Key Parameters Item Specification / Description Valve Type Over‑centre / counterbalance cartridge valve with pilot‑assisted relief + check Installation Type Screw‑in cartridge (cartridge only — requires compatible cavity / housing) Rated Flow 30 L/min (≈ 8 US gpm) (nominal flow capacity) Maximum Relief / Working Pressure 350 bar (≈ 5000 psi) Maximum Load Induced Pressure (load holding without pilot) ~ 270 bar (≈ 3915 psi) — typical load‑holding limit Pilot Ratio 5:1 (pilot pressure to load pressure ratio for valve actuation) Seal Material Nitrile / Buna‑N (standard) Fluid Compatibility Common hydraulic fluids: e.g. MIL‑H‑5606, SAE 10, SAE 20, etc. Leakage (internal when closed) ~ 0.25 cc/min (nominal) Operating Temperature Range (fluid / ambient) –30 °C to +90 °C (–22 °F to 194 °F) (typical for valve when fluid viscosity and density within spec) Port / Cavity / Mounting Cartridge only (requires compatible cavity such as A6610) Functionality Load-holding: free‑flow from actuator to pump or tank via check when returning; when load needs to be moved, pilot pressure applied to open relief and meter flow to actuator. Provides hose‑failure/over‑run protection, stable load control.