Fluid Metering Inc.’s (FMI) valveless piston mosquito pumps are suited for ULV fluid control. Sapphire-hard internal ceramics and the elimination of valves found in conventional pump designs virtually eliminate routine maintenance and downtime while improving precision to 1%, according to FMI. Variable speed DC drives are integrated to control flow rate proportional to vehicle speed. Flow rates are adjustable up to 2,300 ml/min with 1% precision and pressures up to 100 psi.