Overview

• An integral check valve prevents return flow from the accumulator through the unloading valve
• In an accumulator system, the valve cuts out automatically when the accumulator pressure reaches adjusted maximum
• At cut-in pressure (approximately 85% of adjusted maximum), the valve directs delivery to the accumulator and the hydraulic system automatically
• In a double pump system, the valve automatically sequences the pumps to deliver a large volume of oil at low pressure and a small volume of oil at high pressure
• Models designated “URT” have threaded ports and require a separate check valve to function as an unloading circuit