HIGH PERFORMANCE VANE PUMP VT6BB INTERNAL LEAKAGE (TYPICAL) NOISE LEVEL (TYPICAL) Do not operate pump more than 5 seconds at any speed or viscosity if internal leakage is more than 50 of theoretical flow. Total leakage is the sum of each section loss at its operating Double pump noise level is given with each section discharging at the pressure noted on the curve. HYDROMECHANICAL POWER LOSS (TYPICAL) PERMISSIBLE RADIAL LOAD Total hydromechanical power loss is the sum of each section at its operating conditions. Maximum permissible axial load Fa = 800N (180 lbs)