This unit is a direct acting, screw in cartridge style, spool type, hydraulic directional logic element, with multi-functional potential when used with other directional pressure or flow control devices.

This valve blocks flow from port 1 to port 2 with a spring bias. It will shift to allow full flow from port 1 to port 2 only when there is no pressure in port 3. Valve will close when port 3 is blocked and will maintain the same pressure plus the bias spring force value. When no pressure is present at port 3, it will allow flow from port 1 to port 2 once the bias spring force is overcome by the pressure in port 1. This is vent to open logic element.

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.