UP10-31H-0-N-80-30/M135 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 5621441.M135 (5621441.M135) is a screw-in, cartridge-style remote sequence pilot unloading valve designed for use in accumulator-type hydraulic systems. This model, known as the UP10-31, offers optional fixed unload/reload pressure ratios of 60%, 70%, or 80%. In its normal state, the valve blocks flow from port 2 to port 3. When a predetermined pressure is reached at port 1, the spool shifts to permit flow between these ports. The valve's design includes a vented spring chamber at port 3, meaning any back pressure will directly affect the valve setting on a one-to-one basis. If the pressure at port 1 decreases below the established reload value ratio, the valve will close again, blocking flow from port 2 to port 3. Notably, adjustments to this valve cannot be backed out and are designed to prevent springs from reaching a solid state. The UP10-31 can accommodate optional spring ranges up to 207 bar (3000 psi), and it features a hardened spool and cage for enhanced durability. Additionally, it boasts an industry-common size for easy integration into existing systems.