1CLLR50-F-25-S-XXX

The 1CLLR50-F-25-S-XXX relief valve is produced by Vickers for the Relief Valves series. It is installed in hydraulic circuits to limit system pressure and protect components during automation tasks. The valve operates in direct acting mode, allowing immediate response to pressure rise. The factory set pressure is fixed at 162.5 bar so the unit begins to open near this threshold. Normal service conditions range down to a minimum working pressure of 75 bar and up to a maximum working pressure of 250 bar, providing a wide adjustment window. Two valve ports simplify inline mounting and control return flow paths.

The valve passes flow rates up to 50 L/min, making it suitable for medium-capacity circuits. Internal leakage is limited to 0.25 cc per minute so energy loss and heat generation remain low. A recommended fluid cleanliness level of ISO 18/16/13 helps prevent wear on the precision poppet surfaces. A Buna-N seal package resists common petroleum-based hydraulic fluids and maintains tight closure under varying temperatures. These parameters support consistent pressure control in automated machinery that relies on compact, reliable relief elements.