HYDRAFORCE
5621820

***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 5621820 (5621820) is a screw-in, cartridge-style, internally piloted, pilot unloading valve designed for use in accumulator-type hydraulic systems. This model, known as the UPCV10-F41, features an internal check valve and a fixed reload pressure ratio of 80%. In its steady state, the valve blocks flow from port 3 to port 4 while allowing flow from port 1 to port 2. When a predetermined pressure is reached at ports 2 and 3, the spool shifts to permit free flow from port 3 to port 4, effectively unloading the pilot at port 3. If the pressure at port 2 decreases below the established reload value ratio, the valve closes and blocks flow from port 3 to port 4. The spring chamber of this valve is vented to port 4. Key features include an internal check valve and optional fixed reload pressure ratios. The hardened precision spool and cage ensure long life and reliability in demanding applications. Additionally, users have a choice of seal options to suit various operational requirements.