UP10-31A-0-N-80-30/M138 CARTRIDGE

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Hydraforce directly.***
The Hydraforce 5621401.M138 (5621401.M138) is a screw-in, cartridge-style remote sequence pilot unloading valve designed for use in accumulator-type hydraulic systems. Known as the UP10-31, this valve offers optional fixed unload/reload pressure ratios of 60%, 70%, or 80%. In its steady state, the UP10-31 blocks flow from port 2 to port 3. When a predetermined pressure is reached at port 1, the spool shifts to permit flow from port 2 to port 3. The spring chamber is vented at port 3, meaning that any back pressure here will directly affect the valve setting on a 1:1 basis. If the pressure at port 1 decreases below the established reload value ratio, the valve closes and blocks flow from port 2 to port 3 again. This model features adjustments that cannot be backed out of the valve and prevents springs from going solid. It also offers optional spring ranges up to 207 bar (3000 psi) and includes hardened spool and cage components for extended durability. The UP10-31 is designed in an industry-common size for versatile application across various hydraulic systems requiring precise control over flow sequences and unloading operations.