or higher pressure of air or fluid in the main valve without needing significant force or energy.

This mechanism is very efficient as it allows for precise control of larger systems while minimizing the required input power. The pilot operation enables automation in various pneumatic tools and systems, where precise and responsive operation is necessary without the need for direct human intervention on the larger valve. By controlling a substantial actuation with a smaller impulse, pilot-operated valves centralize control, improve safety, and enhance system efficiency.