This unit is a direct acting, screw in cartridge style, hydraulic 3-way, 2 position unloading valve, which can be dumped or unloaded via a remote pilot signal. This valve is used as the pilot stage of a two-stage unloading valve.

This valve provides a fixed percentage between load and unload pressures. The fixed differential area is provided by the pilot spool which has a greater area than the pilot seat. When pressure at the pilot port 1 reaches the spring setting, the valve opens and unloads pressure port 2 to tank port 3. The greater area of the spool holds the pilot poppet off its seat until pressure at pilot port 1 drops to the ratio percentage of the spring setting, at which point the valve closes. This Valve to be used as pilot valve in hydraulic unloading valve applications.

WARNING – IMPROPER USE OR SELECTION OF THE PRODUCTS/EQUIPMENT OR SYSTEMS DESCRIBED CAN CAUSE PERSONAL INJURY, DEATH AND/OR PROPERTY DAMAGE. SAFETY PROCEDURES MUST BE APPLIED PRIOR TO INSTALLATION, COMMISIONING AND/OR OPERATION OF EQUIPMENT AND MACHINERY.