The UP10-40X is a screw in, cartridge style, remote sequence, pilot unloading valve, with optional fixed unload/reload pressure ratios of 60%, 70%, or 80% for use in accumulator type hydraulic systems.
In its steady state, the UP10-40X blocks flow from port 2 to port 3. On attainment of a predetermined pressure at port 1, the spool shifts to allow flow from port 2 to port 3. The spring chamber is vented to port 4. If pressure at port 1 drops to a level below the ratio established reload value, the valve will close, blocking flow from port 2 to port 3.
- Adjustments cannot be backed out of the valve.
- Adjustments prohibit springs from going solid.
- Hardened precision spool and cage for long life.
- Industry-common size.