What is a pilot check valve?
A pilot check valve, also known as a pilot-operated relief valve, helps to regulate the internal pressures inside a closed system by rerouting excess flow pressures as needed.DefinitionExperitec describes a pilot check valve as a mechanical assembly that senses pressure changes and uses a pilot valve to alter the flow pressure on the main release valve.PartsA pilot check valve system consists of two valves: the pilot valve and the main release valve. These two parts work together to regulate hydraulic or gas pressure inside the valve.OperationA pilot check valve leaves its pilot valve closed during lower internal pressures. When the pressure reaches a predetermined level, the pilot valve opens, rerouting the flow to take pressure off the main relief valve.ReversalWhen the internal pressure drops below the predetermined level, the pilot valve closes to direct the full flow to the main relief valve.Advantages and DisadvantagesA pilot check valve performs with more precision than other ty
